NC TSERS Medicare Enrollment: Part B Timing and State Health Plan Integration

The Medicare Transition Every TSERS Retiree Faces at 65

If you retire from TSERS before age 65, the State Health Plan automatically enrolls you in the active plan you had before retirement, or the Standard PPO administered by Aetna if you did not have active-plan coverage. The non-Medicare options include the Standard PPO and Plus PPO.

Then you turn 65, and everything shifts. Medicare becomes your primary insurer, and the State Health Plan restructures your coverage around it. Missing the enrollment window or making the wrong plan choice at this stage can cost hundreds of dollars a month in premiums you did not need to pay.

Enrolling in Medicare Parts A and B

You must enroll in both Medicare Part A (hospital coverage) and Medicare Part B (medical coverage) through the Social Security Administration. If you are already receiving Social Security benefits, enrollment in Part A is automatic at 65. If you are not drawing Social Security, you need to actively enroll during your Initial Enrollment Period — the seven-month window centered on the month you turn 65.

Part A is premium-free for most people with 40 or more quarters of Social Security–covered employment. TSERS members pay Social Security (FICA) taxes on covered earnings, so most qualify.

Part B carries a monthly premium ($202.90 standard in 2026, adjusted by income). You must enroll in Part B to maintain your State Health Plan retiree coverage — the SHP requires it. If you delay Part B enrollment past your Initial Enrollment Period without qualifying coverage, you will face a late-enrollment penalty of 10% for each full 12-month period of delay, generally added to your monthly Part B premium for as long as you have Part B.

How the State Health Plan Changes at 65

Once you have Medicare Parts A and B, the State Health Plan moves you out of the Aetna PPO plans and into Medicare-integrated options:

Humana Group Medicare Advantage PPO Base Plan — For eligible members who are already retired and become Medicare-eligible, the State Health Plan automatically enrolls them in the Base Plan. For those who qualify for fully state-paid coverage (hired before October 1, 2006 with 5+ years of service, or hired 2006–2020 with 20+ years), the Base Plan has a $0 monthly retiree premium. Medicare is the primary payer, and Humana processes claims through the group Medicare Advantage structure.

Humana Group Medicare Advantage PPO Enhanced Plan — Same structure as the Base Plan but with lower prescription copays and expanded supplemental benefits. This plan carries an additional monthly retiree premium on top of your Medicare Part B cost.

70/30 PPO Plan (Aetna) — A secondary coverage option where Medicare pays first and Aetna picks up secondary claims. This plan also requires a monthly retiree premium. Retirees who enroll in an individual Medicare Advantage plan or Part D plan outside the State Health Plan are automatically shifted to this 70/30 secondary plan.

The Enrollment Window You Cannot Miss

If you are already retired and approaching 65, the State Health Plan says it will send written notice about 80 to 90 days before Medicare becomes effective and automatically enroll eligible retirees in the Humana Base Plan. If you want to change plans, notify the State Health Plan no later than 30 days before Medicare coverage becomes effective. For initial retiree health coverage, complete enrollment through eBenefits within 30 days before or after your effective retirement date; confirm your deadline with the State Health Plan if you are Medicare-eligible when you retire.

If your spouse is covered as a dependent on your State Health Plan, their transition to Medicare at age 65 is a separate event. They enroll in Medicare on their own timeline, and the SHP adjusts their coverage independently.

What This Means for Your Retirement Budget

The shift to Medicare at 65 usually reduces your total healthcare spending if you qualify for state-subsidized retiree coverage. The Humana Base Plan at $0 retiree premium, combined with Medicare Part B, replaces the higher-cost Aetna PPO premiums. But if you are in a hire-date tier that requires you to pay part or all of your retiree premiums (hired 2006–2020 with fewer than 20 years of service), Medicare Part B becomes an additional cost layer rather than a replacement.

The NC TSERS Retirement Guide maps every hire-date tier against the Medicare transition, so you can project your healthcare costs before and after 65 without sorting through the SHP's separate documents for each plan.

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