Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Yan Leyfman, MD

Q: What is the NPI number for Yan Leyfman?

The National Provider Identifier (NPI) for Yan Leyfman is 1598414039, a Type 1 (individual) record in the CMS NPPES registry.

Student in an Organized Health Care Education/Training Program in Rockville Centre, NY · enumerated 2022.

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

National Provider Identifier

1598414039

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Registry record

Entity type Individual (Type 1)

Name Yan Leyfman

Credential MD

Sex Male

Practice address 609 Merrick Rd, Rockville Centre, NY, 11570

Phone (516) 632-3797

Fax (516) 632-4190

Enumeration date Mar 22, 2022

Last updated in NPPES Mar 22, 2022

Taxonomy & licenses

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

Where does Yan Leyfman practice?

The practice location on file with NPPES is in Rockville Centre, NY. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Yan Leyfman?

The National Provider Identifier (NPI) for Yan Leyfman is 1598414039, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-22.