Gary Callahan-Smith
NPI 1336859404 · Clinical Social Worker · San Leandro, CA
Gary Callahan-Smith is a Clinical Social Worker provider in San Leandro, CA (NPI 1336859404).
Provider details
- NPI number
- 1336859404
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 108953 (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
3 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
- 2022-11-30
- Last updated
- 2022-12-02
- Certified
- 2022-12-02
Frequently asked questions
- What is Gary Callahan-Smith's NPI number?
- Gary Callahan-Smith's National Provider Identifier (NPI) is 1336859404, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Callahan-Smith's specialty?
- Gary Callahan-Smith is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Gary Callahan-Smith located?
- Gary Callahan-Smith's practice location on file with NPPES is 15200 Foothill Blvd, San Leandro, CA 94578-1013.
- What is Gary Callahan-Smith's phone number?
- The practice phone number listed in the NPPES registry for Gary Callahan-Smith is (510) 352-9690.
- Is Gary Callahan-Smith's NPI active?
- Yes — Gary Callahan-Smith's NPI (1336859404) is active in the NPPES registry as of the last update on 2022-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.