William Fox, LCSW
NPI 1083893143 · Clinical Social Worker · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Fox, LCSW is a Clinical Social Worker provider in Walnut Creek, CA (NPI 1083893143).
Provider details
- NPI number
- 1083893143
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- LCSW13038 (CA)
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
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 140 Mayhew Way Ste 602Pleasant Hill, CA 94523-4337Phone: (925) 947-5600
Registry dates
- Enumerated
- 2007-10-25
- Last updated
- 2024-05-06
- Certified
- 2024-05-06
Frequently asked questions
- What is William Fox's NPI number?
- William Fox's National Provider Identifier (NPI) is 1083893143, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Fox's specialty?
- William Fox is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is William Fox located?
- William Fox's practice location on file with NPPES is 2970 Camino Diablo Ste 300, Walnut Creek, CA 94597-4001.
- What is William Fox's phone number?
- The practice phone number listed in the NPPES registry for William Fox is (925) 282-1778.
- Does William Fox accept Medicare?
- William Fox is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Fox's NPI active?
- Yes — William Fox's NPI (1083893143) is active in the NPPES registry as of the last update on 2024-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.