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MR. WILLIAM ALAN HORWICH L.M.H.C.
NPI 1720227374
Counselor - Mental Health in Sleepy Hollow, NY

Active since February 05, 2009
239 N BROADWAY, SLEEPY HOLLOW, NY 10591(914) 631-2022 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 21, 2022, Jun 8, 2017 (2 updates tracked since 2017).

About Mr. William Alan Horwich L.m.h.c. NPPES

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

MR. WILLIAM ALAN HORWICH L.M.H.C. (NPI 1720227374) is an individual mental health provider in Sleepy Hollow, New York, licensed in New York (003582) and active in the NPI registry since February 2009.

NPPES Registry Identity

NPI1720227374
Entity TypeIndividualMale
Primary Taxonomy101YM0800X
Provider Legal NameMR. WILLIAM ALAN HORWICHCredential: L.M.H.C.
Location Address239 N BROADWAYSleepy Hollow, NY 10591-2674
Mailing Address5800 Arlington Ave. #21wBronx, NY 10471 · (347) 275-1910
Phone(914) 631-2022
Sole ProprietorYes
Enumeration DateFebruary 5, 2009
Last NPPES UpdateJuly 21, 20222 updates tracked since enumeration
✔ NPI 1720227374 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
License✔ Licensed in NY · 003582
239 N BROADWAY, Sleepy Hollow, NY 10591
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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.

MS. JOHANNY Y PENA LMSW
Social Worker (Clinical)
239 N BROADWAY
SLEEPY HOLLOW, NY 10591
Westchester County (347) 852-1407
DR. ALICE MARIE NOVELLO PH.D.
Psychologist
239 N BROADWAY, SUITE 6
SLEEPY HOLLOW, NY 10591
Westchester County (914) 631-6263
DR. MARY KAY AEBLY-RYAN PSY.D.
Psychologist
239 N BROADWAY, SUITE 6
SLEEPY HOLLOW, NY 10591
Westchester County (914) 432-7752
MR. ANDREW JAMES MCGLATHERY NP
Nurse Practitioner (Psychiatric/Mental Health)
239 N BROADWAY, SUITE 6
SLEEPY HOLLOW, NY 10591
Westchester County (929) 256-1944
GAYLE STURMER LCSW-R
Social Worker (Clinical)
239 N BROADWAY
SLEEPY HOLLOW, NY 10591
Westchester County (914) 450-2413
MS. KAREN A BISIGNANO LMSW
Social Worker (Clinical)
239 N BROADWAY
SLEEPY HOLLOW, NY 10591
Westchester County (914) 631-2022
AMANDA NASH LMSW
Social Worker
239 N BROADWAY
SLEEPY HOLLOW, NY 10591
Westchester County (914) 631-2022
PAULA J. HELLER LCSW, BCD
Social Worker (Clinical)
239 N BROADWAY
SLEEPY HOLLOW, NY 10591
Westchester County (914) 582-7595

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 William Horwich's NPI number?

The NPI number for William Horwich is 1720227374. It was assigned to this individual provider in the NPPES registry on February 5, 2009.

Where is William Horwich located?

William Horwich practices at 239 N Broadway, Sleepy Hollow, NY 10591. The listed phone number is (914) 631-2022.

What is William Horwich's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

When was this NPI record last updated?

The NPPES record for William Horwich was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.