Dr. Duffy graduated from the Michigan State University College of Human Medicine in 1973. He works in Marshfield, WI and specializes in Nephrology. Dr. Duffy is affiliated with Ministry St Josephs Hospital.
Medical School: Michigan State University College of Human Medicine; Graduated 1973
Please verify insurance information directly with your doctor's office as it may change frequently.
1000 N Oak Ave
Marshfield, WI 54449