BIG INSURANCE 2023: Revenues reached $1.39 trillion thanks to taxpayer-funded Medicaid and Medicare Advantage businesses

The Affordable Care Act turned 14 on March 23. It has done a lot of good for a lot of people, but big changes in the law are urgently needed to address some very big misses and consequences I don’t believe most proponents of the law intended or expected. 

At the top of the list of needed reforms: restraining the power and influence of the rapidly growing corporations that are siphoning more and more money from federal and state governments – and our personal bank accounts – to enrich their executives and shareholders.

I was among many advocates who supported the ACA’s passage, despite the law’s ultimate shortcomings. It broadened access to health insurance, both through government subsidies to help people pay their premiums and by banning prevalent industry practices that had made it impossible for millions of American families to buy coverage at any price. It’s important to remember that before the ACA, insurers routinely refused to sell policies to a third or more applicants because of a long list of “preexisting conditions” – from acne and heart disease to simply being overweight – and frequently rescinded coverage when policyholders were diagnosed with cancer and other diseases.

While insurance company executives were publicly critical of the law, they quickly took advantage of loopholes (many of which their lobbyists created) that would allow them to reap windfall profits in the years ahead – and they have, as you’ll see below. 

Among other things, the ACA made it unlawful for most of us to remain uninsured (although Congress later repealed the penalty for doing so). But, notably, it did not create a “public option” to compete with private insurers, which many advocates and public policy experts contended would be essential to rein in the cost of health insurance. Many other reform advocates insisted – and still do – that improving and expanding the traditional Medicare program to cover all Americans would be more cost-effective and fair

I wrote and spoke frequently as an industry whistleblower about what I thought Congress should know and do, perhaps most memorably in an interview with Bill Moyers. During my Congressional testimony in the months leading up to the final passage of the bill in 2010, I told lawmakers that if they passed it without a public option and acquiesced to industry demands, they might as well call it “The Health Insurance Industry Profit Protection and Enhancement Act.”

A health plan similar to Medicare that could have been a more affordable option for many of us almost happened, but at the last minute, the Senate was forced to strip the public option out of the bill at the insistence of Sen. Joe Lieberman (I-Connecticut), who died on March 27, 2024. The Senate did not have a single vote to spare as the final debate on the bill was approaching, and insurance industry lobbyists knew they could kill the public option if they could get just one of the bill’s supporters to oppose it. So they turned to Lieberman, a former Democrat who was Vice President Al Gore’s running mate in 2000 and who continued to caucus with Democrats. It worked. Lieberman wouldn’t even allow a vote on the bill if it created a public option. Among Lieberman’s constituents and campaign funders were insurance company executives who lived in or around Hartford, the insurance capital of the world. Lieberman would go on to be the founding chair of a political group called No Labels, which is trying to find someone to run as a third-party presidential candidate this year.

The work of Big Insurance and its army of lobbyists paid off as insurers had hoped. The demise of the public option was a driving force behind the record profits – and CEO pay – that we see in the industry today.

The good effects of the ACA:

Nearly 49 million U.S. residents (or 16%) were uninsured in 2010. The law has helped bring that down to 25.4 million, or 8.3% (although a large and growing number of Americans are now “functionally uninsured” because of unaffordable out-of-pocket requirements, which President Biden pledged to address in his recent State of the Union speech). 

The ACA also made it illegal for insurers to refuse to sell coverage to people with preexisting conditions, which even included birth defects, or charge anyone more for their coverage based on their health status; it expanded Medicaid (in all but 10 states that still refuse to cover more low-income individuals and families); it allowed young people to stay on their families’ policies until they turn 26; and it required insurers to spend at least 80% of our premiums on the health care goods and services our doctors say we need (a well-intended provision of the law that insurers have figured out how to game).

The not-so-good effects of the ACA: 

As taxpayers and health care consumers, we have paid a high price in many ways as health insurance companies have transformed themselves into massive money-making machines with tentacles reaching deep into health care delivery and taxpayers’ pockets. 

To make policies affordable in the individual market, for example, the government agreed to subsidize premiums for the vast majority of people seeking coverage there, meaning billions of new dollars started flowing to private insurance companies. (It also allowed insurers to charge older Americans three times as much as they charge younger people for the same coverage.) Even more tax dollars have been sent to insurers as part of the Medicaid expansion. That’s because private insurers over the years have persuaded most states to turn their Medicaid programs over to them to administer.

