Skip to main content
Mark Dion, MD, Radiation Oncology, Clinton, IA, MercyOne Clinton Medical Center

MarkWilliamDionMD

Radiation Oncology Clinton, IA

Assistant Professor, Radiation Oncology, University of Iowa College of Medicine

Dr. Dion is on Doximity

As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.

  • Connect with other colleagues in the same hospital or clinic
  • Search all U.S. specialist profiles and refer a patient
  • Read the latest clinical news and earn CME/CEU credits

See Dr. Dion's full profile

Already have an account?

Education & Training

  • University of Iowa Hospitals and Clinics
    University of Iowa Hospitals and ClinicsResidency, Radiation Oncology, 1987 - 1990
  • Naval Medical Center (San Diego)
    Naval Medical Center (San Diego)Residency, Otolaryngology - Head and Neck Surgery, 1978 - 1981
  • Naval Medical Center (San Diego)
    Naval Medical Center (San Diego)Internship, Transitional Year, 1977 - 1978
  • University of Colorado School of Medicine Anschutz Medical Campus
    University of Colorado School of Medicine Anschutz Medical CampusClass of 1977

Certifications & Licensure

  • IA State Medical License
    IA State Medical License 1986 - 2025
  • CA State Medical License
    CA State Medical License 1982 - 2024
  • MN State Medical License
    MN State Medical License 1996 - 2022
  • NC State Medical License
    NC State Medical License 2000 - 2001
  • MT State Medical License
    MT State Medical License 1994 - 1997
  • CO State Medical License
    CO State Medical License 1983 - 1997
  • WY State Medical License
    WY State Medical License 1994 - 1997
  • American Board of Radiology Radiation Oncology

Hospital Affiliations