Dr. Simeon Jaggernauth

  • DO
  • Medical Oncologist
  • Spoken languages English


Scientist, innovator, medical oncologist and former adjunct professor of Oklahoma State University Centers for Health Sciences, believes it is absolutely important for patients to learn as much as they can about their illness.

Dr. Jaggernauth (aka Dr. Jag) earned his Doctorate in Medicine from Oklahoma State University Center for Health Sciences College of Medicine. He then completed an internship at OSU Medical Center, his internal medicine residency at the University of Oklahoma and a subspecialty fellowship in medical oncology at the University of Louisville in Kentucky. Dr. Jag is an allopathic board certified medical oncologist and internal medicine physician by the American Board of Medical Specialties (ABMS). He is also board certified in mechanical engineering by the American Society of Mechanical Engineering (ASME). He worked in research and development prior to becoming a physician and co-invented several systems for water emulsion and solid particle detection counters for high pressure hydraulic systems used by Union Pacific Railroads® and NASA®. The co-invention of the Digital Moisture Alert® (dMA) and the Ferrous Contam Alert® (fCA) led to patents granted for both devices. U.S.Patent (#5,563,337). His Apps have been featured in the iTunes App Store® (iChemo Deluxe) for computing chemotherapy doses to help doctors with their chemotherapy dosing and to prevent medical errors in oncology.

Dr. Jag has served as principal investigator and sub investigator for multiple clinical trials on pharmaceutical agents used to treat metastatic breast, colon and lung cancers. He started the medical oncology fellowship at Oklahoma State University and Cancer Treatment Centers of America. He was responsible for training doctors to become cancer fighters as medical oncologists. He served as the Chairman of the Cancer Committee and member of the Medical Executive Committee at CTCA. Prior to joining Landmark Cancer Center, he was part of the MD Anderson Affiliated Network in Tulsa, Oklahoma. He also serves as a medical consultant on the scientific advisory board of several biotech companies including Genentech, General Electric Healthcare, Bristol-Myers Squibb, Celgene and NovoCure. He is the founder and chairman of the non-profit organization, the H8 Cancer Foundation.

Dr. Jag has presented throughout the country as a speaker on new oncologic treatments available to patients. He has been published in the Journal of Clinical Oncology and Breast Cancer Wellness Magazine and has also been featured in Oklahoma Magazine, FOX, ESPN, Good Morning Texas on the Dallas ABC affiliate and Kansas City Live. As an active leader of the community, Dr. Jag has been a guest speaker for the American Lung Association Lung Force, volunteered for the Tulsa Project Woman and raced in the local Susan G. Komen Race for the Cure®. He was also featured in the Tulsa World with the debut of the Ken Burns film “The Emperor of All Maladies” when the PBS series aired nationwide. Dr. Jag loves spending time with his wife of over 25 years and their four children. He also enjoys playing video games with his kids, wake surfing, running, making movies with his drones and motorcycle riding.



  • Oklahoma State University Center for Health Sciences


  • University of Oklahoma, Tulsa School of Community Medicine, Internal Medicine


  • University of Louisville School of Medicine, Hematology/Oncology

Expertise And Interests


  • Oncology, Hematology and Internal Medicine


Awards and honors

  • 2007 Physician of the Year Cancer Treatment Centers of America