Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Melissa A Martinez Mateo, M.D.

Gastroenterology Physician in Carbondale, IL · enumerated 2010.

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

National Provider Identifier

1003124280

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Registry record

Entity type Individual (Type 1)

Name Melissa A Martinez Mateo

Credential M.D.

Sex Female

Practice address 2601 W Main St, Carbondale, IL, 62901

Phone (618) 549-5361

Fax (618) 351-4878

Enumeration date Sep 21, 2010

Last updated in NPPES Dec 4, 2025

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 01072250A (IN) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 125056433 (IL) Secondary

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 036139158 (IL) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 11015804A (IN) Secondary

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

How do I verify Melissa Martinez Mateo's NPI record?

Cross-check NPI 1003124280 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1003124280 active?

Yes, as of the latest NPPES snapshot, NPI 1003124280 is active (record last updated 2025-12-04).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-04.