What is the difference between Medicare and Medi-Cal in California?
You found out you needed to know this last week, or yesterday, or an hour ago. A hospital social worker said the words and waited for you to nod. A neighbor mentioned her mother is on both, and you did not know there was a both. Now you are reading this at the kitchen table because your parent needs an answer and you need a foothold.
Medicare and Medi-Cal are two different programs. They sound alike, they are sometimes used in the same sentence, and in California they often pay for the same person at the same time. They are not the same thing. Medicare is federal health insurance most people get at 65. Medi-Cal is California's version of Medicaid, the joint federal and state program for people with limited income and assets. The Centers for Medicare and Medicaid Services (CMS) runs Medicare. The California Department of Health Care Services (DHCS) runs Medi-Cal.
If your parent has both, the federal government calls them a dual eligible. In California you will hear Medi-Medi. Same person, two cards, two programs paying together. The way they pay together is what this guide unpacks.
Why families always confuse these two programs
The names are almost identical. Medi-Cal sounds like a contraction of Medicare. Both arrived in the same federal law in 1965. Both serve older Americans. Both involve red tape and waiting rooms. And both get summarized in casual conversation as the government coverage, which papers over the differences families need to understand.
The plainest split is this. Medicare is age-based. If you worked or your spouse worked long enough, you get it at 65. Income and assets do not matter. Medi-Cal is need-based. The California Department of Health Care Services looks at how much income comes in each month and, for some categories, what assets the household holds. Medicare is your parent's insurance card. Medi-Cal is the safety net underneath that card, designed to fill in what Medicare leaves uncovered for those who qualify.
Medicare is also uniform across the country. The benefits in Los Angeles look like the benefits in Boise. Medi-Cal is California-specific. California has made choices over the past decade that other state Medicaid programs have not made, and those choices shape what your parent can access.
What Medicare actually covers for an older parent
Medicare has four parts. Each one covers a different slice of care, and each one has its own rules and limits.
Part A is hospital insurance. It pays for inpatient hospital stays, a limited stretch of skilled nursing facility care after a qualifying hospital stay, hospice, and some home health visits. For most people who paid Medicare taxes long enough, Part A has no monthly premium.
Part B is outpatient and medical. Doctor visits, lab work, outpatient surgery, durable medical equipment, preventive screenings. Part B has a monthly premium that the Social Security Administration usually pulls directly from a retiree's Social Security check.
Part C is Medicare Advantage. Medicare Advantage is a private plan, approved by the Centers for Medicare and Medicaid Services, that bundles Part A and Part B and often adds Part D drug coverage and extras like dental or vision. The federal program pays the private insurer a fixed amount per member per month, and the insurer takes on the responsibility for covering the care.
Part D is prescription drug coverage. Part D is sold by private insurers, regulated by the Centers for Medicare and Medicaid Services, and has its own premiums and copays.
The skilled nursing limit families never see coming
Here is the part most adult children learn the hard way. Medicare Part A will pay for up to 100 days in a skilled nursing facility, but only after a qualifying inpatient hospital stay, and only if your parent is actively benefiting from skilled care. The first 20 days are covered in full. Days 21 through 100 carry a daily coinsurance amount. After day 100, Medicare pays nothing for that stay.
The deeper point is the distinction between skilled care and custodial care. Medicare pays for skilled care. The Centers for Medicare and Medicaid Services defines skilled care as care that must be delivered or supervised by licensed medical professionals: wound care, physical therapy after a stroke, IV antibiotics, complex medication management. Medicare does not pay for custodial care. Custodial care is help with what the federal government calls activities of daily living: bathing, dressing, toileting, eating, transferring from bed to chair, moving safely through a home. That help does not require a nurse. It requires another human being in the room. Medicare was not built to pay for that human being, and it does not.
This is the line that surprises almost every family. If your mother needs help bathing and dressing for the next five years, Medicare will not pay for the person providing that help. Not in a nursing home. Not in assisted living. Not in her own home. That is the moment most California families discover Medi-Cal exists.
What Medi-Cal covers that Medicare does not
Medi-Cal is the program that picks up where Medicare drops off, and for California seniors who qualify, the list of what it covers is long.
