Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gibran Hamid Mahmud, M.D.

Hematology & Oncology Physician in Centralia, IL · enumerated 2008.

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

National Provider Identifier

1518132489

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Registry record

Entity type Individual (Type 1)

Name Gibran Hamid Mahmud

Credential M.D.

Sex Male

Practice address 1052 M L King Dr, Suite 2, Centralia, IL, 62801

Phone (618) 436-5410

Fax (618) 436-8063

Enumeration date Apr 23, 2008

Last updated in NPPES Dec 5, 2016

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 2011020105 (MO) Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 2011020105 (MO) 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
1518132489	Medicaid	MO	-
1518132489	Medicaid	IL	-

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 Gibran Mahmud practice?

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

What is the NPI number for Gibran Mahmud?

The National Provider Identifier (NPI) for Gibran Mahmud is 1518132489, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-12-05.