Medicare Part A (Hospital Insurance) Plans in California

Medicare Part A is often referred to as “hospital insurance.” This federal government insurance plan mainly helps pay for care when you’re admitted to a hospital or other inpatient facility. It doesn’t cover routine doctor visits or visits with a specialist.

Part A works with Part B (medical insurance) and Part D (prescription drug coverage) to provide the usual coverage you’re used to through your employer health insurance plan or Covered California.

Part A Premiums and Other Costs

One of the first questions people ask when approaching Medicare is whether Part A costs anything. The answer depends on your work history. In my 16 years helping California residents navigate Medicare, I find that most clients are relieved to learn that Part A is free for the majority of people.

Part A Premium

In general, you’ll pay $0 for Part A if you worked and paid Medicare taxes for at least 40 quarters (about 10 years). If you don’t have enough work history, a monthly premium applies.

If your work history falls short of 40 quarters, you may also be able to qualify for premium-free Part A based on a spouse’s work record. One thing I always walk clients through is their actual work history relative to the 40-quarter threshold. You’d be surprised how many people assume they owe a premium when they’re actually eligible for free coverage.

Hospital Deductible

Part A uses a benefit period (not a calendar year) to calculate costs. A benefit period begins the day you’re admitted to a hospital or skilled nursing facility. It ends when you’ve gone 60 consecutive days without any inpatient hospital care. You could owe the deductible more than once in a year if you have multiple hospital stays separated by more than 60 days.

The 2026 Part A deductible is $1,736 per benefit period and covers your first 60 days of inpatient hospital care.

If your hospital stay goes beyond 60 days, coinsurance charges apply.

Hospital Coinsurance

Coinsurance is your share of the cost after you’ve met the deductible. Here’s how Part A coinsurance works for 2026:

Lifetime reserve days are a one-time pool of 60 days you can draw on over your entire lifetime (not per benefit period). Once they’re gone, they’re gone.

After a qualifying hospital stay, Part A may also cover a stay in a skilled nursing facility (SNF).

To qualify for skilled nursing facility coverage, you must first have a qualifying hospital stay of at least 3 consecutive inpatient days.

Medicare Supplement Insurance and Part A Costs

If you choose Original Medicare, a Medigap (Medicare Supplement) plan can help cover some of the out-of-pocket costs that Part A doesn’t pay. Depending on the plan, Medigap can cover:

• Part A coinsurance and hospital costs for up to 365 additional days after Medicare benefits are exhausted
• Part A hospice care coinsurance or copayments
• The Part A deductible
• Blood costs (up to the first 3 pints)

California has some of the strongest Medigap consumer protections in the country. We’ll cover those specifics in the California section below.

Not sure which cost scenario applies to your situation? Reach out for a free consultation and I’ll walk you through it.

Should I Enroll in Part A

You don’t have to enroll. But it also usually doesn’t hurt to do so when you’re eligible, for the following reasons:

• You’ve probably already paid for Part A through your payroll taxes
• It doesn’t cost anything extra when you sign up (for most people)
• Part A could provide supplemental hospital coverage in addition to your current employer plan
• To qualify for QMB assistance, you must have Part A and meet income and resource limits. In California, the resource limit for a couple is $195,000.

When to Enroll in Part A at 65

In most cases, you should enroll in Part A when you turn 65 if any of the following apply:

• You’re retiring at 65. When you stop working and lose employer coverage, Part A and Part B together provide your primary health insurance coverage.
• You’re already receiving Social Security benefits. If you’re collecting Social Security when you turn 65, you’re automatically enrolled in Part A. Opting out requires contacting Social Security directly.
• You don’t have a Health Savings Account (HSA).
• Part A would be premium-free for you. If you or your spouse worked 10 or more years paying Medicare taxes, Part A has a $0 monthly premium.

Talk to your employer if your workplace has fewer than 20 employees. If you don’t enroll in Part A when you become eligible, your employer plan may not fully cover hospital bills.

Who Might Not Enroll at 65

Once you enroll in Medicare (even just Part A), you can no longer contribute to an HSA. Part A coverage can also be retroactive for up to 6 months, which can result in tax penalties if you contributed to your HSA during that retroactive period. If you’re actively contributing to an HSA and want to continue doing so, delaying Part A enrollment may make sense.

