Skip to main content
William Gretzinger, DO, Emergency Medicine, Petoskey, MI

William K Gretzinger DO


Physician

Join to View Full Profile
  • 416 Connable Ave"# Er"Petoskey, MI 49770

  • Phone+1 231-487-4000

  • Fax+1 616-975-9827

Are you Dr. Gretzinger?

Join over one million U.S. Physicians, Nurse Practitioners and PAs, already on Doximity.

  • Gain access to free telehealth tools, such as our "call shielding" and one-way patient texting.
  • Connect with colleagues in the same hospital or clinic.
  • Read the latest clinical news, personalized to your specialty.

Summary

  • Dr. William Gretzinger, DO is a board certified emergency medicine physician in Petoskey, Michigan. He is currently licensed to practice medicine in Michigan, Illinois, and Ohio.

Education & Training

  • Mercy St Vincent Medical Center/Mercy Health Partners
    Mercy St Vincent Medical Center/Mercy Health PartnersResidency, Emergency Medicine, 1992 - 1995
  • Michigan State University College of Osteopathic Medicine
    Michigan State University College of Osteopathic MedicineClass of 1991

Certifications & Licensure

  • MI State Medical License
    MI State License 1993 - 2027
  • IL State Medical License
    IL State License 2014 - 2017
  • OH State Medical License
    OH State License 1992 - 1996
  • Emergency Medicine
    American Board of Emergency Medicine Emergency Medicine