Glen Williamson, L.C.S.W.
NPI 1447448600 · Clinical Social Worker · New York, NY
Glen Williamson, L.C.S.W. is a Clinical Social Worker provider in New York, NY (NPI 1447448600).
Provider details
- NPI number
- 1447448600
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- L.C.S.W.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PO62364-1 (NY)
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
18 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
- 2007-10-11
- Last updated
- 2010-08-19
Frequently asked questions
- What is Glen Williamson's NPI number?
- Glen Williamson's National Provider Identifier (NPI) is 1447448600, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Glen Williamson's specialty?
- Glen Williamson is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Glen Williamson located?
- Glen Williamson's practice location on file with NPPES is 309 W 74th St, New York, NY 10023-1604.
- What is Glen Williamson's phone number?
- The practice phone number listed in the NPPES registry for Glen Williamson is (212) 787-2527.
- Is Glen Williamson's NPI active?
- Yes — Glen Williamson's NPI (1447448600) is active in the NPPES registry as of the last update on 2010-08-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.