Insurers have bulked up incredibly quickly since the ACA was enacted through consolidation, vertical integration, and aggressive expansion into publicly financed programs – Medicare and Medicaid in particular – and the pharmacy benefit spacePremiums and out-of-pocket requirements, meanwhile, have soared.

We invite you to take a look at how the ascendency of health insurers over the past several years has made a few shareholders and executives much richer while the rest of us struggle despite – and in some cases because of – the Affordable Care Act.

BY THE NUMBERS

In 2010, we as a nation spent $2.6 trillion on health care. This year we will spend almost twice as much – an estimated $4.9 trillion, much of it out of our own pockets even with insurance. 

In 2010, the average cost of a family health insurance policy through an employer was $13,710. Last year, the average was nearly $24,000, a 75% increase.

The ACA, to its credit, set an annual maximum on how much those of us with insurance have to pay before our coverage kicks in, but, at the insurance industry’s insistence, it goes up every year. When that limit went into effect in 2014, it was $12,700 for a family. This year, it has increased by 48%, to $18,900. That means insurers can get away with paying fewer claims than they once did, and many families have to empty their bank accounts when a family member gets sick or injured. Most people don’t reach that limit, but even a few hundred dollars is more than many families have on hand to cover deductibles and other out-of-pocket requirements. Now 100 million Americans – nearly one of every three of us – are mired in medical debt, even though almost 92% of us are presumably “covered.” The coverage just isn’t as adequate as it used to be or needs to be.

Meanwhile, insurance companies had a gangbuster 2023. The seven big for-profit U.S. health insurers’ revenues reached $1.39 trillion, and profits totaled a whopping $70.7 billion last year.

SWEEPING CHANGE, CONSOLIDATION–AND HUGE PROFITS FOR INVESTORS

Insurance company shareholders and executives have become much wealthier as the stock prices of the seven big for-profit corporations that control the health insurance market have skyrocketed.

NOTE: The Dow Jones Industrial Average is listed on this chart as a reference because it is a leading stock market index that tracks 30 of the largest publicly traded companies in the United States.

REVENUES collected by those seven companies have more than tripled (up 346%), increasing by more than $1 trillion in just the past ten years.

PROFITS (earnings from operations) have more than doubled (up 211%), increasing by more than $48 billion.

The CEOs of these companies are among the highest paid in the country. In 2022, the most recent year the companies have reported executive compensation, they collectively made $136.5 million.

U.S. HEALTH PLAN ENROLLMENT

Enrollment in the companies’ health plans is a mix of “commercial” policies they sell to individuals and families and that they manage for “plan sponsors” – primarily employers and unions – and government/enrollee-financed plans (Medicare, Medicaid, Tricare for military personnel and their dependents and the Federal Employee Health Benefits program).

Enrollment in their commercial plans grew by just 7.65% over the 10 years and declined significantly at UnitedHealth, CVS/Aetna and Humana. Centene and Molina picked up commercial enrollees through their participation in several ACA (Obamacare) markets in which most enrollees qualify for federal premium subsidies paid directly to insurers.

While not growing substantially, commercial plans remain very profitable because insurers charge considerably more in premiums now than a decade ago.

(1) The 2013 total for CVS/Aetna was reported by Aetna before its 2018 acquisition by CVS. (2) Humana announced last year it is exiting the commercial health insurance business. (3) Enrollment in the ACA’s marketplace plans account for all of Molina’s commercial business.

By contrast, enrollment in the government-financed Medicaid and Medicare Advantage programs has increased 197% and 167%, respectively, over the past 10 years.

(1) The 2013 total for CVS/Aetna was reported by Aetna before its 2018 acquisition by CVS.

Of the 65.9 million people eligible for Medicare at the beginning of 2024, 33 million, slightly more than half, enrolled in a private Medicare Advantage plan operated by either a nonprofit or for-profit health insurer, but, increasingly, three of the big for-profits grabbed most new enrollees. 

Of the 1.7 million new Medicare Advantage enrollees this year, 86% were captured by UnitedHealth, Humana and Aetna. 

Those three companies are the leaders in the Medicare Advantage business among the for-profit companies, and, according to the health care consulting firm Chartis, are taking over the program “at breakneck speed.”

(1) The 2013 total for CVS/Aetna was reported by Aetna before its 2018 acquisition by CVS. (2,3) Centene’s and Molina’s totals include Medicare Supplement; they do not break out enrollment in the two Medicare categories separately.

