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

Doug John Williamson, MD

Individual provider Emergency Medicine Physician · NPI 1033267067

Doug John Williamson, MD is an Emergency Medicine Physician in Riverside, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
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

10800 Magnolia Ave
Riverside, CA 92505-3043
Phone: (909) 353-2000
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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 A79642 (CA)

Record details

NPI number1033267067
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 8, 2007
Last updated in NPPESNovember 29, 2021
Mailing address10800 Magnolia Ave, Riverside, CA 92505-3043

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