Corewell Health, Henry Ford & Michigan Medicine 2027 Guide
How Metro Detroit, Royal Oak, Troy, Ann Arbor, Grand Rapids, and Lansing residents can verify Corewell Health, Henry Ford Health, Michigan Medicine, and Trinity Health networks for 2027.
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Michigan's Major Hospital Consolidations & 2027 Networks
Hospital systems across Southeast, West, and Mid-Michigan have undergone major consolidations that directly affect 2027 ACA Marketplace and Medicare Advantage networks:
- Corewell Health combines the former Beaumont Health system in Southeast Michigan (Corewell Health William Beaumont University Hospital in Royal Oak, Troy, Dearborn, Grosse Pointe, Farmington Hills, Trenton, Taylor, and Wayne) with the former Spectrum Health system in West & Southwest Michigan (Corewell Health Butterworth & Blodgett Hospitals in Grand Rapids, Helen DeVos Children's Hospital, and Corewell Health Lakeland in St. Joseph).
- Henry Ford Health operates Henry Ford Hospital in Detroit, Henry Ford West Bloomfield, Macomb, Wyandotte, and Jackson, and has integrated the former Ascension Southeast Michigan hospitals (including St. John, Providence Southfield & Novi, Macomb-Oakland, and Genesys in Grand Blanc).
- University of Michigan Health (Michigan Medicine) anchors academic care in Ann Arbor (University Hospital, C.S. Mott Children's Hospital, Rogel Cancer Center) alongside UM Health-Sparrow in Lansing and UM Health-West in Wyoming/Grand Rapids.
2027 Michigan Hospital & Carrier Network Matrix
| Michigan Health System | Primary Campuses | 2027 ACA Marketplace Access | 2027 Medicare Access |
|---|---|---|---|
| Corewell Health (East & West) | Royal Oak, Troy, Dearborn, Grosse Pointe; Grand Rapids Butterworth, Blodgett & Helen DeVos Children's | Priority Health, Blue Care Network (BCN) / BCBSM, select Molina and Ambetter tiers | Original Medicare + Medigap, Priority Health Medicare, BCBSM Medicare Advantage |
| Henry Ford Health (incl. former Ascension SE MI) | Henry Ford Detroit, West Bloomfield, Macomb, Jackson, St. John, Providence Southfield/Novi, Genesys | HAP (Health Alliance Plan), BCN / BCBSM, select Marketplace HMO sub-networks | Original Medicare + Medigap, HAP Medicare Advantage, BCBSM, and select PPOs |
| Michigan Medicine (UM Health) | Ann Arbor Academic Medical Center, UM Health-Sparrow (Lansing), UM Health-West (Kent County) | BCN / BCBSM, Priority Health, Physicians Health Plan (PHP) / regional tiers; verify Ann Arbor referral rules | Original Medicare + Medigap and contracted Medicare Advantage plans |
| Trinity Health Michigan & McLaren Health Care | Trinity Health Ann Arbor, Livonia, Oakland (Pontiac), Grand Rapids, Muskegon; McLaren Flint, Macomb, Oakland, Greater Lansing | BCN / BCBSM, McLaren Health Plan, Priority Health, Ambetter, Molina | Original Medicare + Medigap and participating regional Medicare Advantage plans |
3 Steps for Michigan Enrollees Before December 15
- Check Insurer-Owned Hospital Alignment (Priority Health, HAP & McLaren): In Michigan, several major insurers are affiliated with hospital systems (Priority Health with Corewell Health, HAP with Henry Ford Health, and McLaren Health Plan with McLaren). Verify whether a narrow HMO covers competing hospital systems in your county.
- Verify Former Ascension Michigan Doctors Under Henry Ford Health: If your doctor practiced with Ascension Medical Group in Oakland, Macomb, Wayne, or Genesee County, check their updated Henry Ford Health tax ID on 2027 carrier directories.
- Confirm Ann Arbor Tertiary Referral Access: Metro Detroit and Mid-Michigan residents who use Michigan Medicine or Rogel Cancer Center in Ann Arbor should confirm out-of-county referral rules before selecting a single-county HMO.
Frequently Asked Questions
Which 2027 Michigan ACA Marketplace plans cover Corewell Health in Metro Detroit and Grand Rapids?
Priority Health (Corewell Health's integrated health plan), Blue Cross Blue Shield of Michigan / Blue Care Network, and select Molina, McLaren, or Ambetter sub-networks cover Corewell Health Beaumont and Grand Rapids campuses, though county-specific HMO rules apply.
Are former Ascension Southeast Michigan hospitals now part of the Henry Ford Health network?
Yes. Following the Henry Ford Health joint venture integration of former Ascension Southeast Michigan facilities (including St. John, Providence in Southfield and Novi, Macomb-Oakland, and Genesys), those campuses operate within the expanded Henry Ford Health footprint.
Does University of Michigan Health (Michigan Medicine) accept narrow-network Metro Detroit HMOs?
Many single-county or narrow HMO plans in Wayne, Oakland, and Macomb counties require prior authorization or specific Washtenaw/statewide network tiers to access University of Michigan Health in Ann Arbor, UM Health-Sparrow in Lansing, and UM Health-West.
Related Regional Network Guides
Need Help Comparing Corewell, Henry Ford, or Michigan Medicine Plans?
David Huff (Licensed in Michigan · NPN 18213932) helps Michigan residents compare 2027 ACA Marketplace and Medicare options across Metro Detroit, Ann Arbor, Grand Rapids, and Lansing.