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Irving Hahn, LCSW
NPI 1164638375 · Clinical Social Worker · New York, NY
Irving Hahn, LCSW is a Clinical Social Worker provider in New York, NY (NPI 1164638375).
Provider details
- NPI number
- 1164638375
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- PR024585-1 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(89/100 index)
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
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
5 W 86th St
Suite 1d
New York, NY 10024-3603
Phone: (212) 580-3535
Fax: (212) 580-3535
Street-level locationGet directions
Mailing address
51 W 81st St Apt 7d
New York, NY 10024-6010
Registry dates
- Enumerated
- 2007-05-15
- Last updated
- 2007-07-08
Frequently asked questions
- What is Irving Hahn's NPI number?
- Irving Hahn's National Provider Identifier (NPI) is 1164638375, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irving Hahn's specialty?
- Irving Hahn is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Irving Hahn located?
- Irving Hahn's practice location on file with NPPES is 5 W 86th St, New York, NY 10024-3603.
- What is Irving Hahn's phone number?
- The practice phone number listed in the NPPES registry for Irving Hahn is (212) 580-3535.
- Is Irving Hahn's NPI active?
- Yes — Irving Hahn's NPI (1164638375) 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.