Quick answers
- Where does John Grabowski see patients?
- Medicare's clinician data lists 1 practice location in Warren, MI. Call before your visit to confirm the address.
- What is John Grabowski's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does John Grabowski accept Medicare assignment?
- Yes. Medicare's clinician data says John Grabowski 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.
- Does John Grabowski offer telehealth?
- Medicare's clinician data says John Grabowski offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John Grabowski?
- (586) 582-7979, as listed in official Medicare / NPI Registry data.
- What is John Grabowski's NPI number?
- 1477517191. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where John Grabowski is enrolled with Medicare (CMS data updated 2026-10-02).
- 27550 Schoenherr Rd, Suite 300Warren, MI 48088 (586) 582‑7979
Specialties
- Psychiatryprimary
Other psychiatrists in Warren
Clinicians with the same Medicare primary specialty in Warren, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wayne State University School Of Medicine |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1477517191 |
| 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
- 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