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Dr. John C Wuellner

Internal Medicine Physician in Alton, IL · enumerated 2006.

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

National Provider Identifier

1558378927

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Registry record

Entity type Individual (Type 1)
Name Dr. John C Wuellner
Sex Male
Practice address 2 Memorial Dr, Suite 220, Alton, IL, 62002
Phone (618) 474-1723
Fax (618) 462-6989
Enumeration date Aug 1, 2006
Last updated in NPPES Mar 29, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036061448 (IL) Primary

Other identifiers

Identifier Type State Issuer
0360614483 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.

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Frequently asked questions

Where does John Wuellner practice?
The practice location on file with NPPES is in Alton, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Wuellner?
The National Provider Identifier (NPI) for John Wuellner is 1558378927, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-29.