Quick answers
- Which hospitals does Maria Johnston work at?
- Medicare's official clinician data lists Maria Johnston at 1 hospital: ProMedica Toledo Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Maria Johnston see patients?
- Medicare's clinician data lists 4 practice locations, including Novi, MI, Ypsilanti, MI and Maumee, OH. Call before your visit to confirm the address.
- What is Maria Johnston's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does Maria Johnston accept Medicare assignment?
- Medicare's clinician data says Maria Johnston may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Maria Johnston?
- (248) 477-2200, as listed in official Medicare / NPI Registry data.
- What is Maria Johnston's NPI number?
- 1649357443. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Maria Johnston works
Medicare's Facility Affiliation Data lists Maria Johnston at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- ProMedica Toledo HospitalToledo, OH · Acute Care Hospital · CCN 360068
Practice locations
Addresses where Maria Johnston is enrolled with Medicare (CMS data updated 2026-10-02).
- 25500 Meadowbrook Rd, Suite 110Novi, MI 48375 (248) 477‑2200
- 26750 Providence Pkwy, Suite 100Novi, MI 48374 (248) 662‑1500
- 5300 Elliott DrYpsilanti, MI 48197 (734) 434‑6262
- 5959 Monclova RdMaumee, OH 43537 (419) 893‑5911
Group practices
Medicare enrollment lists Maria Johnston as a member of these groups (CMS data updated 2026-10-02).
- Huron Gastroenterology Associates PC99 clinicians in the group
- West Michigan Aas LLC38 clinicians in the group
- A4 of Ohio LLC33 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Michigan →
Other nurse anesthetists in Novi
Clinicians with the same Medicare primary specialty in Novi, MI — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 1998 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1649357443 |
| 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