Medi-Cal pays for long-term care in a nursing facility when the care is medically necessary and the resident meets the program's financial rules. That is the single biggest reason families end up needing it. Once Medicare's 100-day window closes, Medi-Cal can become the primary payer for ongoing nursing facility care.
Medi-Cal pays for In-Home Supportive Services, the California program that pays a caregiver, often a family member, to help an eligible adult with daily activities at home. In-Home Supportive Services is administered through the California Department of Social Services (CDSS) and your county social services office, and the hours your parent is authorized for are based on a county social worker's assessment of need.
Medi-Cal pays for Community-Based Adult Services, the licensed adult day program model that lets a frail adult spend the day in a supervised setting and return home at night. Community-Based Adult Services is the successor to the older Adult Day Health Care benefit and is now embedded in Medi-Cal managed care in most California counties.
Medi-Cal pays for the Assisted Living Waiver in counties where it operates, which uses Medi-Cal dollars to fund care in a licensed Residential Care Facility for the Elderly for people who would otherwise need a nursing facility. The Assisted Living Waiver has been chronically capped and has long waitlists in many regions, but where slots are open, it is one of the most powerful tools the state has built.
Medi-Cal also covers things Medicare covers, but it absorbs the cost-sharing your parent cannot afford. For a dual eligible, Medi-Cal often pays the Medicare Part B premium, the Medicare deductibles, and the coinsurance amounts that wipe out the savings of middle-income retirees who do not qualify. That quiet wraparound is one of the most valuable parts of being a dual eligible in California.
What changed in 2024 that families need to know
For decades, the asset test was the obstacle that kept families up at night. To qualify for Medi-Cal long-term care, a senior had to spend down their savings to a very low number, and the rules around what counted and what did not were dense. The California Department of Health Care Services eliminated the asset limit for non-MAGI Medi-Cal effective January 1, 2024. Non-MAGI is the category most seniors apply under. The change does not eliminate the income rules, and it does not eliminate every asset question for every specialized program, but it removes the cliff that defined the conversation for a generation.
If your last assumption about Medi-Cal eligibility was formed before 2024, that assumption is out of date. Families who were told ten years ago that they would never qualify should ask again. Justice in Aging, a national nonprofit headquartered in California, has published plain-language summaries of the asset limit change for both families and advocates.
How dual eligibility actually works day to day
Imagine your mother is 78. She has had her Medicare card since she turned 65. Her income is Social Security and a small pension, and she recently qualified for Medi-Cal. She is a dual eligible. In California, she has Medi-Medi.
She goes to her primary care doctor. The doctor bills Medicare first. Medicare pays its share. Whatever Medicare does not pay, the doctor bills to Medi-Cal. Medi-Cal pays the remaining amount up to its allowed rate. Your mother pays nothing at the visit.
She picks up a prescription. Federal rules send dual eligibles' drug coverage through Medicare Part D, so Medi-Cal does not duplicate the drug benefit. Her Part D premium and copays are reduced through the Low Income Subsidy, often called Extra Help, which the Social Security Administration administers.
She falls. She is admitted to the hospital for three days. Medicare Part A covers the hospital stay. The hospital discharges her to a skilled nursing facility for rehab. Medicare covers the first 20 days fully. From day 21 forward, Medi-Cal picks up the Medicare coinsurance, so she still owes nothing out of pocket.
After 40 days the rehab team says she has plateaued. She is not improving anymore. She still needs help bathing, dressing, and getting to the bathroom, but she does not need skilled nursing. Medicare stops paying. This is the cliff. Without Medi-Cal, this is the day the family meeting happens about how to cover a private-pay nursing facility bill. With Medi-Cal, she can transition into long-term care status in the same facility, if the facility is Medi-Cal certified, and Medi-Cal becomes the primary payer for her ongoing custodial care.
Or she can go home, and the family can apply for In-Home Supportive Services through the California Department of Social Services so a caregiver, possibly her daughter, gets paid to help her at home.
Or she can apply for the Assisted Living Waiver, if her county participates and a slot opens, so Medi-Cal pays for her care in an assisted living setting instead of a nursing facility.
Medicare carries the acute medical events. Medi-Cal carries the long, slow tail of help that comes after.
Medicare Advantage and D-SNPs: what California families should know
If your parent has Medicare Advantage instead of original Medicare, the day-to-day mechanics look different. Medicare Advantage plans are run by private insurers approved by the Centers for Medicare and Medicaid Services. The plan replaces original Medicare as the way your parent's hospital and outpatient care is paid for, though Medicare itself is still the underlying program.
