Howard Hahn, LCSW
NPI 1043724404 · Clinical Social Worker · San Francisco, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Howard Hahn, LCSW is a Clinical Social Worker provider in San Francisco, CA (NPI 1043724404).
Provider details
- NPI number
- 1043724404
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- No
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
8 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
- 2017-11-21
- Last updated
- 2017-11-21
Frequently asked questions
- What is Howard Hahn's NPI number?
- Howard Hahn's National Provider Identifier (NPI) is 1043724404, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Howard Hahn's specialty?
- Howard Hahn is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Howard Hahn located?
- Howard Hahn's practice location on file with NPPES is 45 Castro St Ste 220, San Francisco, CA 94114-1027.
- What is Howard Hahn's phone number?
- The practice phone number listed in the NPPES registry for Howard Hahn is (415) 600-5556.
- Does Howard Hahn accept Medicare?
- Howard Hahn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Howard Hahn's NPI active?
- Yes — Howard Hahn's NPI (1043724404) is active in the NPPES registry as of the last update on 2017-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.