How Each Administration Shaped Prescription Drug Costs

Medicare Part D and Presidents

A president-by-president breakdown of Medicare Part D premiums, plan closures, and total costs from the program's 2007 rollout through the Inflation Reduction Act era.

Mark Annese
Mark AnneseSeptember 1, 2024Updated July 22, 202610 min read

What Is Medicare Part D and Who Runs It?

However you want to look at it, when it comes to Medicare's Part D and presidents, the President and their Administration have a large role in what the costs of coverage will be.

What Is Medicare Part D?

According to Medicare.gov (the federal government), Part D is optional prescription drug coverage for those in Original Medicare and is available for those who:

  • Have Medicare Part A (Hospital Insurance) or Part B (Medical Insurance).
  • Live in the service area of the plan they are choosing.
  • Are a U.S. citizen or lawfully present in the U.S.
  • Complete an enrollment request during a valid election period.

Who Provides Medicare Part D Coverage?

According to the Medicare Board of Trustees, Medicare Part D is simply "access to drug insurance coverage on a voluntary basis" with the access being "heavily subsidized by Medicare."

Ultimately, private health insurers run the day-to-day operations, create and also sell Part D plans, while they are also paid to do so by the government.

Private health insurers are responsible for (on a small scale):

  • Setting the monthly premium and cost of medications.
  • Creating the drug formularies (list of drugs the plan will cover).
  • Running the day-to-day operations of the Part D plan.

The government is responsible for (on a small scale):

  • The terms of coverage and regulations that the private health insurers must follow (tier structure, gap coverage, etc.).
  • The annual deductible if a Part D plan is to have one.
  • Paying subsidies to the private health insurers to help offset the costs that Medicare beneficiaries will incur.

Keep in mind that Part D premiums are also income-sensitive: higher earners pay an IRMAA surcharge on top of their Part D premium, determined by their income from two years prior. You can see the full picture of how IRMAA is calculated here.

One more important point before we get to the numbers: there are no regulations stating that the private health insurers must maintain any Part D plan from year to year. If a private health insurer decides that the current year's Part D plan is not working to their standards, they can — and most likely will — close that Part D plan once the year is over. Historically, about one-third of all Part D plans do not continue for more than 2 years.

Here is a breakdown of how continuous Medicare Part D plans have inflated in terms of premiums and total costs throughout each President's term in office.

Key Takeaway:

Private insurers run Part D day to day, but the federal government writes the rules and pays the subsidies. That makes each Presidential Administration directly responsible for what retirees pay for prescription drug coverage — and plans can and do close every year.

President George Bush (2007 – 2009)

Under President Bush's two terms in office, Medicare Part D was established (2002) and then rolled out to the public (2007).

During his only 2 years of overseeing the program, premiums and total cost grew by the largest amount on record while over 20% of the original Part D plans closed.

The Number of Part D Plans Under President Bush

  • Number of plans in 2007 = 2,788.
  • Number of plans still existing in 2009 = 2,168.
  • 22.24% of the original Part D plans issued in 2007 closed.
  • 2 new Part D plans were made available — only in Florida and Michigan.
  • The average monthly premium for these new Part D plans = $42.26.

Premium and Total Cost Growth Under President Bush

  • Premium increase on an annual average = 16.69%.
  • $35.03 = average monthly premium in 2007.
  • $47.70 = average monthly premium in 2009.
  • Total cost (premium + deductible) increase = 13.55%.
President George Bush (R) 2007 – 2009
Original number of Part D plans2,788
Part D plans remaining2,168
Number of dropped Part D plans620
Existing Plans Cost Breakdown20072009% Change (annual)
Premium$35.03$47.7016.69%
Premium + Deductible$43.45$56.0213.55%

President Barack Obama, First Term (2010 – 2013)

During President Obama's first term in office, 62% of the Part D plans available in his first year closed, while the remaining Part D plans increased in cost annually.

Thankfully, 7 new Part D plans were opened, and they were significantly lower in terms of the monthly premium than the existing Part D plans.

The Number of Part D Plans in Obama's First Term

  • Number of plans in 2010 = 2,366.
  • Number of plans in 2013 = 899.
  • 62% of all Part D plans from 2010 closed by 2013.
  • 7 new Part D plans were created.

