Hal Williams, M.A.
NPI 1821295858 · Marriage & Family Therapist · San Bernardino, CA
Hal Williams, M.A. is a Marriage & Family Therapist provider in San Bernardino, CA (NPI 1821295858).
Provider details
- NPI number
- 1821295858
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- M.A.
- Sex
- Male
- Sole proprietor
- Yes
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
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
- 2007-07-02
- Last updated
- 2007-07-08
Frequently asked questions
- What is Hal Williams's NPI number?
- Hal Williams's National Provider Identifier (NPI) is 1821295858, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hal Williams's specialty?
- Hal Williams is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Hal Williams located?
- Hal Williams's practice location on file with NPPES is 1585 S D St, San Bernardino, CA 92408-3257.
- What is Hal Williams's phone number?
- The practice phone number listed in the NPPES registry for Hal Williams is (909) 388-2222.
- Is Hal Williams's NPI active?
- Yes — Hal Williams's NPI (1821295858) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.