You already know you can depend on your spouse, but can you rely on their private healthcare plan to be there for you? If your spouse is still working, you might be confused about your needs as you become eligible for Medicare. Read on to see what rules to follow with regards to creditable coverage, including when to switch from your spouse's private health insurance to Medicare.
The first rule of Medicare and private insurance is an easy one: if you’ve got creditable coverage, you don't need to sign up for Medicare. For a deep dive on creditable coverage, check out our article here Fair Square Medicare
Once you’ve answered the first question, consider whether your insurance will pay primary or secondary.
If your private insurance is paying primary to Medicare
If Medicare pays primary, your health insurance pays secondary and is left to cover whatever Medicare will not. People often elect to sign up for Part A of Medicare
When your spouse's company has 20 or more employees, that’s considered a Group Health Plan (GHP), and your insurance will pay primary. In a Small Group Health Plan (SGHP) with less than 20 employees, your insurance will pay secondary to Medicare, so you need to sign up for Parts A, B, and likely D if Medicare is meant to pay primary.
Note: If you are under 65 and eligible for Medicare due to a disability, the number used to determine primary vs. secondary coverage jumps up to 100 employees. A plan with over 100 employees is considered a Large Group Health Plan (LGHP).
The way your Medicare plan and your GHP might work together to share costs is called the Coordination of Benefits. There are systems in place that work to ensure your healthcare claims are being billed in the right order, but it’s still important for you to know how to apply these rules to your situation in case any claims are disputed. If you have any questions about the Coordination of Benefits for your situation, you can call us at 1-888-376-2028, and you can also call the Benefits Coordination and Recovery Center (BCRC) at 1-855-798-2627.
The same rules apply; if you have creditable coverage through your spouse's private insurance, then you do not need to sign up for a Part D Prescription Drug plan. Other Medicare beneficiaries might incur a Late Enrollment Penalty for either Part B or Part D
Medicare also pays primary to retirement plans.
If you’ve got a retirement plan, your spouse’s GHP, and Medicare, it pays as follows:
1. GHP
2. Medicare
3. Retirement Plan
If your retirement plan includes creditable drug coverage, you have a special enrollment period of 63 days after your coverage ends.
Suppose you have creditable coverage and your plan suits your needs. In that case, you do not need to enroll in Medicare Part B. Talk with your health insurance plan provider for more details about your specific circumstances and your coordination of benefits. For all your Medicare-related questions, we have a team of experts ready to help you get the coverage you need. Give Fair Square Medicare a call at 888-376-2028.

