Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. John C Wuellner

Individual provider Internal Medicine Physician · NPI 1558378927

Dr. John C Wuellner is an Internal Medicine in Alton, Illinois. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 1979, 47 years ago. Practices with Salida Hospital District, a 100-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
47
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
Licensed in
IL
In the registry since
2006

Practice location Address checks out

2 Memorial Dr Ste 220
Alton, IL 62002-6723
Phone: (618) 474-1723
Fax: (618) 462-6989
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036061448 (IL)

Record details

NPI number1558378927
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedAugust 1, 2006
Last updated in NPPESMarch 29, 2024
Certification dateMarch 29, 2024
Mailing address670 Mason Ridge Center Dr, Ste. 300, Saint Louis, MO 63141-8573

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 1979 (47 years in practice)
Group practice Salida Hospital District — 100 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Alton