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Numaan Mahmood, MD

Internal Medicine Physician in Downers Grove, IL · enumerated 2023.

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

National Provider Identifier

1780375642

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Registry record

Entity type Individual (Type 1)
Name Numaan Mahmood
Credential MD
Sex Male
Practice address 1100 31st St, Downers Grove, IL, 60515
Phone (630) 469-9200
Enumeration date May 19, 2023
Last updated in NPPES Jun 3, 2026

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License R80243 (AZ) 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.

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Frequently asked questions

What is the NPI number for Numaan Mahmood?
The National Provider Identifier (NPI) for Numaan Mahmood is 1780375642, a Type 1 (individual) record in the CMS NPPES registry.
Where does Numaan Mahmood practice?
The practice location on file with NPPES is in Downers Grove, IL. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-03.