How Much Does Medicare Part B Cost in 2025?
Dec 27, 2022

Medicare 101
May 20, 2020

How Can I Get a Replacement Medicare Card?
Aug 14, 2023

Does Medicare Pay for Bunion Surgery?
Nov 29, 2022

Can Medicare Advantage Plans be Used Out of State?
Jun 12, 2023

Does Medicare cover Hyoscyamine?
Nov 30, 2022

2024 Cost of Living Adjustment
Nov 13, 2023

Does Medicare Cover Stair Lifts?
Nov 18, 2022

When to Choose Medicare Advantage over Medicare Supplement
Jun 7, 2023

Does Medicare Cover SI Joint Fusion?
Nov 28, 2022

Explaining the Different Enrollment Periods for Medicare
Feb 3, 2023

Medigap vs. Medicare Advantage
May 25, 2020

Does Medicare Cover Macular Degeneration?
Nov 30, 2022

10 Top Medicare Supplement (Medigap) Companies for 2025
Jul 14, 2025

How is Medicare Changing in 2025?
Dec 21, 2022

2025 Medicare Price Changes
Oct 30, 2023

Does Medicare Cover Zilretta?
Nov 28, 2022

What to Do When Your Doctor Doesn't Take Medicare
Feb 24, 2023
13 Best Ways for Seniors to Stay Active in Indianapolis
13 Best Ways for Seniors to Stay Active in Philadelphia
14 Best Ways to Stay Active in Charlotte
2024 Fair Square Client Retention and Satisfaction Report
Building the Future of Senior Healthcare
Can I Change Medicare Advantage Plans Any Time? | Medicare Plans
Can I Have Two Primary Care Physicians?
Can I Laminate My Medicare Card?
Can Medicare Advantage Plans Deny Coverage for Pre-Existing Conditions?
Costco Pharmacy Partners with Fair Square
Do You Need Books on Medicare?
Does Medicare Cover a Spinal Cord Stimulator?
Does Medicare Cover Air Purifiers?
Does Medicare Cover Boniva?
Does Medicare Cover Cala Trio?
Does Medicare Cover Cardiac Ablation?
Does Medicare Cover Cartiva Implants?
Does Medicare Cover Cataract Surgery?
Does Medicare Cover Chiropractic Visits?
Does Medicare Cover Compounded Medications?
Does Medicare Cover Cosmetic Surgery?
Does Medicare Cover Driving Evaluations?
Does Medicare Cover Exercise Physiology?
Does Medicare Cover Hearing Aids?
Does Medicare Cover Ilumya?
Does Medicare Cover Incontinence Supplies?
Does Medicare Cover Iovera Treatment?
Does Medicare Cover Lipoma Removal?
Does Medicare Cover Medical Marijuana?
Does Medicare Cover Mental Health?
Does Medicare Cover Mouth Guards for Sleep Apnea?
Does Medicare Cover Piqray?
Does Medicare Cover PTNS?
Does Medicare Cover Service Animals?
Does Medicare Cover the Urolift Procedure?
Does Medicare Cover the WATCHMAN Procedure?
Does Your Medicare Plan Cover B12 Shots?
Everything About Your Medicare Card + Medicare Number
Explaining IRMAA on Medicare
Finding the Best Dental Plans for Seniors
How Do Medicare Agents Get Paid?
How Do Medigap Premiums Vary?
How Does Medicare Cover Colonoscopies?
How Medicare Costs Can Pile Up
How Much Does Medicare Part A Cost in 2025?
How Much Does Open Heart Surgery Cost with Medicare?
How Much Does Rexulti Cost with Medicare?
How Often Can I Change Medicare Plans?
How to Apply for Medicare?
Is Displacement Affecting Your Medicare Coverage?
Is Emsella Covered by Medicare?
Is the Shingles Vaccine Covered by Medicare?
Is Vitrectomy Surgery Covered by Medicare?
Medicare Advantage Plans for Disabled People Under 65
Medicare Consulting Services
Medicare Guaranteed Issue Rights by State
Medicare Savings Programs in Kansas
Medigap Plan N vs. Plan G — Which One Fits You in 2025?
Moving? Here’s What Happens to Your Medicare Coverage
Saving Money with Alternative Pharmacies & Discount Programs
Seeing the Value in Fair Square
The Easiest Call You'll Ever Make
Top 10 Physical Therapy Clinics in San Diego
What Are Medicare Part B Excess Charges?
What is a Medicare Beneficiary Ombudsman?
What is the 8-Minute Rule on Medicare?
What Is the Medicare Birthday Rule in Nevada?
What is the Medicare ICEP?
What To Do If Your Medicare Advantage Plan Is Discontinued
Which Medigap Policies Provide Coverage for Long-Term Care?
Why Is Medicare So Confusing?
Why You Should Keep Your Medigap Plan
Get the Fair Square Bulletin
Medicare savings tips, helpful guides, and more.
Virgil Insurance Agency, LLC (DBA Fair Square Medicare) and www.fairsquaremedicare.com are privately owned and operated by Help Button Inc. Medicare supplement insurance plans are not connected with or endorsed by the U.S. government or the federal Medicare program. This is a solicitation of insurance. A licensed agent/producer may contact you. Medicare Supplement insurance is available to those age 65 and older enrolled in Medicare Parts A and B and, in some states, to those under age 65 eligible for Medicare due to disability or End-Stage Renal disease. Virgil Insurance Agency is a licensed and certified representative of Medicare Advantage HMO, HMO SNP, PPO, PPO SNP and PFFS organizations and stand-alone PDP prescription drug plans. Each of the organizations we represent has a Medicare contract. Enrollment in any plan depends on contract renewal. The plans we represent do not discriminate on the basis of race, color, national origin, age, disability, or sex. Plan availability varies by region and state. For a complete list of available plans please contact 1-800-MEDICARE (TTY users should call 1-877-486-2048), 24 hours a day/7 days a week or consult www.medicare.gov. © 2025 Help Button Inc
We do not offer every plan available in your area. Any information we provide is limited to those plans we do offer in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options.
MULTIPLAN_FairSquareMedicare_01062022_M
Fair Square Medicare
