Quick answers
- Which hospitals does John C. Mulligan work at?
- Medicare's official clinician data lists John C. Mulligan at 2 hospitals: Corewell Health Pennock Hospital and Spectrum Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Mulligan see patients?
- Medicare's clinician data lists 4 practice locations, including Hastings, MI, Grand Rapids, MI and Kentwood, MI. Call before your visit to confirm the address.
- What is John C. Mulligan's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine.
- Does John C. Mulligan accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Mulligan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John C. Mulligan?
- (616) 885-5000, as listed in official Medicare / NPI Registry data.
- What is John C. Mulligan's NPI number?
- 1659352847. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John C. Mulligan works
Medicare's Facility Affiliation Data lists John C. Mulligan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Corewell Health Pennock HospitalHastings, MI · Critical Access Hospital · CCN 231339
- Spectrum HealthGrand Rapids, MI · Acute Care Hospital · CCN 230038
Practice locations
Addresses where John C. Mulligan is enrolled with Medicare (CMS data updated 2026-10-02).
- 1005 W Green StHastings, MI 49058
- 2900 Bradford St NE, Corewell Health Medical Group WestGrand Rapids, MI 49525 (616) 885‑5000
- 2902 Bradford St NE, Corewell Health Medical Group WestGrand Rapids, MI 49525 (616) 486‑6577
- 4444 Kalamazoo Ave SE, 200 Corewell Health Medical Group WestKentwood, MI 49508 (616) 391‑5600
Group practices
Medicare enrollment lists John C. Mulligan as a member of this group (CMS data updated 2026-10-02).
- Spectrum Health Primary Care Partners2,294 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Michigan →
Other cardiologists in Michigan
Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | At Still University Of Health Sciences, College Of Osteo Med, Kirksville |
| Graduation year | 1974 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659352847 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians