The Medicare Mistake That Cost a Washington Teacher Her SEBB Coverage

Karen, a 65-year-old Washington State teacher, thought she had everything figured out for retirement. She'd had health coverage for 28 years and assumed she could just keep her coverage when she retired at the end of the school year.
Three months into retirement, Karen got a letter that made her stomach drop. SEBB/PEBB was terminating her retiree coverage because she hadn't enrolled in Medicare Parts A and B. The cost? She'd have to pay COBRA premiums while waiting to re-enroll.
All because she didn't understand one critical rule: PEBB/SEBB retirees must enroll in Medicare Parts A and B to keep their health coverage.
If you're a Washington State public employee approaching 65 or retirement, you're facing a Medicare enrollment decision that could save—or cost—you thousands. Here's the critical information about navigating this transition without losing coverage or paying unnecessary penalties.
The Medicare-PEBB Rules Every Pre-Retiree Must Know
1. Medicare Enrollment Is Mandatory for PEBB Retiree Coverage - You and your covered dependents are required to enroll in both Medicare Part A and Part B as soon as eligible to stay enrolled in a PEBB retiree health plan¹. No exceptions.
2. Apply 3 Months Before You Turn 65 - Social Security is currently experiencing longer processing times for Medicare enrollment requests. PEBB strongly encourages applying three months before your Medicare start date². Missing this window can create coverage gaps.
3. Medicare Becomes Primary, PEBB Becomes Secondary - Once you enroll in Medicare, Medicare becomes primary coverage, and PEBB medical becomes secondary coverage³. This coordination reduces your out-of-pocket costs significantly.
4. PEBB COBRA Bridge Coverage Is Available - If you're unable to provide proof of Medicare enrollment due to Social Security delays, you can enroll in PEBB COBRA to ensure coverage until you can provide proof of Medicare⁴. Coverage becomes retroactive once Medicare proof is provided.
5. Working Past 65 Changes the Rules - You're not required to enroll in Medicare while still working if your employer has 20 or more employees. PEBB medical remains primary coverage with Medicare as secondary if you choose to enroll⁵.
Your "Coverage Protection" Strategy
Step 1: Calculate Your Medicare Timeline
Here's where most PEBB members make their first mistake: they think Medicare enrollment is automatic.
Real scenario: Fire Captain Mike turns 65 in July and plans to retire in August. He needs to apply for Medicare by April (3 months before) to ensure his coverage starts July 1st.
The timing breakdown:

• April: Apply for Medicare Parts A and B
• July 1: Medicare coverage begins
• August 1: Retirement date and PEBB retiree coverage begins
• Medicare coordination: Seamless transition with no gaps

Your action item: Mark your calendar 90 days before your 65th birthday or retirement date, whichever comes first.
Step 2: Understand Your Coverage Coordination Options
Once you have both Medicare and PEBB retiree coverage, you're not paying double for duplicate coverage—you're getting enhanced benefits.
How the coordination works:

• Medicare pays first (primary)
• PEBB retiree plan pays second (secondary)
• You typically pay less out-of-pocket than with either plan alone

Step 3: Navigate the Social Security Delays
Here's something most don't know: Social Security processing delays can jeopardize your PEBB retiree coverage.
The safety net strategy: If you can't get Medicare proof in time, enroll in PEBB COBRA as temporary bridge coverage.
Real numbers:

• PEBB COBRA monthly premium: Varies by plan selected
• Length of coverage: Until Medicare proof is provided
• Retroactive adjustment: PEBB refunds overpayments once Medicare starts

Critical timeline: You have 60 days from your last day of work to elect COBRA if needed.
Three Scenarios for Different Situations
The "Standard Retiree" (Most common) Retire at 65, enroll in Medicare Parts A and B three months before birthday, transition seamlessly to PEBB retiree coverage with Medicare coordination.
The "Early Retiree" (Age 62-64) Retire before Medicare eligibility, continue PEBB employee coverage through COBRA until 65, then switch to Medicare + PEBB retiree coverage.
The "Working Senior" (Working past 65) Stay on PEBB employee coverage as primary, optionally enroll in Medicare as secondary, or delay Medicare until retirement (must enroll within 8 months of stopping work).
Master Class Case Study: Police Sergeant Linda, age 64, retires December 31st and turns 65 February 15th.
Her timeline:

• October: Applies for COBRA continuation (bridge coverage)
• November: Applies for Medicare (3 months before 65th birthday)
• February 15: Medicare Parts A and B begin
• February 15: Switches from COBRA to PEBB retiree coverage with Medicare coordination

Her benefit: Avoided coverage gaps and Medicare late enrollment penalties by using COBRA as bridge coverage until Medicare coordination began.
Critical deadlines to remember:

• 90 days before age 65: Apply for Medicare
• 60 days after last day of work: COBRA election deadline
• 8 months after stopping work: Medicare enrollment deadline if you delayed

Don't let Medicare enrollment confusion jeopardize your PEBB retiree coverage or result in lifetime Medicare penalties. The key is understanding that PEBB retiree coverage and Medicare work together as coordinated benefits.
This strategy works best when coordinated with your overall retirement income planning, pension timing, and Social Security optimization decisions.
Bottom line: Medicare enrollment isn't optional for PEBB retirees—it's required. When timed correctly, Medicare and PEBB work together as coordinated benefits. Missing the deadlines can result in coverage loss and lifetime Medicare penalties.
Critical Resources

1. Medicare & PEBB Benefits While Employed
2. PEBB Medicare and Turning Age 65
3. Social Security Medicare Enrollment
4. PEBB Retiree Eligibility Requirements
5. Washington State Health Insurance Benefits Advisors (SHIBA): 1-800-562-6900