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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MR. STEVEN JAY BAILYN LCSW
NPI 1659321479
Social Worker - Clinical in New York, NY

Active since May 11, 2006
423 E 23RD ST, NEW YORK, NY 10010(212) 951-3295 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mr. Steven Jay Bailyn Lcsw NPPES

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

MR. STEVEN JAY BAILYN LCSW (NPI 1659321479) is an individual clinical provider in New York, New York, licensed in New York (R014951-1) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1659321479
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMR. STEVEN JAY BAILYNCredential: LCSW
Location Address423 E 23RD STNew York, NY 10010-5011
Mailing Address18 Stuyvesant Oval, Apt 3 BNew York, NY 10009-2242 · (212) 951-3295
Phone(212) 951-3295
Sole ProprietorNo
Enumeration DateMay 11, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1659321479 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 · R014951-1
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.
423 E 23RD ST, New York, NY 10010
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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.

DR. JASON H EPSTEIN MD
Anesthesiology (Pain Medicine)
423 E 23RD ST
NEW YORK, NY 10010
New York County (212) 686-7500
MR. GREG DATILES GONZALES RRT-NPS, RPFT, AEC
Respiratory Therapist, Registered (Critical Care)
423 E 23RD ST, RESPIRATORY CARE SERVICES ROOM 13095S
NEW YORK, NY 10010
New York County (212) 686-7500
DR. LAMONT JORDAN BARLOW
Urology
423 E 23RD ST
NEW YORK, NY 10010
New York County (212) 686-7500
MRS. PASCALE FILS-AIME RRT
Respiratory Therapist, Registered (General Care)
423 E 23RD ST, RESPIRATORY CARE RM 13090S
NEW YORK, NY 10010
New York County (212) 686-7500
MS. COURTNEY DUNN LCSW
Social Worker (Clinical)
423 E 23RD ST
NEW YORK, NY 10010
New York County (212) 686-7500
DR. PATRICK COLIN MALLOY M.D.
Radiology (Vascular & Interventional Radiology)
423 E 23RD ST, RADIOLOGY SERVICE
NEW YORK, NY 10010
New York County (212) 686-7500
CARLA ASSENZA LMSW
Social Worker
423 E 23RD ST
NEW YORK, NY 10010
New York County (212) 686-7500
CARA MARY OCHSENREITER LMSW
Social Worker
423 E 23RD ST
NEW YORK, NY 10010
New York County (347) 216-5546

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 Steven Bailyn's NPI number?

The NPI number for Steven Bailyn is 1659321479. It was assigned to this individual provider in the NPPES registry on May 11, 2006.

Where is Steven Bailyn located?

Steven Bailyn practices at 423 E 23rd St, New York, NY 10010. The listed phone number is (212) 951-3295.

What is Steven Bailyn'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 Steven Bailyn was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days 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.