Reasons to Delay Part A

• You’re still working at a company with 20 or more employees and covered by their health plan (which counts as creditable coverage and is primary)
• You want to continue contributing to your Health Savings Account (HSA) with a high-deductible health plan
• You don’t yet have enough work credits to qualify for premium-free Part A (for example, if you recently immigrated to the U.S.)

It’s possible to delay Medicare Part A and enroll later using a Special Enrollment Period after you retire or lose coverage. Consult with a specialist before making that decision.

What Medicare Part A Covers

Part A is designed around inpatient care. It pays for services you receive while admitted to a hospital or inpatient facility (not for outpatient treatment or routine care). Here’s a quick reference for what’s covered and what isn’t:

Hospital Admission

Hospital admission means you’re formally checked in and assigned a hospital bed (as opposed to being kept for observation, which is considered outpatient). Part A covers the facility side of your care, including:

• Your hospital room and nursing services
• Meals during your stay
• Medications and medical supplies used during admission
• Lab tests and imaging ordered during your stay

Skilled Nursing Facilities

If you have a qualifying hospital stay of at least 3 consecutive inpatient days, Part A may cover short-term care in a skilled nursing facility (SNF). This is designed for rehabilitation or recovery (not long-term custodial care). Coverage includes:

• Physical, occupational, and speech therapy
• Specialized nursing care
• Medical monitoring during recovery

Home Health Services

Part A can cover some home health services if they’re ordered by your doctor and are medically necessary. These services are part-time or intermittent (not ongoing), and may include:

• Visits from a skilled nurse
• Physical or occupational therapy
• Medical supplies used during visits

Hospice Care

For people with a terminal illness who choose comfort care rather than continued treatment, Part A covered hospice services include:

• Pain management and symptom control
• Nursing and support services
• Medical equipment related to the terminal condition
• Counseling and family support

What Medicare Part A Does Not Cover

• Preventive services and routine doctor visits (covered by Part B)
• Prescription drugs for home use (covered by Part D)
• Permanent nursing home residence or long-term custodial care
• Most dental, vision, and hearing services

Medicare Eligibility for Part A

Most people become eligible for Medicare Part A at age 65, but eligibility also extends to certain individuals under 65 based on disability or medical condition.

1. Age 65 or Older

To enroll in premium-free Part A at 65, you or your spouse must have paid Medicare taxes for at least 10 years (40 quarters). You must also meet one of the following:

• U.S. citizen or legal permanent resident (5 or more consecutive years in the U.S.)
• You or your spouse worked and paid Medicare taxes for at least 40 quarters

If you worked 40 quarters, you usually get premium-free Part A. If you worked fewer quarters, you can still enroll but must pay a monthly premium.

Most people who are eligible for premium-free Part A and already receiving Social Security benefits are enrolled automatically. If you’re not receiving Social Security yet when you turn 65, you’ll need to sign up actively during your Initial Enrollment Period.

2. Disability Benefits (Under Age 65)

You can qualify for Medicare before 65 if you’ve been receiving disability benefits from Social Security Disability Insurance (SSDI) or the Railroad Retirement Board for 24 consecutive months.

• Must have received SSDI or RRB disability benefits for 24 consecutive months

After 24 months of continuous disability benefits, you are automatically enrolled in Medicare, including Part A.

3. Certain Medical Conditions

Some people qualify immediately regardless of age or work history:

• End-Stage Renal Disease (ESRD)
• Amyotrophic Lateral Sclerosis (ALS)

For ALS, Medicare enrollment is automatic the same month disability benefits begin. For ESRD, you must apply and meet specific treatment requirements.

Enrolling in Part A

When and how you enroll depends on your situation. Here’s an overview of the main enrollment windows:

Automatic Enrollment

If you’re already receiving Social Security or Railroad Retirement Board (RRB) benefits when you turn 65, you’ll be automatically enrolled in both Part A and Part B. Your Medicare card will arrive in the mail about 3 months before your 65th birthday.

Initial Enrollment Period (IEP)

If you’re not yet receiving Social Security when you turn 65, you need to sign up yourself. The IEP is a 7-month window that gives you plenty of time, but when you sign up within that window affects when your coverage starts.

Signing up during the first 3 months of your IEP (before your birthday month) means coverage begins on the first day of your birthday month. Waiting until the month of or after your birthday can delay your coverage start date.

