Karl Guter, MD


(406) 454-2171

Accepting New Patients


Karl, MD

Dr. Guter is accepting new patients and referrals at the Great Falls Clinic Specialty Center, at 3000 15th Avenue South. For more information or to schedule an appointment, please call (406) 454-2171.  

“Dr. Guter and his staff are absolutely FIRST RATE. Clear and complete diagnosis, candor, explanation, and plan for treatment. Reasonable and thorough.” – Brian, Current Patient

“Very very impressed with the whole experience. It was my first time using Great Falls Clinic. Dr. Guter was wonderful and explained more to me in one visit than I had in my previous entire visits during my chemotherapy at another clinic. The staff was courteous starting with the front desk. Dr. Guter really put my mind at ease and I valued his expertise, his judgment, and his sincerity and appreciated the extra time he took with me to quell my fears moving forward as a bladder cancer survivor.” – Rachel, Current Patient

Dr. Guter specializes in medical oncology, adult blood disorders, solid tumors and all forms of cancer. He has been practicing with the Great Falls Clinic since 1977. Dr. Guter has also been providing outreach oncology for the Fort Harrison VA Hospital since 1981. He actively participates in clinical research studies to help further advance medicine.

Dr. Guter received his medical degree at Saint Louis University Medical School in 1968. During his years of service 1968 to 1971, Dr. Guter achieved the rank of Captain as a Medical Officer for the United States Army Reserve. He completed his Fellowship in Medical Oncology at the University of Wisconsin in 1977 and soon after moved to Great Falls to begin his practice. Dr. Guter is married to Dr. Colleen Marron, a pediatrician at the Great Falls Clinic, who he shares two wonderful children with.


Great Falls Clinic Specialty Center
3000 15th Avenue South
Great Falls, MT 59405
(406) 454-2171


  • Medical Oncology
  • Adult Blood Disorders
  • Solid Tumors


  • Saint Louis University School Of Medicine, 1968
  • Straight Medicine Internship, Indiana University Medical Center, Indianapolis, Indiana
  • Medical Residency, University of Cincinnati Medical Center Cincinnati, Ohio
  • Neurology Fellowship, Cleveland Clinic, Cleveland, Ohio
  • Hematology Fellowship, University of Cincinnati Medical Center, Cincinnati, Ohio
  • Medical Oncology Fellowship, University of Wisconsin, Madison, Wisconsin


  • American Board of Internal Medicine, 1987
  • American Board of Medical Oncology, 1977
  • Advanced Achievement in Internal Medicine


  • American Society of Clinical Oncology


  • Captain, U.S.A.R. General Medical Officer