Brendan O'Connell, LCSW
NPI 1669937397 · Clinical Social Worker · East Islip, NY
Brendan O'Connell, LCSW is a Clinical Social Worker provider in East Islip, NY (NPI 1669937397).
Provider details
- NPI number
- 1669937397
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 085772 (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
7 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
- 2019-02-06
- Last updated
- 2019-02-06
Frequently asked questions
- What is Brendan O'Connell's NPI number?
- Brendan O'Connell's National Provider Identifier (NPI) is 1669937397, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brendan O'Connell's specialty?
- Brendan O'Connell is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Brendan O'Connell located?
- Brendan O'Connell's practice location on file with NPPES is 55 Carleton Ave Ste 5, East Islip, NY 11730-2133.
- What is Brendan O'Connell's phone number?
- The practice phone number listed in the NPPES registry for Brendan O'Connell is (631) 579-3503.
- Is Brendan O'Connell's NPI active?
- Yes — Brendan O'Connell's NPI (1669937397) is active in the NPPES registry as of the last update on 2019-02-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.