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Office
1010 4th St SW
Ste 305
Mason City, IA 50401Phone+1 641-428-5700Fax+1 641-428-2515
Summary
- Dr. William Riesen, MD is an internist in Mason City, Iowa. He is currently licensed to practice medicine in Iowa and Michigan. He is affiliated with MercyOne North Iowa Medical Center.
Education & Training
University of MichiganResidency, Internal Medicine, 1993 - 1996
Perelman School of Medicine at the University of PennsylvaniaClass of 1993
Certifications & Licensure
IA State Medical License 1996 - 2026
MI State Medical License 1995 - 1999