• 3 months before your 65th birthday month
• Your birthday month
• 3 months after your 65th birthday month

You can enroll through the Social Security Administration website, by calling 1-800-772-1213, or by visiting your local Social Security office.

General Enrollment Period (GEP)

If you miss your Initial Enrollment Period and don’t qualify for a Special Enrollment Period, you can sign up during the General Enrollment Period, which runs January 1 through March 31 each year. Coverage begins on the first day of the month after you enroll. A late enrollment penalty will likely apply.

Special Enrollment Period (SEP)

If you were covered by a qualifying employer or union health plan when you turned 65, you qualify for a Special Enrollment Period. You have an 8-month window to enroll in Part A starting from the month after your employer coverage ends (or from when employment ends, whichever comes first). This applies to coverage based on your own current employment or your spouse’s current employment.

Late Enrollment Penalty

While Part A isn’t generally required, you could face a late enrollment penalty if you delay enrollment without qualifying coverage. If you have to pay a premium for Part A and you enroll late, your monthly premium increases by 10%.

For example, if your Part A premium is $565 per month, the penalty adds $56.50 per month on top of that.

Unlike the Part B late enrollment penalty (which lasts for as long as you have Part B), the Part A penalty doesn’t last for your lifetime. You pay the penalty for twice the number of years you delayed enrollment. If you delayed for two years, you pay the penalty for four years. Most people who qualify for premium-free Part A never face this issue since they’re often automatically enrolled or sign up during their IEP.

Unsure whether a penalty applies to your situation? Get in touch before a missed window costs you.

Medicare Part A in California

California residents have access to programs and protections that aren’t available in most other states. If you’re approaching Medicare eligibility in California, these are worth knowing.

California’s Unique Medigap Rules

In most states, your best opportunity to enroll in a Medicare Supplement (Medigap) plan without medical underwriting is during the 6-month Open Enrollment Period that begins when you first sign up for Part B. After that window closes, insurers can typically deny coverage or charge higher premiums based on your health history.

California is one of a small number of states that requires insurers to offer Medigap plans on a guaranteed-issue basis year-round. This means California residents can switch or enroll in a Medigap plan at any time (not just during the initial enrollment window). This gives you significantly more flexibility to adjust your coverage as your health needs and financial situation change over time.

Knowing when and how to use these state protections can make a meaningful difference in what you pay for coverage over the years. As a California-licensed independent broker with 16 years of experience, this is exactly the kind of guidance I provide to clients throughout the San Fernando Valley and Southern California.

Medi-Cal and Medicare Dual Eligibility

California’s Medi-Cal program (the state’s version of Medicaid) can help cover some of the costs that Medicare doesn’t pay, including Part A premiums, deductibles, and coinsurance, for residents who qualify based on income and assets. Programs to be aware of include:

• Qualified Medicare Beneficiary (QMB): Covers Part A and Part B premiums, deductibles, and coinsurance. For couples in California, the 2026 resource limit is $195,000.
• Specified Low-Income Medicare Beneficiary (SLMB): Covers Part B premiums for those with slightly higher income than QMB requires.
• Qualifying Individual (QI): Also helps with Part B premiums for those with income modestly above the SLMB threshold.

If you think you may qualify for one of these programs, I can help you identify the right fit and connect you with the appropriate resources.

HICAP (California’s Free Medicare Counseling Program)

California offers a free counseling service called HICAP (Health Insurance Counseling and Advocacy Program), which is part of the national SHIP network. HICAP volunteers can answer general Medicare questions and help you understand your options at no cost.

For more personalized guidance (including plan comparisons across 150 or more Medicare plans from all major carriers), an independent broker provides a level of service and continuity that a volunteer counselor is not set up to offer.

Southern California Provider Networks

If you’re in the Los Angeles area or Southern California, your plan selection matters a great deal depending on which hospitals and doctors you use. Whether you rely on Cedars-Sinai, UCLA Health, Providence, or a local physician group, not every Medicare plan in California works with every provider. I specialize in helping clients in the San Fernando Valley and surrounding areas find plans that work with the providers they already trust.

The Medicare Advantage Plan Alternative

Medicare Advantage (Part C) is an alternative way to receive your Medicare benefits through a private health plan approved by Medicare. These plans must cover everything Original Medicare covers, and many include additional benefits like dental, vision, hearing, and prescription drug coverage (Part D).

