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

Sonja Lynn McMillan, SUDP

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1134363963

Sonja Lynn McMillan, SUDP is an Addiction (Substance Use Disorder) Counselor in Oakville, Washington. Licensed in Washington. Registered with an NPI since 2009.

Licensed in
WA
In the registry since
2009

Practice location Address checks out

21 Niederman Rd Ste C
Oakville, WA 98568-8904
Phone: (360) 709-1733
Show map & directions

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

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X · Licence CP60449347 (WA)

Record details

NPI number1134363963
Entity typeIndividual (Type 1)
GenderFemale
Credentials SUDP
Sole proprietorNo
NPI enumeratedApril 23, 2009
Last updated in NPPESJanuary 14, 2026
Certification dateJanuary 14, 2026

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