For dual eligibles, there is a specific kind of Medicare Advantage plan called a Dual Eligible Special Needs Plan, or D-SNP. A D-SNP is built for people who have both Medicare and Medi-Cal. It coordinates the two programs so the senior has one care team, one set of contracted providers, and one phone number to call when something goes wrong.
California has been pushing harder in this direction. Under the state's CalAIM initiative, which the California Department of Health Care Services launched to modernize how Medi-Cal works, dual eligibles are increasingly being aligned into matched Medicare and Medi-Cal plans run by the same parent organization. The intent is fewer dropped handoffs and fewer that is the other plan's problem calls.
You do not have to enroll in a D-SNP. Many dual eligibles keep original Medicare and use Medi-Cal as the secondary payer, and that arrangement works fine. But if your parent's care is getting complicated, a D-SNP is worth asking about, because the care coordination is sometimes the difference between a family running everything themselves and a family with a case manager who returns their calls.
What Medicare does not pay for, even though everyone assumes it will
This section deserves a second read, because it is the source of most of the panic conversations families have with us.
Medicare does not pay for assisted living. Not the rent, not the meals, not the personal care aide. If your parent moves into a licensed Residential Care Facility for the Elderly in California, Medicare contributes nothing toward that bill.
Medicare does not pay for long-term custodial care in a nursing home. Medicare pays for short-term skilled rehab. Once the care shifts to custodial, Medicare exits.
Medicare does not pay for non-medical home care. If you want to hire a caregiver to come to your mother's house to help her bathe, do laundry, and make lunch, Medicare does not pay that caregiver. Medicare home health is a real benefit, but it covers skilled, intermittent care, not ongoing custodial help.
Medicare does not pay for adult day care. The Community-Based Adult Services program in California is a Medi-Cal benefit.
Medicare does not pay for most dental, vision, or hearing care under original Medicare. Some Medicare Advantage plans bundle these benefits in, which is why they are popular, but the bundled benefits are usually limited and come with their own networks and rules.
Medicare does not pay for care delivered outside the United States, except in very narrow situations spelled out by the Centers for Medicare and Medicaid Services.
The Centers for Medicare and Medicaid Services publishes all of this each year in its Medicare and You handbook, which arrives in the mail every fall and is one of the few federal documents written in clear language. If your parent has not opened theirs, open it together.
The middle-income squeeze in California
A senior in California whose income is Social Security plus a modest pension may sit above the Medi-Cal full-benefit income limit and well below the cost of private-pay assisted living. The squeeze is real, and it is not a failure of planning. It is a structural gap.
There are real options to look at, and none of them is magic.
First, look at Medi-Cal share of cost. Some California seniors qualify for Medi-Cal but are required to pay a portion of their income each month toward care before Medi-Cal begins paying. For a senior in a nursing facility, the share-of-cost arithmetic sometimes comes out far better than full private pay. The county Medi-Cal office can run that calculation.
Second, look at the Medicare Savings Programs. The California Department of Health Care Services administers programs that help pay Medicare premiums and cost-sharing for seniors whose income is too high for full Medi-Cal but still limited. The income limits are higher than the full Medi-Cal thresholds, and many families who do not qualify for full Medi-Cal do qualify for help with Medicare costs.
Third, if your parent is a wartime veteran or the surviving spouse of one, look at the Department of Veterans Affairs Aid and Attendance benefit. It is a federal benefit, not a state one, and it can stack on top of other income to help cover care. We will cover veterans benefits in a future episode.
Fourth, talk to the Health Insurance Counseling and Advocacy Program, or HICAP, which the California Department of Aging (CDA) funds in every county. HICAP counselors are free, trained, and neutral. They do not sell anything. They will sit with you and walk through your parent's specific situation, including dual eligibility, Medicare Advantage choices, and Part D plan picks. They are the closest thing California has to an unbiased guide through this maze.
How to apply for Medi-Cal in California
You apply through your county. Every California county has a Medi-Cal eligibility office, run as part of the county social services or human services agency. The California Department of Health Care Services sets the statewide rules. The counties run the front door.
