Dr. Gretzinger graduated from the Michigan State University College of Osteopathic Medicine in 1991. He works in Petoskey, MI and specializes in Emergency Medicine. Dr. Gretzinger is affiliated with Mclaren Northern Michigan.
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Dr. Gretzinger graduated from the Michigan State University College of Osteopathic Medicine in 1991. He works in Petoskey, MI and specializes in Emergency Medicine. Dr. Gretzinger is affiliated with Mclaren Northern Michigan.
MEDICAL SCHOOL
Michigan State University College Of Osteopathic Medicine - 1991
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