What is Lelan O'Brien's NPI number?

Lelan O'Brien's National Provider Identifier (NPI) is 1629950522, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Lelan O'Brien's specialty?

Lelan O'Brien is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).

Where is Lelan O'Brien located?

Lelan O'Brien's practice location on file with NPPES is 579 Courtlandt Ave, Bronx, NY 10451-5013.

What is Lelan O'Brien's phone number?

The practice phone number listed in the NPPES registry for Lelan O'Brien is (718) 908-8000.

Is Lelan O'Brien's NPI active?

Yes — Lelan O'Brien's NPI (1629950522) is active in the NPPES registry as of the last update on 2025-07-22.

IndividualActive

Lelan O'Brien

NPI 1629950522 · Social Worker · Bronx, NY

Lelan O'Brien is a Social Worker provider in Bronx, NY (NPI 1629950522).

Provider details

NPI number: 1629950522
Entity type: Individual
Primary specialty: Social WorkerBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: Yes
License: 127863 (NY)

Specialties & taxonomies

Social WorkerPrimary104100000XLicense 127863 (NY)
Behavioral Health & Social Service Providers

Profile Score

Established profile(54/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in 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

579 Courtlandt Ave

Bronx, NY 10451-5013

Phone: (718) 908-8000

Street-level locationGet directions

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Mailing address