William Quinn, MSSW
NPI 1053446831 · Clinical Social Worker · Greenwich, CT
William Quinn, MSSW is a Clinical Social Worker provider in Greenwich, CT (NPI 1053446831).
Provider details
- NPI number
- 1053446831
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSSW
- Sex
- Male
- Sole proprietor
- No
- License
- 000254 (CT)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
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
Mailing address
Registry dates
- Enumerated
- 2007-02-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Quinn's NPI number?
- William Quinn's National Provider Identifier (NPI) is 1053446831, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Quinn's specialty?
- William Quinn is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is William Quinn located?
- William Quinn's practice location on file with NPPES is 200 Railroad Ave, Greenwich, CT 06830-0000.
- What is William Quinn's phone number?
- The practice phone number listed in the NPPES registry for William Quinn is (203) 869-3337.
- Is William Quinn's NPI active?
- Yes — William Quinn's NPI (1053446831) 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.