I'm a military retiree with TRICARE For Life - do I still need to sign up for Medicare Part B?

Answered by 4 licensed agents

Yes. If you are a military retiree and eligible for premium-free Medicare Part A, you generally must also have Medicare Part B to keep TRICARE For Life.

TRICARE For Life works as Medicare-wraparound coverage. Medicare generally pays first for Medicare-covered services, and TRICARE For Life may then pay eligible remaining costs. Your TRICARE For Life coverage normally begins automatically once you have both Medicare Part A and Part B.

You will need to pay the Medicare Part B premium. If you decline Part B, drop it, or stop paying the Part B premium, you generally lose your TRICARE coverage.

One important difference from many other Medicare situations is prescription coverage. TRICARE For Life includes the TRICARE Pharmacy Program, so you generally do not need a separate Medicare Part D plan simply to have prescription coverage.

If you are approaching 65, make sure your Medicare Part A and Part B effective dates are lined up so there is no break between your current TRICARE coverage and TRICARE For Life.

Answered by Jeremy Harkins on September 25, 2026

Broker Licensed in TN, AR, CA & 5 other states

Answered by Jeremy Harkins Medicare Insurance Agent
Yes. If you want to keep TRICARE For Life, you have to have Medicare Part A and Part B. TRICARE For Life only works alongside Medicare. If you're entitled to Part A and you don't enroll in Part B, you generally lose your TRICARE coverage.

How it works together: Medicare pays first, and TRICARE For Life pays second. For services both cover, that usually means little or nothing out of pocket for you. That's why most TRICARE For Life members don't need a Medicare Supplement. You'll still pay the Part B premium ($202.90 a month in 2026, or more with higher income). There's no premium for TRICARE For Life itself.

What you don't need:

Part D. TRICARE pharmacy coverage counts as creditable drug coverage, so you won't get a late penalty for skipping Part D.

Medigap. In most cases it would just duplicate coverage you already have.

Medicare Advantage. Usually unnecessary too. If you're thinking about it, check with TRICARE first about how it would coordinate.

A few things to watch:

If your sponsor is still on active duty, you don't have to enroll in Part B until the sponsor retires. Make sure you sign up before that happens to avoid a coverage gap.

If you're under 65 and get Medicare because of a disability, the same Part B rule applies.

If you missed Part B enrollment or your TRICARE eligibility lapsed, contact Social Security and TRICARE right away. There are special rules for military families that may help you get back on track without a gap.

You can confirm your eligibility through DEERS or by calling TRICARE For Life customer service before you make any changes.

Answered by Caroline Johnson on October 1, 2026

Agent Licensed in TX

Answered by Caroline Johnson Medicare Insurance Agent
Yes, you must sign up for and keep medicare part B to maintain your Tricare for life.

Tricare and part B work together.

Answered by Shawn Yeatts on October 1, 2026

Agent Licensed in CA

Answered by Shawn Yeatts Medicare Insurance Agent
Yes, it is so important to sign up for part B because you can’t get Truncate for life without getting Part B. Thank you for serving

Answered by Pamela Masters on September 30, 2026

Broker Licensed in NC, OH, TN & VA

Answered by Pamela Masters Medicare Insurance Agent

Tags: Eligibility Enrollment Periods Medicare Part B

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