Provider Profile
Gerald E. Callahan, SUDRC
Unclaimed ProfileAbout Gerald Callahan
Gerald E. Callahan, SUDRC practices community health worker in San Francisco, CA. Gerald is also listed as specializing in case manager / care coordinator and addiction & substance abuse counselor.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (415) 213-1921
- Email not available
Practice Locations
2020 HAYES ST
San Francisco, CA 94117
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other community health workers at this location 2
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Common questions
What does Dr. Callahan specialize in?
Dr. Callahan is a community health worker in San Francisco, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Community Health Worker”.
NPI registry
Where is Dr. Callahan located?
Dr. Callahan is listed at 2020 HAYES ST, San Francisco, CA 94117. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Callahan's phone number?
The number on file is (415) 213-1921. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Callahan's NPI number?
Dr. Callahan's National Provider Identifier is 1972384402. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How long has Dr. Callahan been practicing?
Dr. Callahan has 3+ years experience. Registered with an NPI since 2023. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Has Dr. Callahan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Callahan. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.