Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Peter Nicholas Mahr, MD

Individual provider Family Medicine Physician · NPI 1548312754

Peter Nicholas Mahr, MD is a Family Practice in Portland, Oregon. Graduated from Geisel School of Medicine at Dartmouth in 1998, 28 years ago. Practices with Multnomah County, a 111-clinician group and accepts Medicare assignment. Licensed in Oregon.

Years since qualifying
28
Trained at
Geisel School of Medicine at Dartmouth
Licensed in
OR
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

426 SW Stark St 8th Fl
Portland, OR 97204-2347
Phone: (503) 988-3674
Fax: (503) 988-5185
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence MC21928 (OR)

Record details

NPI number1548312754
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 17, 2007
Last updated in NPPESDecember 18, 2009

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolGEISEL SCHOOL OF MEDICINE AT DARTMOUTH
Graduated 1998 (28 years in practice)
Group practice Multnomah County — 111 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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