A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).
Learn more about Dr. John Willis:
View the full profile to get information on:
- What's important to you
View full profile
Write a Review
Specialties & Research
Dr. John Willis, MD is board certified in Diagnostic Radiology.
Education & Awards
Dr. Willis graduated from Southern Illinois University, Springfield.
Dr. Willis has 6 hospital affiliations:
- Greenville Regional Hospital
- Franklin Hospital
Similar doctors nearby
- Additional Information
- Dr. John Ryan Willis MD is a male Diagnostic Radiologist, has 13 years of experience and practices in Diagnostic Radiology.
- Where does Dr. John R. Willis practice?
- Dr. John Willis has 2 office locations.
Dr. John Willis practices Diagnostic Radiology near Centralia, IL.
Additional practice locations include: Mount Vernon, IL.
See Centralia Radiologists.