Quick answers
- Which hospitals does Peter N. Mahr work at?
- Medicare's official clinician data lists Peter N. Mahr at 4 hospitals: Adventist Health Portland, OHSU Hospital and Clinics, Providence Milwaukie Hospital and Providence Portland Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Peter N. Mahr see patients?
- Medicare's clinician data lists 1 practice location in Gresham, OR. Call before your visit to confirm the address.
- What is Peter N. Mahr's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Peter N. Mahr accept Medicare assignment?
- Yes. Medicare's clinician data says Peter N. Mahr 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 Peter N. Mahr?
- (503) 988-7468, as listed in official Medicare / NPI Registry data.
- What is Peter N. Mahr's NPI number?
- 1548312754. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Peter N. Mahr works
Medicare's Facility Affiliation Data lists Peter N. Mahr at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health PortlandPortland, OR · Acute Care Hospital · CCN 380060
- OHSU Hospital and ClinicsPortland, OR · Acute Care Hospital · CCN 380009
- Providence Milwaukie HospitalMilwaukie, OR · Acute Care Hospital · CCN 380082
- Providence Portland Medical CenterPortland, OR · Acute Care Hospital · CCN 380061
Practice locations
Addresses where Peter N. Mahr is enrolled with Medicare (CMS data updated 2026-10-02).
- 600 NE 8th StGresham, OR 97030 (503) 988‑7468
Group practices
Medicare enrollment lists Peter N. Mahr as a member of this group (CMS data updated 2026-10-02).
- Multnomah County111 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Gresham
Clinicians with the same Medicare primary specialty in Gresham, OR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Geisel School Of Medicine At Dartmouth |
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548312754 |
| 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