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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ahsen Sheikh, M.D.

Internal Medicine Physician in Geneseo, NY · enumerated 2006.

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

National Provider Identifier

1659328979

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Registry record

Entity type Individual (Type 1)
Name Ahsen Sheikh
Credential M.D.
Sex Male
Practice address 50 E South St, Geneseo, NY, 14454
Phone (585) 243-5109
Fax (585) 243-5124
Enumeration date May 30, 2006
Last updated in NPPES Jan 20, 2016

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 234105 (NY) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
02603616 Medicaid NY -

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 1659328979 active?
Yes, as of the latest NPPES snapshot, NPI 1659328979 is active (record last updated 2016-01-20).
How do I verify Ahsen Sheikh's NPI record?
Cross-check NPI 1659328979 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 2016-01-20.