Can You Have Medi-Cal and Another Health Insurance?

Yes, you can have Medi-Cal and other health insurance in California at the same time. Picking up a job-based plan, joining a spouse’s or parent’s policy, buying a marketplace plan, or carrying Medicare does not end your Medi-Cal enrollment, as long as your household income still meets the program’s limits. What state law does require is that you tell your county about the other coverage within 10 days, and that your other plan pay first on every claim.

Why a Second Plan Doesn’t End Your Eligibility

Medi-Cal eligibility turns on income, not on whether you also hold private insurance. Federal law directs every state Medicaid program to find beneficiaries who have other coverage and pursue those insurers for payment, but nothing in that mandate kicks the beneficiary off public coverage.¹ The state wants your private insurer paying first so Medi-Cal only has to cover what’s left.

For 2026, most adults qualify for Medi-Cal with household income at or below 138 percent of the federal poverty level: $1,836 a month for a single person or $3,795 a month for a family of four.² Taking an employer plan does not by itself push you past that limit. A big raise might, but the insurance card doesn’t.

The 10-Day Reporting Rule

California’s Welfare and Institutions Code gives you 10 days to notify your county welfare department after you gain any other health coverage. That covers employer plans, a spouse’s or parent’s policy, COBRA, and marketplace plans. The clock starts the day the new coverage takes effect, not the day the card arrives.³

Deliberately failing to report is a misdemeanor. So is using Medi-Cal for a service your other insurance covers without billing that insurer first.³ Reporting also helps you on the practical side: once the state has your other plan on file, providers bill in the right order and you avoid denials, delays, and the appearance that you were trying to hide something.

How to Report Other Coverage

Before you contact the state, gather the carrier name, the type of coverage (medical, dental, vision), the policy and group numbers from the card, and the effective date. If the policy belongs to someone else, you also need the subscriber’s name, Social Security number, and relationship to you.

Three ways to submit it:

Report through the BenefitsCal online portal at BenefitsCal.ca.gov. The electronic timestamp confirms you reported on time.
Call or visit your county social services office. A caseworker can enter the information directly into the eligibility system.
Mail the Health Insurance Questionnaire (DHS 6155) to the DHCS Health Insurance Section in Sacramento. The form is available from the Department of Health Care Services website or any county office.⁴

Keep a copy of whatever you submit. The state’s confirmation notice can take several weeks, and in the meantime your copy is proof you met the 10-day deadline.

How the Two Plans Pay Together

When you carry both Medi-Cal and private insurance, your private plan is always the primary payer. The provider bills your commercial insurer first. Medi-Cal only pays after the private plan has processed the claim.⁵ This “payer of last resort” rule is written into both federal and California law.

In practice: you see a provider, the provider submits the claim to your private insurer, and the insurer pays what your plan terms require. The deductible, the copay, or anything your plan refused to cover then goes to Medi-Cal. If the service is a Medi-Cal benefit, Medi-Cal picks up the remaining cost up to its own payment rate. For you, most out-of-pocket costs disappear.

You Shouldn’t Get a Balance Bill

Providers enrolled in Medi-Cal must accept the combined payment from your private insurer and Medi-Cal as payment in full. They cannot bill you for the leftover balance. Federal regulations require Medicaid providers to accept the state’s payment plus any permissible cost-sharing as the complete payment for a service.⁶ If a provider sends you a balance bill anyway, that bill is not legitimate; contact your county office or the Department of Health Care Services.

Where It Gets Complicated

Coordination runs smoothly when your provider accepts both plans. The problem is the specialist in your private plan’s network who doesn’t participate in Medi-Cal. The specialist bills your private insurer normally, but Medi-Cal may not pay the remainder because the provider isn’t enrolled in Medi-Cal. Before you book an appointment, check that any specialist accepts Medi-Cal too. Otherwise you could end up responsible for costs neither plan covers.

Medicare Plus Medi-Cal

The most common dual-coverage situation in California is Medicare plus Medi-Cal, and people with both are often called “dual eligibles” or “Medi-Medis.”⁷ This typically applies to adults 65 and older or people with disabilities who qualify for Medicare and whose income is low enough for Medi-Cal.

The payment order is the same as with private insurance: Medicare pays first, Medi-Cal pays second. Medicaid never pays before Medicare.⁸ For dual eligibles, Medi-Cal often covers Medicare premiums, deductibles, and copayments that would otherwise come out of pocket. Full dual eligibles can also join a Medicare Advantage plan, including a Dual Eligible Special Needs Plan built for this population.⁷

When Medi-Cal Will Pay Your Private Premium

California runs a voluntary program called Health Insurance Premium Payment (HIPP) that reimburses you for the premiums on your private plan. The reasoning is practical: if paying your monthly premium costs the state less than treating your condition directly through Medi-Cal, the state keeps you on the private plan and picks up the premium.⁹

To qualify, you need to meet all of these:

You have full-scope Medi-Cal. Restricted or partial Medi-Cal does not qualify.
You were already covered under a private plan when you enrolled in Medi-Cal, whether through an employer, COBRA, or the marketplace.
You have a medically confirmed condition covered by your private plan, and you received treatment for it within 90 days of applying.
You are in fee-for-service Medi-Cal, not a managed care plan.
Keeping you on the private plan is cheaper for the state than paying directly.

HIPP is not available if you have Medicare, TRICARE, or Medi-Cal managed care.⁹ It’s worth asking about if you recently qualified for Medi-Cal and want to stay with the specialists in your existing network while being treated for an ongoing condition. Contact DHCS directly to apply.

When Your Income Rises Above the Limit

A new job often brings a raise alongside the insurance card, and if your household income crosses 138 percent of FPL, you will eventually lose Medi-Cal at your next redetermination. It doesn’t happen overnight. Your Medi-Cal stays active until the state formally redetermines eligibility, but you should plan ahead.

Covered California handles the transition. Once the state determines you no longer qualify, Covered California sends an eligibility notice and often auto-enrolls you in the lowest-cost Silver marketplace plan to prevent a gap. You then have 90 days from your last day of Medi-Cal to confirm that plan, pick a different one, or cancel.¹⁰ Miss the window and you can be stuck without coverage until the next open enrollment.

One quiet trap: you cannot receive Affordable Care Act premium tax credits for any month you are eligible for Medi-Cal.¹¹ The subsidies only start once your Medi-Cal eligibility formally ends. If you buy a marketplace plan while still enrolled in Medi-Cal, that marketplace plan won’t carry any subsidy. Report income changes promptly so the handoff happens cleanly and the tax credits start the moment you are entitled to them.

1
Office of the Law Revision Counsel. 42 USC 1396a – State Plans for Medical Assistance
2
Covered California. Program Eligibility by Federal Poverty Level for 2026
3
California Legislative Information. California Code WIC 14000-14029.5
4
Department of Health Care Services. Medi-Cal Eligibility Procedures Manual Letter No. 155
5
Department of Health Care Services. APL 22-027 – Third Party Liability and Cost Avoidance
6
eCFR. 42 CFR 447.15 – Acceptance of State Payment as Payment in Full
7
Department of Health Care Services. Full and Partial Dual Eligibility
8
Medicare. Medicare Coordination of Benefits Getting Started
9
Department of Health Care Services. Cost Avoidance / Health Insurance Premium Payment (HIPP)
10
Covered California. You Don’t Qualify for Medi-Cal Anymore – Now What
11
Internal Revenue Service. Premium Tax Credit (PTC) Overview