Quick answers
- Where does Gretchen E. Zajac see patients?
- Medicare's clinician data lists 4 practice locations, including Pontiac, MI, Ypsilanti, MI and Chelsea, MI. Call before your visit to confirm the address.
- What is Gretchen E. Zajac's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Gretchen E. Zajac accept Medicare assignment?
- Yes. Medicare's clinician data says Gretchen E. Zajac 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 Gretchen E. Zajac?
- (734) 712-8700, as listed in official Medicare / NPI Registry data.
- What is Gretchen E. Zajac's NPI number?
- 1013386101. 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 Gretchen E. Zajac is enrolled with Medicare (CMS data updated 2026-10-02).
- 44428 Woodward Ave, Suite 102Pontiac, MI 48341 (734) 712‑8700
- 5301 E Huron River DrYpsilanti, MI 48197
- 5301 McAuley DrYpsilanti, MI 48197
- 775 S Main StChelsea, MI 48118
Group practices
Medicare enrollment lists Gretchen E. Zajac as a member of this group (CMS data updated 2026-10-02).
- Iha Health Services Corporation1,168 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Pontiac
Clinicians with the same Medicare primary specialty in Pontiac, MI — not a recommendation.
Clinician information
| Graduation year | 2015 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1013386101 |
| 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