You can apply in three ways. Online through BenefitsCal, by mail with a paper application, or in person at the county office. Covered California, the state's Affordable Care Act marketplace, can also start a Medi-Cal application, but for seniors over 65, the BenefitsCal or county route is usually cleaner, because the senior categories of Medi-Cal have different documentation requirements than the under-65 categories Covered California handles.
You will need documentation. Proof of identity, proof of California residency, proof of income, and information about any health insurance your parent already has, which for most seniors means their Medicare card and any Medigap or Medicare Advantage plan paperwork. Because the asset limit was removed for most non-MAGI categories in 2024, you generally do not need to inventory every bank account the way families did a decade ago, but some specialized programs within Medi-Cal still ask for asset information. When in doubt, bring more than you think you need.
The county has to make a decision within 45 days for most applications, or 90 days if a disability determination is required. If your parent is in a hospital or nursing facility right now, ask the social worker about expedited processing. It exists. It is not always offered unless you ask.
If your parent is denied, they have the right to appeal. The notice will tell you how. Do not let the deadline pass. Justice in Aging publishes free advocate-level guides on Medi-Cal eligibility, dual eligibility, and the appeals process, and those guides are worth reading even if you never file an appeal yourself.
Where Covered California and the Affordable Care Act fit
Covered California is the state's Affordable Care Act marketplace. It is where Californians under 65 buy private health insurance, often with federal subsidies. Once your parent turns 65 and is eligible for Medicare, they generally do not use Covered California for their primary coverage. They use Medicare. The exceptions matter: in the months around a 65th birthday, a senior may transition between marketplace coverage and Medicare, and the timing affects subsidies and Medicare late-enrollment penalties. A younger spouse or adult child in the same household may stay on a Covered California plan after the senior switches. The systems are connected on the back end even when they feel disconnected on the front end.
What to do this week
Not in a year. Not when things calm down. This week.
- Find your parent's red, white, and blue Medicare card. Photograph the front and the back. Save the image somewhere you can find it at two in the morning when a hospital is asking for the number.
- Find out whether your parent already has Medi-Cal. Ask them, then verify by calling the county Medi-Cal office or checking their BenefitsCal account if they have one. Many seniors enrolled in Medi-Cal years ago and forgot they did.
- If your parent is near the Medi-Cal income limit and not enrolled, request an application from the county office. Even if you are unsure they qualify, request it. The asset rules are different now than they were five years ago, and your old assumption may be wrong.
- Find your county's Health Insurance Counseling and Advocacy Program office through the California Department of Aging website. Save the phone number in your phone under HICAP. When you need a neutral person to explain a notice, you will not have to search for it in a panic.
- If your parent is in a hospital or skilled nursing facility right now, ask the discharge planner three questions in writing. What is the discharge date? What level of care is being recommended? Who is paying for it after Medicare stops paying? Get the answers on paper.
- Do not sign anything from a Medicare Advantage marketer who knocks on the door or calls cold. The Centers for Medicare and Medicaid Services has strict rules about that kind of contact, and most of it does not serve your parent. If your parent wants to consider Medicare Advantage or a D-SNP, do it through HICAP or during the official enrollment windows.
The California Care Compass editorial take
The hardest part of this story is not the rules. It is the assumption that someone, somewhere, has already figured it out for your family. No one has. Medicare and Medi-Cal were built in the same federal law in 1965, by people who could not have imagined how long Americans would live or how expensive the last decade of life would become. The two programs do not interlock cleanly. They overlap in some places, leave gaps in others, and the gaps are exactly where families fall through.
California has done more than most states to soften those gaps. The 2024 removal of the asset limit, the CalAIM coordination work, In-Home Supportive Services, Community-Based Adult Services, the Assisted Living Waiver. These programs exist because the state, slowly and imperfectly, has decided that aging at home and in community is worth funding. The federal Medicare program has not made that decision. California has. That is the actual reason it matters that you are a California family. Your state has built more ladders into the gap than most.
What this means for you, tonight, at the kitchen table: do not believe anyone who tells you Medicare is going to cover this. Do not believe anyone who tells you Medi-Cal is only for people who are destitute. Do not believe anyone who tells you it is too late to apply. Call HICAP. Call the county. Ask three times if the first answer does not make sense. The system rewards families who keep asking, and you are not behind. You are exactly where every other family is when this starts.