01. Doctor Overview

Doctor Overview

Dr. John M. Schallenkamp is a radiation oncologist and the medical director of the Billings Clinic Cancer Center in Billings, Montana. Dr. Schallenkamp joined Billings Clinic in 2005 and became board-certified in radiation oncology the following year.

Dr. Schallenkamp received his medical degree from Medical College of Wisconsin in 2000, followed by an internship at St. Lukes Medical Center in Milwaukee, Wisconsin and a residency at Mayo Clinic in Rochester, Minnesota. He specializes in gamma knife radiosurgery and stereotactic body radiation therapy, both of which can be used to treat mesothelioma or the metastasis of mesothelioma.

02. Fast Facts

Doctor Fast Facts

Main Specialty: Radiation Oncology

Other Interests & Specialties: Brachytherapy, breast cancer, gastrointestinal cancer, lung cancer, prostate cancer, gamma knife radiosurgery and stereotactic body radiation therapy.

Certifications, Awards & Accolades: American Board of Radiology Certified in Radiation Oncology, member of the American Brachytherapy Society, member of the American Society for Radiation Oncology, member of the American Medical Association, member of the European Society for Therapeutic Radiology and Oncology, member of the Montana Medical Association

Education & Experience:

  • Residency in Radiation Oncology at the Mayo Clinic
  • Internship at Aurora Health Care
  • Internship at St. Luke’s Medical Center
  • Medical Degree from the Medical College of Wisconsin
03. Publications


Quality of Life Analysis of a Radiation Dose-Escalation Study of Patients With Non-Small-Cell Lung Cancer: A Secondary Analysis of the Radiation Therapy Oncology Group 0617 Randomized Clinical TrialJAMA Oncology. March 2016;2(3):359-67. doi: 10.1001/jamaoncol.2015.3969

Incidence of radiation pneumonitis after thoracic irradiation: Dose-volume correlatesInternational Journal of Radiation Oncology, Biology, Physics. February 2007;67(2):410-6. doi: 10.1016/j.ijrobp.2006.09.030