Sonja Mcmillan, SUDP
NPI 1134363963 · Addiction (Substance Use Disorder) Counselor · Oakville, WA
Sonja Mcmillan, SUDP is a Addiction (Substance Use Disorder) Counselor provider in Oakville, WA (NPI 1134363963).
Provider details
- NPI number
- 1134363963
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- SUDP
- Sex
- Female
- Sole proprietor
- No
- License
- CP60449347 (WA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-04-23
- Last updated
- 2026-01-14
- Certified
- 2026-01-14
Frequently asked questions
- What is Sonja Mcmillan's NPI number?
- Sonja Mcmillan's National Provider Identifier (NPI) is 1134363963, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sonja Mcmillan's specialty?
- Sonja Mcmillan is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Sonja Mcmillan located?
- Sonja Mcmillan's practice location on file with NPPES is 21 Niederman Rd Ste C, Oakville, WA 98568-8904.
- What is Sonja Mcmillan's phone number?
- The practice phone number listed in the NPPES registry for Sonja Mcmillan is (360) 709-1733.
- Is Sonja Mcmillan's NPI active?
- Yes — Sonja Mcmillan's NPI (1134363963) is active in the NPPES registry as of the last update on 2026-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.