Our Physicians
Kevin T. Heaton, D.O.
Orthopedic Surgeon
Dr. Heaton is a board-certified orthopedic surgeon, and native to the Klamath Falls area. He is also on the American Osteopathic Board of Orthopedic Surgeons, and a member of the American Osteopathic Academy of Orthopedics. He received his fellowship training in Adult Reconstruction and Joint Replacement from the Arthritis Institute at Good Samaritan Hospital in Los Angeles, California.
Gillian A. Bayley, M.D.
Orthopedic Surgeon
Dr. Bayley is a board-certified orthopedic surgeon fully trained in the treatment of all foot and ankle problems. She obtained her medical degree and residency at the University of Ottawa in Ontario, Canada. Her foot and ankle reconstruction fellowship training was completed at the University of Calgary. She is certified in both Canada and the United States and is an active member of the American Orthopaedic Foot & Ankle Society.
Luke W. Hosack, M.D.
Orthopedic Surgeon
Dr. Hosack is board-certified orthopedic surgeon with a fellowship in total joints. He received his medical degree from University of Illinois College of Medicine, Cum Laude. He also holds a Master in Chemical Engineering with a Bioengineering Focus. In his free time, Dr. Hosack enjoys spending time with family and camping.
Logan R. Koehler, M.D.
Orthopedic Surgeon
Dr. Koehler is a board-certified orthopedic surgeon, with a hand specialty. He completed his Hand Fellowship at Integris Baptist Medical Center in Oklahoma City prior to joining Klamath Orthopedic in 2020.
Fred F. Naraghi, M.D., QME
Orthopedic Surgeon
Dr. Naraghi is a board-certified spine surgeon with more than 20 years of experience. He completed his spine surgery fellowship at the San Francisco Spine Institute and owned his own private practice prior to joining Klamath Orthopedic in 2020.
Jeffrey R. Cummings, M.D.
Orthopedic Surgeon
Dr. Cummings is a board-certified orthopedic surgeon, graduating with honors from Loma Linda University and completing a fellowship in arthroscopy and Sports Medicine at University of California. He served as Major in the Air Force and the Chief of Orthopaedics at Fairchild Air Force Base.
What Patients Say
"I am grateful every day that I can actively use my left arm, since Dr. Karl Knudsen repaired my shoulder. I can’t put into words how much I appreciate it. I would never again have been able to do all of the things I love to do if not for his work. "
I knew I needed to have something done on my knee when I could no longer do the things I love – hunting and fishing. Since my surgery, my pain has reduced significantly. For anyone who is ready to have a joint replacement, there is no need to look outside Klamath Falls. Have your surgery close to home and recover close to home without sacrificing anything
Dr. Knudsen helped me get back to my life. I was told to go to Bend or Medford for this kind of surgery, but I am so glad that I stayed here. My recovery has been outstanding – I wouldn’t go anywhere else.”
I have all the faith in the world in Dr. Heaton. His orthopedic care is outstanding. My care was so superb, I wouldn’t go anywhere else. I’m a runner and a bike rider, and I’m ready to get back at it.
As far as I’m concerned, you don’t get any better than what we have in orthopedic care here in Klamath Falls. I can do anything now.
Explore the local orthopedic options. I can’t even imagine my body going back to the way it was before surgery.”
Two months after my hip replacement I biked a 23 mile trail and was chasing after my grandkids. The best part? I’m not in pain anymore.
I went back to work, without pain, just two weeks after my knee replacement, and was back hunting within six weeks.
