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

William J Penn, MD

Individual provider Emergency Medicine Physician · NPI 1194771535

William J Penn, MD is an Emergency Medicine Physician in Yelm, Washington. Licensed in Washington. Registered with an NPI since 2006.

Licensed in
WA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

201 Tahoma Blvd Ste 102
Yelm, WA 98597-7735
Phone: (360) 458-7761
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence MD00020401 (WA)

Record details

NPI number1194771535
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 26, 2006
Last updated in NPPESSeptember 20, 2013
Mailing address201 Tahoma Blvd, Suite 102, Yelm, WA 98597-7735