IndividualActive
William Hartman, PHD
NPI 1124176276 · Clinical Social Worker · Greenwich, CT
Provider details
- NPI number
- 1124176276
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 002933 (CT)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 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
17 Sherwood Pl
Greenwich, CT 06830-5606
Phone: (203) 861-4173
Fax: (203) 552-1665
Street-level locationGet directions
Mailing address
1056 Clay Ave
Pelham, NY 10803-3203
Registry dates
- Enumerated
- 2007-01-08
- Last updated
- 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.