It is worth noting that although four companies saw growth in their Medicare Supplement enrollment over the decade, enrollment in Medicare Supplement policies has been declining in more recent years as insurers have attracted more seniors and disabled people into their Medicare Advantage plans.

OTHER FEDERAL PROGRAMS

In addition to the above categories, Humana and Centene have significant enrollment in Tricare, the government-financed program for the military. Humana reported 6 million military enrollees in 2023, up from 3.1 million in 2013. Centene reported 2.8 million in 2023. It did not report any military enrollment in 2013.

Elevance reported having 1.6 million enrollees in the Federal Employees Health Benefits Program in 2023, up from 1.5 million in 2013. That total is included in the commercial enrollment category above. 

PBMs

As with Medicare Advantage, three of the big seven insurers control the lion’s share of the pharmacy benefit market (and two of them, UnitedHealth and CVS/Aetna, are also among the top three in signing up new Medicare Advantage enrollees, as noted above). CVS/Aetna’s Caremark, Cigna’s Express Scripts and UnitedHealth’s Optum Rx PBMs now control 80% of the market.

At Cigna, Express Scripts’ pharmacy operations now contribute more than 70% to the company’s total revenues. Caremark’s pharmacy operations contribute 33% to CVS/Aetna’s total revenues, and Optum Rx contributes 31% to UnitedHealth’s total revenues. 

WHAT TO DO AND WHERE TO START

The official name of the ACA is the Patient Protection and Affordable Care Act. The law did indeed implement many important patient protections, and it made coverage more affordable for many Americans.

But there is much more Congress and regulators must do to close the loopholes and dismantle the barriers erected by big insurers that enable them to pad their bottom lines and reward shareholders while making health care increasingly unaffordable and inaccessible for many of us.

Several bipartisan bills have been introduced in Congress to change how big insurers do business. They include curbing insurers’ use of prior authorization, which often leads to denials and delays of care; requiring PBMs to be more “transparent” in how they do business and banning practices many PBMs use to boost profits, including spread pricing, which contributes to windfall profits; and overhauling the Medicare Advantage program by instituting a broad array of consumer and patient protections and eliminating the massive overpayments to insurers. 

And as noted above, President Biden has asked Congress to broaden the recently enacted $2,000-a-year cap on prescription drugs to apply to people with private insurance, not just Medicare beneficiaries. That one policy change could save an untold number of lives and help keep millions of families out of medical debt. (A coalition of more than 70 organizations and businesses, which I lead, supports that, although we’re also calling on Congress to reduce the current overall annual out-of-pocket maximum to no more than $5,000.) 

I encourage you to tell your members of Congress and the Biden administration that you support these reforms as well as improving, strengthening and expanding traditional Medicare. You can be certain the insurance industry and its allies are trying to keep any reforms that might shrink profit margins from becoming law. 

The Medicare Advantage Trap

In 46 states, once you choose Medicare Advantage at 65, you can almost never leave.

Medicare was founded in 1965 to end the crisis of medical care being denied to senior citizens in America, but private insurers have been able to progressively expand their presence in Medicare.

One of the biggest selling points of Obamacare was that it would finally end discrimination against patients on the basis of pre-existing conditions.

But for one vulnerable sector of the population, that discrimination never ended. Insurers are still able to deny coverage to some Americans with pre-existing conditions. And it’s all perfectly legal.

Sixty-five million seniors are in Medicare open enrollment from October 15 until December 7. Nearly 32 million of those patients are enrolled in Medicare Advantage, a set of privately run plans that have come under fire for denying treatment and overbilling the government.

Medicare Advantage patients theoretically have the option to return to traditional Medicare. But in 46 states, it is nearly impossible for those people to do so without exposing themselves to great financial risk.

Traditional Medicare has no out-of-pocket cap and covers 80 percent of medical expenses. Unlike Medicare Advantage plans, in traditional Medicare, seniors can choose whatever provider they want, and coverage limitations are far less stringent. Consequently, there’s a huge upside to going with traditional Medicare, and the downside is mitigated by the purchase of a Medigap plan, which covers the other 20 percent that Medicare doesn’t pay.

While this coverage is more expensive than most Medicare Advantage plans, nearly everybody in their old age would like to be able to choose their doctor and their hospitals, and everybody would want the security of knowing that they won’t be denied critical treatments. In 46 states, however, Medigap plans are allowed to engage in what’s called underwriting, or medical health screening, after seniors have already chosen a Medicare Advantage plan at age 65.

