Quick answers
- Which hospitals does Tonya Allendorfer work at?
- Medicare's official clinician data lists Tonya Allendorfer at 2 hospitals: McLaren Lapeer Region and McLaren Thumb Region. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Tonya Allendorfer see patients?
- Medicare's clinician data lists 2 practice locations, including Lapeer, MI. Call before your visit to confirm the address.
- What is Tonya Allendorfer's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Tonya Allendorfer accept Medicare assignment?
- Yes. Medicare's clinician data says Tonya Allendorfer 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 Tonya Allendorfer?
- (810) 969-4040, as listed in official Medicare / NPI Registry data.
- What is Tonya Allendorfer's NPI number?
- 1326657388. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Tonya Allendorfer works
Medicare's Facility Affiliation Data lists Tonya Allendorfer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- McLaren Lapeer RegionLapeer, MI · Acute Care Hospital · CCN 230193
- McLaren Thumb RegionBad Axe, MI · Critical Access Hospital · CCN 231340
Practice locations
Addresses where Tonya Allendorfer is enrolled with Medicare (CMS data updated 2026-10-02).
- 1257 N Main StLapeer, MI 48446 (810) 969‑4040
- 1375 N Main StLapeer, MI 48446 (810) 667‑5500
Group practices
Medicare enrollment lists Tonya Allendorfer as a member of these groups (CMS data updated 2026-10-02).
- McLaren Hospital Group375 clinicians in the group
- Ashraf Mostafa MD PLLC2 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Lapeer
Clinicians with the same Medicare primary specialty in Lapeer, MI — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326657388 |
| 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