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Dr. Mark T Klucka, D.O.

Family Medicine Physician in Alton, IL · enumerated 2006.

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

National Provider Identifier

1801902432

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Registry record

Entity type Individual (Type 1)
Name Dr. Mark T Klucka
Credential D.O.
Sex Male
Practice address 4 Memorial Dr Ste 230, Alton, IL, 62002
Phone (618) 463-7874
Enumeration date Aug 23, 2006
Last updated in NPPES Sep 19, 2025

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 036077227 (IL) Primary
207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 036.077227 (IL) Secondary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
036077227 Medicaid IL -
100013015 Other IL 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.

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Frequently asked questions

What is the NPI number for Mark Klucka?
The National Provider Identifier (NPI) for Mark Klucka is 1801902432, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Klucka practice?
The practice location on file with NPPES is in Alton, 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 2025-09-19.