HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / MN

DOUGLAS CHALLENER, MD

INFECTIOUS DISEASE

Medical school: MEDICAL COLLEGE OF WISCONSIN

Graduated: 2015

Offers telehealth

NPI: 1396123709

Practice Locations (2)

MAYO CLINIC

200 1ST ST SW

ROCHESTER, MN 559050001

5072842511

MAYO CLINIC HEALTH SYSTEM-NORTHWEST WISCONSIN REGION INC

1400 BELLINGER ST

EAU CLAIRE, WI 547035222

7158385222

Source: CMS National Downloadable File, September 2026.

DOUGLAS CHALLENER, MD | HealthCareAtlasUSA