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Meet the Doctor

Mark A. Klaassen, M.D., F.A.C.S.

Orthopedic Surgeon Mark Klaassen learned early on what caring for others is all about. The son of missionaries, he grew up in Colombia where the positive impact of helping others was tightly woven into his character. This childhood experience made him fluent in Spanish. He returned home to the U.S. as a 15-year-old to continue his education, culminating in the MD degree he earned from the Indiana University School of Medicine at Notre Dame and the I.U. Medical Center. He completed his orthopedic surgery residency at Lutheran Hospital of Indiana and . . .

My Mission

“I want to score an A+ with all of my patients”

Dr. Klaassen’s Presentations

Dr. Klaassen has given hundreds of presentations on joint replacement and demonstrations of joint surgery in the United States and across the globe including the North, Central….

Making aDifference

Dr. Klaassen is presently involved in five clinical research studies, testing new innovative products and techniques in joint replacement. Studying advances in healthcare to increase….

Patient Videos

Patient Stories

Total Knee Patient Anonymous

I just wanted to take an opportunity to thank you greatly for the service you provided for me. It has been amazing the improvement I am experiencing. A while back before I knew it was a hip problem I guess I felt it was all the aging process and I was wondering with the deterioration in my abilities etc how I would be in another 5 years. .......Read Full Story

Total Hip Patient Anonymous

I have been very active my entire life. A couple of years ago I started having problems with my knee. I live about an hours away from Dr. Klaassen’s office and did not know much about him. When I started to ask around who I should see, I was surprised to hear the recommendation for Dr. Klaassen. Everyone was right. .......Read Full Story

Patient Reviews

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