Only four states—New York, Connecticut, Maine, and Massachusetts—prevent Medigap underwriting for Medicare Advantage patients trying to switch back to traditional Medicare. The millions of Americans not living in those states are trapped in Medicare Advantage, because Medigap plans are legally able to deny them insurance coverage.

Medicare Advantage little resembles Medicare as it was traditionally intended, with tight networks and exorbitant costs that threaten to bankrupt the Medicare trust fund. (A recent estimate from Physicians for a National Health Program found that the program costs Medicare $140 billion annually.)

Jenn Coffey, a former EMT in New Hampshire who has been a vocal critic of her Medicare Advantage insurers’ attempts to deny her needed care, told the Prospect that she would jump back to traditional Medicare in a second. But because she became eligible prior to turning 65 due to a disability, she never had the option to pursue traditional Medicare with a Medigap plan. Instead, she pays premiums for a Medicare Advantage plan that nearly mirror what the cost of Medigap would be. But New Hampshire, like most other states, allows Medigap plans to reject her.

“I tried to find out if I could switch to traditional Medicare,” said Coffey. “When I talked to an insurance broker they said that I could. I made an appointment with an insurance agent, who then started looking at my pre-existing conditions, and they said, ‘We’re never going to get somebody to underwrite you.’”

Coffey was stunned by the agent’s words. “I honestly thought that we were completely done with pre-existing conditions” as a determinant for insurance coverage, she said. “Medigap plans are the only place where they are allowed to discriminate against us.”

Medicare Advantage now covers a majority of Medicare participants, thanks to extremely aggressive marketing and perks for healthier seniors like gym memberships.

In the 46 states that lack protections for people with pre-existing conditions, “lots of people don’t know that they may not be able to buy a Medigap plan if they go back to traditional Medicare from Medicare Advantage,” said Tricia Neuman, a senior vice president at KFF who has studied this particular issue.

Technically speaking, they can still go back to traditional Medicare if they don’t like their Medicare Advantage options, Neuman explained. But without access to a Medigap plan, they would be on the hook for 20 percent of their medical costs, which is unaffordable for most seniors.

Neuman told the Prospect about “cases where people have serious medical problems, and wanted to see a specialist,” but were blocked by their Medicare Advantage plan. Those same people had no ability to switch to traditional Medicare with a Medigap plan at precisely the time they need it the most, in nearly every state in the U.S.

“Medigap wasn’t a part of the ACA discussion on pre-existing conditions,” Neuman added. “A lot of people have no idea about this restriction on Medicare coverage, until they find themselves in a position that they want to go back and then it could be too late.”

Academic research shows that seniors often seek to return to traditional Medicare when they become sick.

The critical component that both Medigap and Medicare Advantage plans offer, which traditional Medicare does not, is out-of-pocket caps, said Cristina Boccuti, a director at the West Health Policy Center. “People who want to leave their Medicare Advantage plan, maybe because they are experiencing problems in their plan’s network, decide to disenroll and can’t obtain an out-of-pocket limit which they had previously had in Medicare Advantage,” Boccuti said.

That’s exactly the problem facing Rick Timmins, a retired veterinarian in Washington state. When Timmins was continually delayed care for melanoma, he explored getting out of his Medicare Advantage plan. “I wanted out of Medicare Advantage big-time,” said Timmins. But when he began to look at Medigap plans, he was told that he wouldn’t be guaranteed to get a plan, and that the insurance company could raise premiums based on a pre-existing condition.

“I doubt that I’ll be able to switch over to traditional Medicare, as I can’t afford high premiums,” Timmins said. “I’m still paying off some old medical debt, so it adds to my medical expenses.”

Medicare was founded in 1965 to end the crisis of medical care being denied to senior citizens in America. “No longer will older Americans be denied the healing miracle of modern medicine,” Lyndon Johnson said at the time. “No longer will illness crush and destroy the savings that they have so carefully put away over a lifetime so that they might enjoy dignity in their later years. No longer will young families see their own incomes, and their own hopes, eaten away simply because they are carrying out their deep moral obligations to their parents, and to their uncles, and their aunts.”

But slowly, private insurers were able to progressively expand their presence in Medicare, with a colossal advance made through George W. Bush’s Medicare prescription drug program in 2003. Now, Medicare Advantage covers a majority of Medicare participants, thanks to extremely aggressive marketing and perks for healthier seniors like gym memberships.

