William Bell, LMFT, PH.D.
NPI 1902831878 · Marriage & Family Therapist · San Mateo, CA
Enrolled with Medicare as Practitioner - Marriage and Family Therapist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Bell, LMFT, PH.D. is a Marriage & Family Therapist provider in San Mateo, CA (NPI 1902831878).
Provider details
- NPI number
- 1902831878
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- LMFT, PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 38966 (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
19 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
- 2006-07-11
- Last updated
- 2023-01-11
- Certified
- 2023-01-11
Frequently asked questions
- What is William Bell's NPI number?
- William Bell's National Provider Identifier (NPI) is 1902831878, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Bell's specialty?
- William Bell is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is William Bell located?
- William Bell's practice location on file with NPPES is 327 N San Mateo Dr Ste 10, San Mateo, CA 94401.
- What is William Bell's phone number?
- The practice phone number listed in the NPPES registry for William Bell is (415) 710-9777.
- Does William Bell accept Medicare?
- William Bell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Bell's NPI active?
- Yes — William Bell's NPI (1902831878) is active in the NPPES registry as of the last update on 2023-01-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.