Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Leslie Esther Klyachman, MD

Gastroenterology Physician in East Patchogue, NY · enumerated 2019.

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

National Provider Identifier

1700346376

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Registry record

Entity type Individual (Type 1)

Name Dr. Leslie Esther Klyachman

Credential MD

Sex Female

Practice address 285 Sills Road, Buildings 5-6, Suit H, Nyu Langone Medical Associates, East Patchogue, NY, 11772

Phone (516) 589-4494

Enumeration date Mar 20, 2019

Last updated in NPPES Jun 24, 2025

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 326020-01 (NY) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

How do I verify Leslie Klyachman's NPI record?

Cross-check NPI 1700346376 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1700346376 active?

Yes, as of the latest NPPES snapshot, NPI 1700346376 is active (record last updated 2025-06-24).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-24.