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Dr. Grewell is on Doximity

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Education & Training

  • University of Toledo
    University of ToledoInternship, Transitional Year, 1986 - 1987
  • College of Osteopathic Medicine of the Pacific
    College of Osteopathic Medicine of the PacificClass of 1985

Certifications & Licensure

  • MT State Medical License
    MT State License 1988 - 2025
  • MI State Medical License
    MI State License 1986 - 2002
  • OH State Medical License
    OH State License 1986 - 1988
  • AOA Board of Family Physicians Family Practice and Osteopathic Manipulative Medicine

Professional Memberships

Hospital Affiliations