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

William Chester Barker

Individual provider Peer Specialist · NPI 1194692889

William Chester Barker is a Peer Specialist in Corvallis, Oregon. Practices as a sole proprietor. Registered with an NPI since 2025.

In the registry since
2025

Practice location Address checks out

216 NW 15th St
Corvallis, OR 97330-5804
Phone: (541) 360-1837
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Peer Specialist (primary) Taxonomy 175T00000X

Record details

NPI number1194692889
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedOctober 20, 2025
Last updated in NPPESOctober 20, 2025
Certification dateOctober 19, 2025
Mailing address216 Nw 15th St, Corvallis, OR 97330-5804

Other providers in Corvallis