Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mario Rolando Contreras, MD

Anatomic Pathology & Clinical Pathology Physician in Lafayette, IN · enumerated 2005.

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

National Provider Identifier

1841297801

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Registry record

Entity type Individual (Type 1)

Name Mario Rolando Contreras

Credential MD

Sex Male

Practice address 2400 South St, Lafayette, IN, 47904

Phone (765) 448-4319

Fax (765) 448-2921

Enumeration date Jul 6, 2005

Last updated in NPPES Jul 16, 2007

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 01036557A (IN) 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
000000082509	Other	IN	ANTHEM
CB5232	Other	IN	RAILROAD MEDICARE

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 Mario Contreras practice?

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

What is the NPI number for Mario Contreras?

The National Provider Identifier (NPI) for Mario Contreras is 1841297801, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-16.