IndividualActive
William Obrien, LCSW
NPI 1851707582 · Clinical Social Worker · New York, NY
William Obrien, LCSW is a Clinical Social Worker provider in New York, NY (NPI 1851707582).
Provider details
- NPI number
- 1851707582
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 080208 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(75/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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
64 E 111th St
Apt 608
New York, NY 10029-0249
Phone: (917) 587-6711
Street-level locationGet directions
Mailing address
64 E 111th St
New York, NY 10029-0249
Registry dates
- Enumerated
- 2014-07-02
- Last updated
- 2014-07-02
Frequently asked questions
- What is William Obrien's NPI number?
- William Obrien's National Provider Identifier (NPI) is 1851707582, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Obrien's specialty?
- William Obrien is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is William Obrien located?
- William Obrien's practice location on file with NPPES is 64 E 111th St, New York, NY 10029-0249.
- What is William Obrien's phone number?
- The practice phone number listed in the NPPES registry for William Obrien is (917) 587-6711.
- Is William Obrien's NPI active?
- Yes — William Obrien's NPI (1851707582) is active in the NPPES registry as of the last update on 2014-07-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.