Numerous recent studies have shown Medicare Advantage plans to deny care while boosting the profits of private insurance companies. Defenders of Medicare Advantage argue that managed care—which practically speaking means insurance employees denying care to seniors—improves our health care system.

Denial-of-care issues,

combined with the aforementioned $140 billion drain on the trust fund, have attracted far more scrutiny of the program than in years past. Community organizations like People’s Action, along with other groups like Be A Hero, have stepped up their criticism of the program. The Biden administration proposed new rules this year to curb overbilling through the use of medical codes, but a furious multimillion-dollar lobbying campaign from the health insurance industry led to the rules being implemented gradually.

Still, members of Congress have become more emboldened to speak out against abuses in Medicare Advantage. A recent Senate Finance Committee hearing featured bipartisan complaints about denying access to care. And House Democrats have urged the Centers for Medicare & Medicaid Services to crack down on increases in prior authorizations for certain medical procedures, as well as the use of artificial-intelligence programs to drive denials.

Megan Essaheb, People’s Action’s director of federal affairs, said that Medicare Advantage has become a drain on the federal trust fund. “These private companies are making tons of money,” Essaheb said. “The plans offer benefits on the front end without people understanding that they will not get the benefits of traditional Medicare, like being able to choose your doctor.”

Despite the growing scrutiny, the trapping of patients who want to get out of Medicare Advantage hasn’t gotten as much attention from either Congress or state legislatures that could end the practice.

Coffey, the retired EMT from New Hampshire, told the Prospect that she has paid $6,000 in out-of-pocket expenses this year under a Medicare Advantage program. “If I could go to Medigap, I would have better access to care, I wouldn’t be forced to give up Boston doctors,” she said.

“These insurance companies are allowed to reap as much profit as possible for as little service as they can get away with. They pocket all of our money and they don’t pay for anything, they sit there and deny and delay.”

Medicare Advantage Insurers Hurt You Because Their Profits Depend On It

Physicians for a National Health Program estimate nearly 12 million seniors are in a Medicare Advantage plan that excludes more than 70% of doctors in their county.

Negative stories about Medicare Advantage (MA) insurers are finally making it to mainstream media after percolating below the surface for years. More and more patientsphysicians, and even health care executives are speaking up about the disastrous expansion of this program. Shockingly, some of these stories have come from the insurance companies themselves.

With no hint of shame or irony, executives like CFO Thomas Cowhey of CVS Health have delivered lines such as “The goal next year is margin over membership,” making explicit that more money is their mantra. With all these reports of limited networks, care denials, delayed payments, and corporate greed, you may feel like the story of MA can’t get any worse.

Impossibly, it does. Physicians for a National Health Program (PNHP) has just recently released a bombshell report exposing the sheer breadth of harm that MA insurers have done to patients and health care workers across the country. The report combines policy analysis of dozens of academic studies, news reports, and government investigations with personal stories from people hurt by the insurance companies running these plans. We want to take some time to explore the report’s findings, and highly encourage you to read it in full as well.

Patients in MA experience difficulties from the moment they begin to seek care. By PNHP’s estimate, 11.7 million beneficiaries are in a plan that excludes more than 70% of doctors in their county. These narrow networks mean that patients often have to travel hours for an appointment, and can’t see their preferred family physician or the right specialist for their condition. This can have dire consequences. 

One study found that cancer patients in MA are less likely to be treated at teaching hospitals, Commission on Cancer-accredited hospitals, or National Cancer Institute-designated centers. As a result, these patients suffer higher mortality rates following surgery for a number of kinds of cancer, with some cancer patients in MA plans being twice as likely to die as those in traditional Medicare.

Put simply, narrow networks designed to reap profits in MA are killing patients.

Even if they’re able to find the right doctor, getting care doesn’t become any easier. MA insurers almost always require prior authorization for standard, evidence-based tests, procedures, and treatments, making patients wait weeks or even months to get the life-saving care they need now.

In one story from the report, a physician recounts how damaging this practice can be: 

I had a patient with several chronic diseases who was very sick and had just survived major abdominal surgery, almost miraculously. In the aftermath, she desperately needed to go to acute rehab, which is the most intensive rehab – we found a facility, she liked it, her family liked it, and then her MA plan looked at the place and said ‘No, she’s healthy enough to not go to acute rehab, we won’t authorize it.’ This was after our PM&R specialist, physical therapist, and 3 MDs on our team had told her she needed acute rehab, and that it was the only thing that would keep her out of the hospital again. And this insurer, without anyone ever looking at her, rejected that conclusion. And we knew that on traditional Medicare this never would’ve happened.

