William Michailoff
NPI 1649699364 · Addiction (Substance Use Disorder) Counselor · French Camp, CA
William Michailoff is a Addiction (Substance Use Disorder) Counselor provider in French Camp, CA (NPI 1649699364).
Provider details
- NPI number
- 1649699364
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
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
12 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2014-04-09
- Last updated
- 2014-04-09
Frequently asked questions
- What is William Michailoff's NPI number?
- William Michailoff's National Provider Identifier (NPI) is 1649699364, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Michailoff's specialty?
- William Michailoff is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is William Michailoff located?
- William Michailoff's practice location on file with NPPES is 500 W Hospital Rd, French Camp, CA 95231-9693.
- What is William Michailoff's phone number?
- The practice phone number listed in the NPPES registry for William Michailoff is (209) 468-6857.
- Is William Michailoff's NPI active?
- Yes — William Michailoff's NPI (1649699364) is active in the NPPES registry as of the last update on 2014-04-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.