Quick answers
- Which hospitals does John A. Ellis work at?
- Medicare's official clinician data lists John A. Ellis at 1 hospital: Trinity Health Oakland Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John A. Ellis see patients?
- Medicare's clinician data lists 6 practice locations, including Rochester, MI, Troy, MI and Novi, MI. Call before your visit to confirm the address.
- What is John A. Ellis's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does John A. Ellis accept Medicare assignment?
- Yes. Medicare's clinician data says John A. Ellis 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 A. Ellis?
- (248) 652-5000, as listed in official Medicare / NPI Registry data.
- What is John A. Ellis's NPI number?
- 1477669430. 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 A. Ellis works
Medicare's Facility Affiliation Data lists John A. Ellis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Trinity Health Oakland HospitalPontiac, MI · Acute Care Hospital · CCN 230029
Practice locations
Addresses where John A. Ellis is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1101 W University DrRochester, MI 48307 (248) 652‑5000
- 130 Town Ctr DrTroy, MI 48084 (248) 624‑7246
- 1560 E Maple RdTroy, MI 48083 (248) 817‑2001
- 25500 Meadowbrook Rd, Suite 110Novi, MI 48375 (248) 477‑2200
- 28595 Orchard Lake Rd, Suite 200Farmington Hills, MI 48334 (248) 553‑0010
Group practices
Medicare enrollment lists John A. Ellis as a member of these groups (CMS data updated 2026-10-02).
- Anesthesia Associates of Ann Arbor PLLC219 clinicians in the group
- Henry Ford Health Rochester Hospital112 clinicians in the group
- West Michigan Aas LLC38 clinicians in the group
- Michigan Interventional Pain Associates PLLC6 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Michigan →
Other nurse anesthetists in Rochester
Clinicians with the same Medicare primary specialty in Rochester, MI — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477669430 |
| 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