Prior authorization is also a gigantic waste of time and resources for doctors and health care workers who want to spend that time caring for patients. PNHP found that medical practices are forced to waste between 11.1 and 20.5 million hours per year filling out authorization forms and fighting with insurance companies to get necessary care approved. 

Much of this is done arbitrarily, wearing patients down with bureaucracy so the insurance company doesn’t have to pay for treatment. When challenged on appeal, somewhere around 80% of denials are reversed, proving there was no good medical reason for the denial in the first place.

Assuming you can find a doctor in your narrow network, and that your doctor makes it through the red-tape nightmare to get your necessary care approved, you may then find yourself dealing with severely limited coverage and thousands of dollars in medical bills. In fact, 7.3 million beneficiaries in MA are considered underinsured based on their reporting of high health care costs. Seniors and people with disabilities are often enticed into MA by advertisements or insurance brokers who tout low premiums and supplemental benefits as big perks of their plans, only to find that once they actually become sick, coverage dries up fast.

After experiencing all of these hardships, many beneficiaries find themselves wanting to get out of MA and go to traditional Medicare, and studies show that those who are seriously ill or who have high health care costs indeed switch out of the program at high rates. Unfortunately, if you stay in MA too long, you may be trapped in the program for good. 

For the first twelve months someone is in MA, they have a guarantee that no Medigap insurer can deny them a policy. However, once this period is up, this guarantee disappears in 46 of 50 states.

If you decide to switch back to traditional Medicare after a year, you are no longer guaranteed to receive this coverage, and you can be denied a policy on the basis of “pre-existing conditions,” a practice that most believe was fully outlawed following the passage of the Affordable Care Act.

Imagine you get sick while in MA, and rack up thousands of dollars in medical bills that you can’t pay. When you try to switch to traditional Medicare, you can be denied Medigap coverage because of the very illness that made you need to leave MA. Many people simply cannot afford Medicare without Medigap, meaning their only option is to stay in their MA plan.

If all of this seems crazy, that’s because it is. Medicare Advantage is a total rejection of the founding principles of Medicare and health care in general, and every harmful practice in this report is done in the name of profit. Restricting networks, denying care, refusing to cover costs–these are all ways that insurance companies in MA keep our taxpayer dollars while leaving patients and health care workers to deal with the consequences. We need to work together to get these greedy middlemen out of Medicare before they take it over entirely. Our hard-earned dollars should be going to traditional Medicare, the program that actually serves its constituents.

5 questions Medicare Advantage data doesn’t answer

https://www.beckerspayer.com/payer/5-questions-medicare-advantage-data-doesnt-answer.html

A lack of data about Medicare Advantage plans means there are several unanswered questions about the program, according to an analysis from Kaiser Family Foundation. 

The analysis, published April 25, breaks down the kinds of Medicare Advantage data not publicly available. Some missing data is not collected from insurers by CMS, and some data is collected by the agency but not available to the public. 

Here are five questions researchers can’t answer without more data, according to Kaiser Family Foundation: 

  1. Insurers are not required to report how many enrollees use supplemental benefits and if members incur out-of-pocket costs with their supplemental benefits. Without this data, researchers can’t answer what share of enrollees use their supplemental benefits, how much members spend out of pocket for supplemental benefits, and if these benefits are working to achieve better health outcomes. 
  2. CMS does not require Medicare Advantage plans to report prior authorizations by type of service. Without more granular data, researchers can’t determine which services have the highest rates of denial and if prior authorization rates vary across insurers and plans. 
  3. Insurers are also not required to report the reasons for prior authorization denials to CMS. This leaves unanswered questions, including what is the most common reason for denials and if rates of denials vary across demographics. 
  4. Medicare Advantage plans do not report complete data on denied claims for services already provided. Without this data, researchers cannot determine how often payers deny claims for Medicare-covered services and reasons why these claims are denied. 
  5. CMS does not publish the names of employers or unions that receive Medicare funds to provide Medicare Advantage plans to retired employees. Without more data, researchers can’t tell which industries use Medicare Advantage most often and how rebates vary across employers.

Medicare Advantage vs Medicare Supplement Plan

Medicare Advantage vs Medicare Supplements (Medigap) | MedicareFAQ