Quick answers
- Which hospitals does John Masserant work at?
- Medicare's official clinician data lists John Masserant at 1 hospital: University of Michigan Health System. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John Masserant see patients?
- Medicare's clinician data lists 3 practice locations, including Ann Arbor, MI. Call before your visit to confirm the address.
- What is John Masserant's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does John Masserant accept Medicare assignment?
- Yes. Medicare's clinician data says John Masserant 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 Masserant?
- (734) 936-4000, as listed in official Medicare / NPI Registry data.
- What is John Masserant's NPI number?
- 1881612380. 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 Masserant works
Medicare's Facility Affiliation Data lists John Masserant at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- University of Michigan Health SystemAnn Arbor, MI · Acute Care Hospital · CCN 230046
Practice locations
Addresses where John Masserant is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 Wall StAnn Arbor, MI 48105 (734) 936‑4000
- 1500 E Medical Ctr DrAnn Arbor, MI 48109 (734) 936‑4000
- 4270 Plymouth RdAnn Arbor, MI 48109 (734) 936‑4000
Group practices
Medicare enrollment lists John Masserant as a member of this group (CMS data updated 2026-10-02).
- Regents of the University of Michigan3,346 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Michigan →
Other nurse anesthetists in Ann Arbor
Clinicians with the same Medicare primary specialty in Ann Arbor, MI — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1881612380 |
| 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