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

Ryanne J. Mayersak, MD

Individual provider Emergency Medical Services (Emergency Medicine) Physician · NPI 1194927558

Ryanne J. Mayersak, MD is an Emergency Medicine in Portland, Oregon. Graduated from George Washington University School of Medicine in 2003, 23 years ago. Practices with University Professional Services, a 1,704-clinician group and accepts Medicare assignment. Licensed in District of Columbia and Oregon.

Years since qualifying
23
Trained at
George Washington University School of Medicine
Licensed in
DC, OR
In the registry since
2007
Specialties on file
2
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

3181 SW Sam Jackson Park Rd Mail Code Cdw-Em
Portland, OR 97239-3011
Phone: (503) 494-7008
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence MD171647 (OR)
Emergency Medical Services (Emergency Medicine) Physician Taxonomy 207PE0004X · Licence MD036585 (DC)

Record details

NPI number1194927558
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 5, 2007
Last updated in NPPESDecember 31, 2015

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolGEORGE WASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2003 (23 years in practice)
Group practice University Professional Services — 1704 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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