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Nisar Ahmad, M.D.

Hematology (Internal Medicine) Physician in Harlingen, TX · enumerated 2006.

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

National Provider Identifier

1659390045

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Registry record

Entity type Individual (Type 1)
Name Nisar Ahmad
Credential M.D.
Sex Male
Practice address 1719 Treasure Hills Blvd, Harlingen, TX, 78550
Phone (956) 364-2131
Fax (956) 364-2141
Enumeration date Jul 18, 2006
Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License N4887 (TX) Secondary
207RH0000X Hematology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License N4887 (TX) Primary
207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License N4887 (TX) Secondary
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
419512400 Medicaid MD -
962456-01 & 02 Other MD BLUE CROSS/BLUE SHIELD
S062-0381 Other MD BLUE CROSS/BLUE SHIELD - REGIONAL
374773501 Medicaid TX -
8HE963 Other TX BLUE CROSS/BLUE SHIELD OF TEXAS
0070245 Medicaid OH -

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.

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Frequently asked questions

Where does Nisar Ahmad practice?
The practice location on file with NPPES is in Harlingen, TX. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Nisar Ahmad?
The National Provider Identifier (NPI) for Nisar Ahmad is 1659390045, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.