Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nicholas Colosi, MD

Specialist in Marion, IL · enumerated 2006.

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

National Provider Identifier

1780658690

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Registry record

Entity type Individual (Type 1)

Name Nicholas Colosi

Credential MD

Sex Male

Practice address 2401 W Main St, Marion, IL, 62959

Phone (618) 997-5311

Fax (618) 998-5662

Enumeration date Feb 15, 2006

Last updated in NPPES Nov 5, 2021

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 31672 (MO) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Nicholas Colosi?

The National Provider Identifier (NPI) for Nicholas Colosi is 1780658690, a Type 1 (individual) record in the CMS NPPES registry.

Where does Nicholas Colosi practice?

The practice location on file with NPPES is in Marion, 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 2021-11-05.