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NATHANIEL O'NEIL LCSW
NPI 1801468616
Social Worker - Clinical in Lake Grove, NY

Active since July 12, 2021
2233 NESCONSET HWY, LAKE GROVE, NY 11755(631) 786-8930 Get Directions Write a Review

NPPES record last updated: January 8, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jan 8, 2026, Jul 12, 2021 (2 updates tracked since 2021).

About Nathaniel O'neil Lcsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

NATHANIEL O'NEIL LCSW (NPI 1801468616) is an individual clinical provider in Lake Grove, New York, licensed in New York (106007-1) and active in the NPI registry since July 2021. He maintains a secondary practice location in Medford.

NPPES Registry Identity

NPI1801468616
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameNATHANIEL O'NEILCredential: LCSW
Location Address2233 NESCONSET HWYLake Grove, NY 11755-1000
Mailing Address2233 Nesconset Hwy Ste 106Lake Grove, NY 11755-1000 · (631) 786-8930
Phone(631) 786-8930
Sole ProprietorNo
Enumeration DateJuly 12, 2021
Last NPPES UpdateJanuary 8, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 8, 2026
✔ NPI 1801468616 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in NY · 106007-1
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
2233 NESCONSET HWY, Lake Grove, NY 11755
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Secondary Practice Location 1

Location 11757 NORTH OCEAN AVEMEDFORD, NY 11763 · Phone (631) 654-1919

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EAST COAST FERTILITY, P.C.
Obstetrics & Gynecology (Reproductive Endocrinology)
2233 NESCONSET HWY, SUITE 107
LAKE GROVE, NY 11755
Suffolk County (516) 939-2229
TONI ANN E MULE MHC-LP
Counselor (Mental Health)
2233 NESCONSET HWY
LAKE GROVE, NY 11755
Suffolk County (631) 560-0994
DR. CLIFFORD A. DUKOFSKY D.C.
Chiropractor
2233 NESCONSET HWY, SUITE 102
LAKE GROVE, NY 11755
Suffolk County (631) 698-9800
DR. EDWARD M BRAM D.M.D.
Dentist (General Practice)
2233 NESCONSET HWY, SUITE 101
LAKE GROVE, NY 11755
Suffolk County (631) 588-3636
SMITH HAVEN DENTISTRY, PLLC
Clinic/Center (Dental)
2233 NESCONSET HWY, STE #101
LAKE GROVE, NY 11755
Suffolk County (631) 588-3636
ANDREW HERBST LMHC
Counselor (Mental Health)
2233 NESCONSET HWY
LAKE GROVE, NY 11755
Suffolk County (631) 521-9603
DR. JOHN TSOURIS D.P.M.
Podiatrist (Foot Surgery)
2233 NESCONSET HWY, SUITE 206
LAKE GROVE, NY 11755
Suffolk County (631) 751-4603
MS. JENNIFER FAZIO LMSW
Social Worker (Clinical)
2233 NESCONSET HWY, SUITE 104
LAKE GROVE, NY 11755
Suffolk County (631) 737-5559

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nathaniel O'neil's NPI number?

The NPI number for Nathaniel O'neil is 1801468616. It was assigned to this individual provider in the NPPES registry on July 12, 2021.

Where is Nathaniel O'neil located?

Nathaniel O'neil practices at 2233 Nesconset Hwy, Lake Grove, NY 11755. The listed phone number is (631) 786-8930.

What is Nathaniel O'neil's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

When was this NPI record last updated?

The NPPES record for Nathaniel O'neil was last updated on January 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.