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

KATHARINE SIDELNIK LMSW
NPI 1205550654
Social Worker - Clinical in Woodstock, NY

Active since September 29, 2022
404 ZENA RD, WOODSTOCK, NY 12498(845) 679-8650 Get Directions Write a Review

NPPES record last updated: June 30, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 4, 2026, Apr 15, 2026, Sep 29, 2022 (3 updates tracked since 2022).

About Katharine Sidelnik Lmsw NPPES

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

KATHARINE SIDELNIK LMSW (NPI 1205550654) is an individual clinical provider in Woodstock, New York, licensed in New York (117509) and active in the NPI registry since September 2022.

NPPES Registry Identity

NPI1205550654
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameKATHARINE SIDELNIKCredential: LMSW
Location Address404 ZENA RDWoodstock, NY 12498-2626
Mailing Address404 Zena RdWoodstock, NY 12498-2626 · (845) 679-8650
Sole ProprietorNo
Enumeration DateSeptember 29, 2022
Last NPPES UpdateJune 30, 20263 updates tracked since enumeration
NPPES CertifiedJune 30, 2026
NPI 1205550654 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 · 117509
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.
404 ZENA RD, Woodstock, NY 12498

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.

Counselor (Mental Health)
404 ZENA RD
WOODSTOCK, NY 12498
Social Worker (Clinical)
404 ZENA RD
WOODSTOCK, NY 12498
Social Worker
404 ZENA RD
WOODSTOCK, NY 12498
Social Worker
404 ZENA RD
WOODSTOCK, NY 12498
Family Medicine
404 ZENA RD
WOODSTOCK, NY 12498
Social Worker (Clinical)
404 ZENA RD
WOODSTOCK, NY 12498
Counselor (Mental Health)
404 ZENA RD
WOODSTOCK, NY 12498
Counselor (Mental Health)
404 ZENA RD
WOODSTOCK, NY 12498

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 Katharine Sidelnik's NPI number?

The NPI number for Katharine Sidelnik is 1205550654. It was assigned to this individual provider in the NPPES registry on September 29, 2022.

Where is Katharine Sidelnik located?

Katharine Sidelnik practices at 404 Zena Rd, Woodstock, NY 12498. The listed phone number is (845) 679-8650.

What is Katharine Sidelnik'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 Katharine Sidelnik was last updated on June 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 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.