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

Dr. William Lionel Loker, MD

Individual provider Emergency Medicine Physician · NPI 1952635344

Dr. William Lionel Loker, MD is an Emergency Medicine in Portland, Oregon. Graduated from George Washington University School of Medicine in 2009, 17 years ago. Practices with Providence Health and Services - Oregon, a 191-clinician group and accepts Medicare assignment. Licensed in Oregon.

Years since qualifying
17
Trained at
George Washington University School of Medicine
Licensed in
OR
In the registry since
2009
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
Portland, OR 97239-3011
Phone: (503) 494-8311
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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 MD171850 (OR)

Record details

NPI number1952635344
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 1, 2009
Last updated in NPPESOctober 21, 2020
Certification dateOctober 21, 2020

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 2009 (17 years in practice)
Group practice Providence Health And Services - Oregon — 191 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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