Medicare Advantage at Corewell Health.
Which Medicare Advantage plans work with Corewell, how Medigap and Original Medicare access compares, and our advisor's tips on choosing a plan that keeps your Corewell providers in-network.
About Corewell Health
Founded in 2022 (merger of Beaumont Health and Spectrum Health) and headquartered in Grand Rapids & Royal Oak, Michigan, Corewell operates across Michigan. Largest health system in Michigan with 22 hospitals, with national strength in cardiology, cancer, women's health, neuroscience, and pediatrics.
Medicare Advantage carriers that contract with Corewell
Priority Health (Corewell's own MA plan), Blue Cross Blue Shield of Michigan, Humana, UnitedHealthcare/AARP, Aetna.
Priority Health (now Corewell-owned) is the natural Medicare Advantage choice for deep Corewell network access. BCBS Michigan also has broad Corewell coverage. Beaumont/Corewell East and Spectrum/Corewell West network can vary.
Original Medicare with Medigap = full Corewell access
If keeping Corewell in-network is non-negotiable, the simplest path is Original Medicare (Parts A and B) plus a Medigap plan plus a standalone Part D plan. Medigap plans don't have networks — they pay out-of-pocket costs at any provider that accepts Medicare.
Corewell accepts Medicare. So: Original Medicare + Medigap means you can see any Corewell doctor, in any Corewell hospital, with no referrals or pre-authorizations.
The trade-off: Medigap costs $100-$250/month (versus often $0 for Medicare Advantage), and standalone Part D adds $15-$70/month. But you get total provider freedom and predictable out-of-pocket costs.
How to verify your Corewell doctor is in your Medicare Advantage plan
- Call the plan member services line with your doctor's full name and NPI number. Ask: "Is Dr. [Name], NPI [#####], in-network for [plan name] for 2027?"
- Check the plan's online provider directory. Search by full name. Verify the address matches your Corewell location.
- Call your Corewell doctor's office. Ask the receptionist which Medicare Advantage plans they accept. Verify both that the practice is in-network and that the specific physician is in-network — they're sometimes different.
- If you have specialists, repeat for each one. Network status varies physician-by-physician within the same hospital system.
Free 14-minute Medicare review.
A licensed advisor reviews your specific Corewell providers, your prescriptions, and finds the Medicare Advantage or Medigap option that keeps your care in-network. Free, no obligation.
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