Part D Costs in Obama's First Term

  • Premiums increased on an annual average of 5.35%.
  • $50.11 = average monthly premium in 2010.
  • $58.59 = average monthly premium by 2013.
  • $46.40 = average monthly premium for the 7 new plans in 2013.
  • Total cost (premium + deductible) increase = 4.60%.
President Barack Obama (D) 2010 – 2013
Original number of Part D plans2,366
Part D plans remaining899
Number of dropped Part D plans1,467
Existing Plans Cost Breakdown20102013% Change (annual)
Premium$50.11$58.595.35%
Premium + Deductible$63.15$72.274.60%

President Barack Obama, Second Term (2014 – 2017)

In President Obama's second term in office, 53.42% of all plans that were available in 2014 closed by the end of his presidency in 2017.

The existing Part D plans grew by an average of about 4% annually, while the new plans introduced in 2017 were roughly 18% more expensive than the existing ones.

The Number of Part D Plans in Obama's Second Term

  • Number of plans in 2014 = 1,651.
  • Number of plans in 2017 = 769.
  • 53.42% of all Part D plans from 2014 closed by 2017.
  • 5 new Part D plans were created.

Part D Costs in Obama's Second Term

  • Premiums increased on an annual average of 4.04%.
  • $46.94 = average monthly premium in 2014.
  • $52.86 = average monthly premium by 2017.
  • $62.41 = average monthly premium for the 5 new plans in 2017.
  • Total cost (premium + deductible) increase = 5.02%.
President Barack Obama (D) 2014 – 2017
Original number of Part D plans1,651
Part D plans remaining769
Number of dropped Part D plans882
Existing Plans Cost Breakdown20142017% Change (annual)
Premium$46.94$52.864.04%
Premium + Deductible$62.01$71.815.02%

President Donald Trump (2018 – 2021)

Under President Donald Trump, the Part D plans underwent the smallest annual increases in both premiums and total costs on record.

10 new Part D plans were created, with premiums and total costs both being cheaper than the existing plans.

The Number of Part D Plans Under President Trump

  • Number of plans in 2018 = 1,172.
  • Number of plans by 2021 = 947.
  • Only 19.20% of all Part D plans from 2018 closed by 2021.
  • 10 new Part D plans were created.

Part D Costs Under President Trump

  • Premiums increased on an annual average of 1.36%.
  • $48.05 = average monthly premium in 2018.
  • $50.03 = average monthly premium by 2021.
  • $47.20 = average monthly premium for the 10 new plans in 2021.
  • Total cost (premium + deductible) increase = 2.13%.
President Donald Trump (R) 2018 – 2021
Original number of Part D plans1,172
Part D plans remaining947
Number of dropped Part D plans225
Existing Plans Cost Breakdown20182021% Change (annual)
Premium$48.05$50.031.36%
Premium + Deductible$70.00$74.562.13%

President Joseph Biden (2022 – 2024)

During President Biden's term in office, Congress passed the Inflation Reduction Act (IRA).

The IRA places caps on how much Part D plan providers (private health insurers) can increase Part D plan premiums on an annual basis through 2029.

To quote the IRA:

"The base beneficiary premium for a prescription drug plan for a month in 2024 through 2029 shall be the lesser of:

  • The base beneficiary premium computed as if legislation was not enacted, or
  • An increase of 6 percent."

Unfortunately for Medicare Part D beneficiaries, from 2022 to 2024 the Part D premiums increased by over 13% annually.

The Number of Part D Plans Under President Biden

  • Number of plans in 2022 = 1,143.
  • Number of plans by 2024 = 953.
  • Only 16.62% of all Part D plans from 2022 closed by 2024.
  • There were no new Part D plans created — and that is not good news.

Part D Costs Under President Biden

  • Premiums increased on an annual average of 13.24%.
  • $49.84 = average monthly premium in 2022.
  • $63.90 = average monthly premium by 2024.
  • Total cost (premium + deductible) increase = 9.53%.

With no new Part D plans being created under President Biden's presidency, retirees who found their Part D plans increasing by double digits had no other options but to pay more.

