William Mcmillan, CDP
NPI 1164922324 · Mental Health Counselor · Chehalis, WA
William Mcmillan, CDP is a Mental Health Counselor provider in Chehalis, WA (NPI 1164922324).
Provider details
- NPI number
- 1164922324
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- CDP
- Sex
- Male
- Sole proprietor
- No
- License
- C060754866 (WA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
- Mental Health Counselor101YM0800X
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
8 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
- 2018-02-14
- Last updated
- 2026-05-24
- Certified
- 2024-07-22
Frequently asked questions
- What is William Mcmillan's NPI number?
- William Mcmillan's National Provider Identifier (NPI) is 1164922324, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Mcmillan's specialty?
- William Mcmillan is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is William Mcmillan located?
- William Mcmillan's practice location on file with NPPES is 151 N Market Blvd, Chehalis, WA 98532-2677.
- What is William Mcmillan's phone number?
- The practice phone number listed in the NPPES registry for William Mcmillan is (360) 948-0203.
- Is William Mcmillan's NPI active?
- Yes — William Mcmillan's NPI (1164922324) is active in the NPPES registry as of the last update on 2026-05-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.