Medicare was established on July 30, 1965, when President Lyndon B. Johnson signed the Social Security Amendments of 1965 into law during a ceremony at the Truman Library in Independence, Missouri. Former President Harry S. Truman, who had long advocated for national health insurance, was issued the first official Medicare card in honor of his efforts. Medicare was created in response to the growing number of elderly Americans who lacked health insurance and struggled with the rising costs of medical care.
Initially, Medicare consisted of two parts: Part A (Hospital Insurance) and Part B (Medical Insurance). Part A was designed to cover inpatient hospital stays and limited skilled nursing and home health care, while Part B helped pay for physician services, outpatient care, and preventive services.
Over the decades, Medicare evolved to meet the changing healthcare needs of its beneficiaries:
In 1972, eligibility was expanded to include individuals under age 65 with long-term disabilities and those with End-Stage Renal Disease (ESRD).
In 1997, the Balanced Budget Act created Medicare+Choice, later renamed Medicare Advantage (Part C), which allowed private insurance companies to offer Medicare benefits.
In 2003, the Medicare Modernization Act introduced Part D, providing prescription drug coverage beginning in 2006.
Today, Medicare remains a cornerstone of healthcare for over 65 million Americans, continuing to adapt through reforms, technology, and policy changes to better serve aging and vulnerable populations.
Medicare is a federal health insurance program in the United States designed primarily for individuals aged 65 and older, although it also provides coverage for certain younger people with disabilities and those with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant). Established in 1965 under the Social Security Act, Medicare helps cover many essential medical services, including hospital care, doctor visits, preventive services, and prescription drugs. The program is divided into four parts: Part A covers inpatient hospital care, skilled nursing facility care, hospice, and some home health services; Part B helps cover outpatient care such as doctor visits, lab tests, and preventive services; Part C, also known as Medicare Advantage, is an alternative way to receive Medicare benefits through private insurance plans approved by Medicare that often include additional services like vision, dental, or hearing coverage; and Part D provides prescription drug coverage through private plans. While Medicare helps reduce healthcare costs, it does not cover all expenses, and many beneficiaries choose to enroll in supplemental insurance plans to help pay for deductibles, copayments, and other out-of-pocket costs.
Medicare Part A covers hospitalization and inpatient care. It pays for hospital stays, skilled nursing facility or nursing home, hospice care and home health services. Any services provided as in inpatient care would fall under Part A coverage such us physical and occupational therapy, medications, counseling for terminally ill people, and more. Part A doesn't cover 100% of your medical costs. You could still have out-of-pocket costs including copayments, coinsurance, and deductibles.
Medicare Part B covers outpatient medical services and preventive services. It pays for all the medical care required to diagnose and treat medical conditions including doctor visits, urgent care, lab work, tests, and medical equipment or devices.
Preventive services refer to medical care received in order to prevent illness, like vaccines, or healthcare services undergone for early detection, like cancer screenings and routine physicals.
Part B also covers ambulance services, outpatient mental health services, durable medical equipment (DME), and prescription drugs given at medical settings
Part B does not cover everything 100%! It has an annual deductible of $266 and 20% coinsurance after meeting the deductibles.
Part C and Medicare Advantage Plans are interchangeable in their names! Medicare Advantage plans are required by law to cover all services provided under Original Medicare Parts A and B of Medicare. Medicare Advantage plans are run by private insurance companies that contract with the federal government to provide the services. Additionally, those plans may also include prescription drug coverage embedded in them. Part C Medicare Advantage plans offer additional services beyond what Original Medicare offers like dental, vision and hearing services. Part C plans often provide Over-the-Counter benefits and fitness membership.
Medicare Advantage plans have low or $0 monthly premiums. Medicare Advantage plans do not cover all services at 100%. They have a schedule of fees like copayments, deductibles, and coinsurance for different services. For example, you may pay $0 copayment when you visit the primary care physician but you may $50 when you visit a specialist. By law, all plans must have an Maximum-Out-Of-Pocket which sets a dollar limit on how much you can spend on your healthcare.
Part D provides prescription drug coverage. Part D Prescription Drug Plans (PDPs) are approved my CMS but are only available through private insurance companies. Beneficiaries can enroll in a standalone Prescription Drug Plan (PDP) if they have chosen Original Medicare or they can enroll in a Medicare Advantage Plan (Part C) in which Part D is included. You can join a stand-alone Part D plan if you have either Part A and/or Part B. However, you must be enrolled in both Parts A and B if you would like to join a Medicare Advantage with Prescription Drug (MAPD) plan. Each insurance company provide a list of approved prescription drugs covered under each of their plans. It is important to make sure that your drugs are covered and also pay attention to how much is your out-of-pocket costs.