President Joseph Biden (D) 2022 – 2024
Original number of Part D plans1,143
Part D plans remaining953
Number of dropped Part D plans190
Existing Plans Cost Breakdown20222024% Change (annual)
Premium$49.84$63.9013.24%
Premium + Deductible$79.05$94.839.53%

Remember that higher-income beneficiaries pay even more than these base premiums through the Part D IRMAA surcharge. If your clients are near the IRMAA bracket thresholds, rising base premiums compound the problem — see the 2025 IRMAA brackets for the current surcharge amounts.

Conclusion: Which President Did the Best on Part D?

Due to the federal regulations that the private health insurers must follow, as well as the money (subsidies) they receive from the government, each Presidential Administration is — and will be — directly responsible for what retirees in Medicare have to pay for Part D coverage.

Based on this plan-level data, since the inception of Medicare Part D's coverage in 2007, existing plans saw their smallest annual premium and total-cost increases during President Trump's term (2018 – 2021), while the steepest growth came in the program's first two years under President Bush and again from 2022 to 2024 under President Biden.

What the Future May Bring for Medicare Part D

As can be seen from the information above, each year private health insurers drop plans and then create new ones the following year.

To avoid the constraints of the Inflation Reduction Act, all the private health insurers need to do is close already existing Part D plans and then create new ones for the upcoming year. New Part D plans do not have to adhere to the 6.00% cap on premiums that the IRA imposes.

If the Inflation Reduction Act is not changed, the end result just may be that:

  • Many retirees will have to go through the process of finding a new Part D plan each and every year.
  • Part D premiums will grow excessively higher each year to offset the costs that the private health insurers incur from having to create new Part D plans.

With now over 11,600 people retiring each day and having to enroll into Medicare to receive their Social Security benefit, any significant Part D increases may alter their retirement — even in an adverse way. For higher-income retirees the effect is doubled, because Medicare's IRMAA surcharges ride on top of these rising base premiums. If a client's income has dropped due to retirement or another life-changing event, they may be able to reduce that surcharge with an IRMAA appeal filed on Form SSA-44.

Your health is your most important asset — the time to plan for it is today. RetirementAdvisorPro gives financial advisors the tools to model Medicare costs, IRMAA surcharges, and healthcare inflation inside a client's full retirement income plan.

  • Private insurers run Part D plans, but federal policy sets the rules and subsidies
  • About one-third of Part D plans do not survive more than 2 years
  • Largest premium growth: 16.69% annually under Bush (2007-2009)
  • Smallest premium growth: 1.36% annually under Trump (2018-2021)
  • Premiums rose 13.24% annually under Biden (2022-2024) despite the IRA
  • The IRA's 6% premium cap does not apply to newly created Part D plans
  • Over 11,600 people retire each day and must plan for Medicare costs

Frequently Asked Questions

Common questions about our platform and services

How do presidents affect Medicare Part D costs?

Each administration sets the terms of coverage and regulations that private health insurers must follow, controls the annual deductible rules, and pays the subsidies that offset beneficiary costs. Because Part D is heavily subsidized by Medicare, federal policy under each president directly shapes what retirees pay for prescription drug coverage.

Who actually runs Medicare Part D plans?

Private health insurers run the day-to-day operations of Part D. They set monthly premiums and medication costs, create the drug formularies, and sell the plans. The federal government sets the regulatory framework, controls the annual deductible rules, and pays subsidies to the insurers.

Under which president did Part D premiums grow the least?

Based on plan-level data from the program's 2007 rollout through 2024, existing Part D plans saw their smallest annual increases under President Trump (2018-2021): premiums grew about 1.36% per year and total costs (premium plus deductible) about 2.13% per year.

Under which president did Part D premiums grow the most?

Existing Part D plan premiums grew fastest during two stretches: roughly 16.69% annually under President Bush in the program's first two years (2007-2009), and about 13.24% annually under President Biden from 2022 to 2024.

Does the Inflation Reduction Act cap Part D premium increases?

The IRA caps annual increases in the base beneficiary premium at 6% for 2024 through 2029 — but the cap applies to existing plans. Insurers can close an existing plan and launch a new one, and new Part D plans do not have to adhere to the 6% cap, which is a significant loophole.

How often do Medicare Part D plans close?

Part D plans close routinely. There is no regulation requiring insurers to maintain a plan from year to year, and historically about one-third of all Part D plans do not continue for more than two years. When a plan closes, enrollees must shop for a replacement during the next enrollment period.

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