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

Ronald O Watson, MD

Individual provider Internal Medicine Physician · NPI 1821173162

Ronald O Watson, MD is an Internal Medicine Physician in Seattle, 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.

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Practice location Address checks out

3400 California Ave SW Ste 300
Seattle, WA 98116
Phone: (206) 320-3399
Fax: (206) 320-5506
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD00021869 (WA)

Record details

NPI number1821173162
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 26, 2006
Last updated in NPPESFebruary 17, 2009
Mailing addressPo Box 84026, Seattle, WA 98124-8426

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