Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Miss Doreen J Zydor, NYS CASAC- T, NYCPS

Peer Specialist in Callicoon, NY · enumerated 2019.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1831651421

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Registry record

Entity type Individual (Type 1)

Name Miss Doreen J Zydor

Credential NYS CASAC- T, NYCPS

Sex Female

Practice address Callicoon, NY, 12723

Phone (845) 791-0170

Enumeration date Apr 2, 2019

Last updated in NPPES Apr 2, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 33852 (NY) Secondary

175T00000X Peer Specialist Other Service Providers · License NYCPS-P-1777 (NY) Primary

Other identifiers

Identifier	Type	State	Issuer
33852	Other	NY	NYS OASAS
DY28409Z	Medicaid	NY	-
NYCPS-P-1777	Other	NY	NY PEER SPECIALIST

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1831651421 active?

Yes, as of the latest NPPES snapshot, NPI 1831651421 is active (record last updated 2019-04-02).

How do I verify Doreen Zydor's NPI record?

Cross-check NPI 1831651421 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-02.