Orthopedic Surgeon Dr. Dennis Collis at Slocum Center for Orthopedics & Sports Medicine

Dennis K. Collis, MD


"I have enjoyed being part of the growth and development of Orthopedic Fracture Clinic, Orthopedic Healthcare Northwest, and now the Slocum Center over the past 45 years. Doctors Slocum, Larson, and James were the orthopedists who brought me to this medical community, and the commitment to provide the very best specialty orthopedic care has been very fulfilling for me."

Education & Training

  • Residency: General Surgery, Hennepin County General Hospital, Minneapolis, MN, 1964 – 1965; Orthopedic Surgery, The University of Iowa, Iowa City, IA, 1967 – 1970
  • Medical School: Washington University School of Medicine, St. Louis, MO, Medical Doctorate, 1963
  • Undergraduate: Grinnell College, Grinnell, IA, Bachelor of Arts, Chemistry & Biology, 1955
  • Military: Captain, United States Air Force, Department of Orthopaedics, Mather AFB, CA, 1965 – 1967 (Air Force Commendation Medal)


  • Certified by the American Board of Orthopaedic Surgery
  • Licensed by the Oregon and Missouri State Boards of Medical Examiners


  • American Academy of Orthopaedic Surgeons
  • Association of Bone and Joint Surgeons 
  • Hip Society 
  • Orthopaedic Research & Education Foundation
  • American Association of Hip & Knee Surgeons

Hospital Staff Privileges

  • Sacred Heart Medical Center, Eugene, OR
  • Slocum Center for Orthopedics & Sports Medicine physician and surgeon since 1970


  • Wall Lake, IA

Favorite Activities

In my free time, I enjoy golfing, traveling, and watching Oregon sports.

Patient Testimonials

Arthritis knee problem. Examined and recommendation was made. I am mostly OK now. Thank you, Doctor Collis.

I received excellent care at Slocum for help with hip pain. Scheduling was easy. There was a long line when I showed up for my appointment due to staff shortage, but they made up for the wait with wonderful compassion. Dr. Collis and his staff were quick to explain my procedures and very supportive of my recovery. Both appts. helped my bursitis pain and I am grateful for the help I received.

Timely appointment, well managed facility. X-ray first, short wait, saw the provider, and received excellent advice.

Very impressed with the efficiency from the moment we stepped in the door. You are a class act.