Skip to main content
John Michalak, MD, Oncology, Sioux City, IA, MercyOne Siouxland Medical Center


Oncology Sioux City, IA


Dr. Michalak 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. Michalak's full profile

Already have an account?

Education & Training

  • Fitzsimons Army Medical Center
    Fitzsimons Army Medical CenterResidency, Internal Medicine, 1971 - 1977
  • University of California, Irvine, School of Medicine
    University of California, Irvine, School of MedicineClass of 1971

Certifications & Licensure

  • IA State Medical License
    IA State Medical License 1980 - 2015

Publications & Presentations


Professional Memberships

Hospital Affiliations