Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Lester Y Rosenzweig, M.S., R.D., C.D.N.

Registered Dietitian in Schenectady, NY · enumerated 2007.

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

National Provider Identifier

1366592685

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Registry record

Entity type Individual (Type 1)

Name Mr. Lester Y Rosenzweig

Credential M.S., R.D., C.D.N.

Sex Male

Practice address 214 State St, Schenectady, NY, 12305

Phone (518) 372-1160

Fax (518) 372-8939

Enumeration date Jan 11, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 4921577 (NY) Primary

RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD credential

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 1366592685 active?

Yes, as of the latest NPPES snapshot, NPI 1366592685 is active (record last updated 2007-07-08).

How do I verify Lester Rosenzweig's NPI record?

Cross-check NPI 1366592685 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.