It’s important to think carefully about which approach fits your situation. Original Medicare (Parts A and B) allows you to go to any hospital in the U.S. that accepts Medicare, which can be beneficial if you travel frequently or want maximum provider flexibility. Without a supplemental plan, however, out-of-pocket costs can be significant.

A Medicare Advantage plan will typically only cover care within the plan’s provider network (except in emergencies), but these plans often come with lower monthly premiums, built-in drug coverage, and out-of-pocket cost caps that Original Medicare doesn’t have. As an independent broker, I work with all major carriers in California and can show you a side-by-side comparison without any bias toward a particular plan.

Prescription Drug Coverage and Part D

Medications administered during an inpatient hospital stay are covered under Part A. These could include:

• IV antibiotics for infections
• Anesthesia during surgery
• Anti-nausea medications
• Medications for pain, anxiety, or breathing problems
• Any other drugs given by IV or injection while you’re admitted

You don’t pay separately for each drug during a hospital stay. They’re bundled into your Part A coverage.

For prescriptions you pick up at a pharmacy and take at home, you need a separate Part D drug plan. If you don’t enroll in Part D when you first become eligible and don’t have other creditable drug coverage (such as through an employer plan), you may face a late enrollment penalty calculated based on how long you went without creditable coverage. With access to 150 or more plans across all major carriers, I help California clients compare Part D options based on their actual medications rather than just the monthly premium.

Frequently Asked Questions About Medicare Part A

Is Medicare Part A free in California

For most California residents, yes. If you or your spouse worked and paid Medicare taxes for at least 10 years (40 quarters), Part A has a $0 monthly premium. If you worked 30 to 39 quarters, the 2026 premium is $311 per month. Fewer than 30 quarters means the premium is $565 per month.

What is the difference between Medicare Part A and Part B

Part A is hospital insurance. It covers inpatient hospital stays, skilled nursing facility care, hospice, and some home health services. Part B is medical insurance and covers outpatient care, doctor visits, preventive services, and durable medical equipment. Most people need both Part A and Part B together (commonly referred to as Original Medicare).

Does Medicare Part A cover dental or vision

No. Original Medicare Part A does not cover dental, vision, or hearing care. These services are often available as additional benefits through Medicare Advantage (Part C) plans. If you have Original Medicare and want dental or vision coverage, you would need to purchase a separate standalone plan.

Can I have Medicare Part A while still working

Yes, but there are important considerations. If your employer has 20 or more employees, your employer’s plan is primary and Medicare is secondary. More importantly, once you enroll in Part A, you can no longer contribute to a Health Savings Account (HSA). If you’re actively contributing to an HSA, delaying Part A enrollment may be the right move.

What is the Medicare Part A deductible for 2026

The 2026 Part A inpatient deductible is $1,736 per benefit period. Unlike most insurance deductibles, this is not a calendar-year deductible. A new benefit period (and a new deductible) begins each time you’ve been out of inpatient care for 60 consecutive days, meaning you could owe this deductible more than once in a single year.

What happens if I miss my Medicare Part A enrollment window

If you miss your Initial Enrollment Period without a qualifying exception (such as active employer coverage), you’ll need to wait for the General Enrollment Period (January 1 through March 31 each year). You may also face a late enrollment penalty: a 10% premium increase for each full year you were eligible but didn’t enroll, lasting for twice the number of years you delayed.

Does Medicare Part A cover nursing home care

Only short-term skilled nursing facility care, and only under specific conditions. Part A covers up to 100 days per benefit period in a skilled nursing facility, but only after a qualifying inpatient hospital stay of at least 3 consecutive days. Long-term custodial nursing home care (help with daily activities like bathing and dressing) is not covered by Medicare and is typically paid for through Medi-Cal (California’s Medicaid program) or a long-term care insurance policy.

Can I have both Medicare Part A and a Medicare Advantage plan

Yes. When you enroll in a Medicare Advantage (Part C) plan, you keep your Medicare eligibility but receive your benefits through the private plan instead of Original Medicare. You must be enrolled in both Part A and Part B to join a Medicare Advantage plan. The Advantage plan then covers your Part A hospital benefits (along with Part B and usually Part D) through its own network and cost structure.