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

Dr. William Joseph Prothero, OD

Individual provider Optometrist · NPI 1144223405

Dr. William Joseph Prothero, OD is an Optometrist in Bellevue, Washington. Licensed in California and Washington. Registered with an NPI since 2005.

Licensed in
CA, WA
In the registry since
2005
Specialties on file
2
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

1837 156th Ave NE Ste 201
Bellevue, WA 98007-4387
Phone: (425) 643-2020
Fax: (425) 643-0859
Show map & directions

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

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence OD00001765 (WA)
Optometrist Taxonomy 152W00000X · Licence 9074 (CA)

Record details

NPI number1144223405
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedMay 31, 2005
Last updated in NPPESMarch 7, 2023

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