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

William Forsythe, DO, PLLC

Organization Emergency Medical Services (Emergency Medicine) Physician · NPI 1003143652

William Forsythe, DO, PLLC is an Emergency Medical Services (Emergency Medicine) Physician in Kennewick, Washington. Registered with an NPI since 2009.

In the registry since
2009
Specialties on file
2
What do these letters mean?
PLLC — Professional limited liability company
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Practice location Address checks out

8656 W Gage Blvd Ste A106
Kennewick, WA 99336-1150
Phone: (509) 366-2108
Show map & directions

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

Specialties & licences

Emergency Medical Services (Emergency Medicine) Physician (primary) Taxonomy 207PE0004X
Geriatric Medicine (Family Medicine) Physician Taxonomy 207QG0300X

Record details

NPI number1003143652
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official William Forsythe — Owner · (509) 460-1065
NPI enumeratedNovember 3, 2009
Last updated in NPPESNovember 21, 2025
Certification dateNovember 21, 2025
Mailing address8656 W Gage Blvd Ste A106, Kennewick, WA 99336-1150

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