Gerald Callahan, SUDRC
NPI 1972384402 · Case Manager/Care Coordinator · San Francisco, CA
Gerald Callahan, SUDRC is a Case Manager/Care Coordinator provider in San Francisco, CA (NPI 1972384402).
Provider details
- NPI number
- 1972384402
- Entity type
- Individual
- Primary specialty
- Case Manager/Care CoordinatorOther Service Providers
- Credential
- SUDRC
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Other Service Providers
- Community Health Worker172V00000X
Other Service Providers
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
2 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
- 2023-10-10
- Last updated
- 2023-11-08
- Certified
- 2023-11-08
Frequently asked questions
- What is Gerald Callahan's NPI number?
- Gerald Callahan's National Provider Identifier (NPI) is 1972384402, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gerald Callahan's specialty?
- Gerald Callahan is listed in the NPPES registry with a primary specialty of Case Manager/Care Coordinator (Other Service Providers).
- Where is Gerald Callahan located?
- Gerald Callahan's practice location on file with NPPES is 2020 Hayes St, San Francisco, CA 94117-1128.
- What is Gerald Callahan's phone number?
- The practice phone number listed in the NPPES registry for Gerald Callahan is (415) 213-1921.
- Is Gerald Callahan's NPI active?
- Yes — Gerald Callahan's NPI (1972384402) is active in the NPPES registry as of the last update on 2023-11-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.