Our Physician Partners

Southwest Radiation Oncology Center
7910 W. Jefferson Blvd., Suite 110
Fort Wayne, Indiana 46804
Phone: (877) 437-2408


Nathan Comsia, M.D.

Specialties & Certifications

  • Radiation Oncology (Board Certified)


  • Medical School
    New York Medical College
    Valhalla, New York

  • Internship Hospital
    California Pacific Medical Center
    San Francisco, California

  • Residency Hospital
    Loyola University
    Maywood, Illinois


Dr. Comsia, an experienced radiation oncologist, comes to ROA from Loyola University's Department of Radiation Oncology where he served as Co-Chief Resident. Prior to residency, Dr. Comsia was extensively involved in ground-breaking medical research that included studies on radiation therapy sponsored by the American Cancer Society. Dr. Comsia is a member in ASTRO (American Society for Radiation Oncology), RSNA (Radiological Society of North America), ABS (American Brachytherapy Society), and CRS (Chicago Radiological Society).