Medicare Supplement Plan | vs. | Medicare Advantage Plan |
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You Pay Medicare Part B Premium. You may have to pay Part A Premium if you don't meet certain criteria. You also pay for the Medicare Supplement plan monthly premium | Premium Cost | You continue to Pay Medicare Part B Premium, Part A Premium any, and the monthly Premium of the Medicare Advantage, if any. Whenever you access healthcare services, you are generally required to pay copayments, coinsurance and/or deductibles |
Medicare Supplement has No Network. Your may visit any medical facility and provider across the United States that accept Medicare | Network | Medicare Advantage plans have Network of provider that you have to stay within. However, emergency and urgent care visits are always covered when traveling in the United States |
You may choose any doctor and hospital that are contracted with Medicare and accepting Medicare patients | Doctors & Hospitals | You may be required to choose from the plan network of physicians and hospitals |
You may use any specialist without a referral from your Primary Care Physician | Specialist Referrals | Referrals may be required
before seeing specialists |
Prescription drugs coverage is not included. You have to enroll in Part D Prescription Drug Plan with additional monthly premium | Prescription Drug
Coverage | Most Medicare Advantage Plans include prescription drugs embedded with the plan |
You have 6 month of Medicare Supplement Open Enrollment Period starting on your 65th birth-month with guaranteed issue policy. Afterwards, You can enroll or change Medicare Supplement plan any time, but you are subject to medical underwriting | Enrollment Periods | There are specific periods (IEP, MA OEP, Medicare AEP) during the year to enroll or switch plans. Medicare Advantage has no underwriting |
Generally, most Medicare Supplement plans have no Maximum-Out-Of-Pocket with the exception of plans K and L | Out-of-Pocket
Maximums | CMS requires all Medicare Advantage plans to have a Maximum-Out-Of-Pocket |
Medicare Supplement plans do not have dental, vision, or hearing aid coverage. Some carriers do offer a buy up plan for those benefits with additional premium | Vision, Dental, and
Hearing Services | Most Medicare Advantage plans offer Eye exams, eyeglasses and corrective lenses; Dental exams, cleanings and X-rays; Hearing tests and hearing aids |
Some Medicare Supplement plans provide additional coverage for medical emergencies while traveling abroad | Foreign Travel | Most Medicare Advantage plans do not provide additional coverage for traveling abroad with the exception of medical emergencies |
If you are enrolling during your Medicare Supplement your 6 month Open Enrollment Period, you are guarantee issued coverage with no pre-existing exclusion or waiting period. After this period, you may
need to pass medical underwriting to qualify and a pre-existing waiting period may apply | Pre-existing conditions | You can enroll in Medicare Advantage plans regardless if you have a Pre-Existing condition |
Some Medicare Supplement may offer a fitness membership program | Additional Benefits | Some Medicare Advantage plans offer additional benefits like fitness and wellness programs, transportation services, home modification/
maintenance services, telehealth and social worker teleservices, and more |
Original Medicare Path Part A + Part B + Medicare Supplement + stand alone Prescription Drug Plan | vs. | Medicare Advantage Path Part A + Part B + Medicare Advantage + may include Prescription Drug Plan |
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With Original Medicare path, pay higher in premiums, pay little or nothing as you go! | Out-of-Pocket Cost | With Medicare Advantage path, pay little or nothing in Premiums, pay more as you Go! |
You pay monthly premium for the Medicare Supplement plan in addition to Part B premium | Premium Cost | You may pay low or no monthly premium for the Medicare Advantage plan in addition to Part B premium |
Neither Medicare Part A, Part B, or Medicare Supplement plan cover prescription. You will need to Enroll in a separate Part D Prescription Drug Plan which will have an additional monthly premium | Drug Coverage | Most Medicare Advantage Plans include Part D Prescription Drugs Coverage embedded in the plan with no additional premium |
Depending on the Medicare Supplement plan you choose, your out-of-pocket may be limited when you get healthcare services | Medical Expense | With Medicare Advantage, when you get healthcare services, you may have to pay deductibles, coinsurance, and fixed copays up to the Maximum-Out-Of-Pocket (MOOP) set be the plan |
Depending on the time of enrollment into a Medicare Supplement, you maybe subject to underwriting. Insurance companies my deny you to enroll due to pre-existing conditions or increase your monthly premiums | Underwriting and Enrollment | Medicare Advantage plans have no underwriting guidelines that will cause you to be denied from joining the plan or increase your monthly premium |
Medicare Supplement plans have standardized coverage. Most insurance do not provide additional benefits like Dental, Vision, etc | Additional Benefits | Medicare Supplement may provide additional benefits such as Dental, Vision, Hearing, Gym membership, over-the-counter benefits, etc. |
With Medicare Supplement, you can visit any healthcare facility and provider who are contracted with Medicare anywhere in the United States. You don't need a referral to see a specialist | Network | With Medicare Advantage, you may only visit healthcare facilities and providers who are in the plan network. You may need a referral from your PCP to see a specialist |