Dr. Mark Oyer completed an Adult Reconstruction Hip and Knee Fellowship at the University of Wisconsin Madison School of Medicine and Public Health. During residency, he developed my interest in the orthopedic sub-specialty of total joint replacement. He has special interest in outpatient and minimally invasive surgery, the Direct Anterior Approach for total hip replacement, and complex revision surgery.
Dr. Mark Oyer completed an Adult Reconstruction Hip and Knee Fellowship at the University of Wisconsin Madison School of Medicine and Public Health. During residency, he developed my interest in the orthopedic sub-specialty of total joint replacement. He has special interest in outpatient and minimally invasive surgery, the Direct Anterior Approach for total hip replacement, and complex revision surgery.
Welcome to OrthoIllinois!
I very much look forward to being able to provide your care and help you resume a more pain free and active life! I’d like to share a little background on how I came to be a total joint specialist and the focus of my practice.
I am a long-term Midwesterner, in fact my hometown is Tremont, Illinois, located southeast of Peoria in central Illinois. Growing up, I spent a lot of time working alongside my father, who was a carpenter by trade. I think my earliest influences for a medical career were piqued by my mother. As a nurse, she impressed upon me the difference medical care can make in people’s lives. I also learned the values derived from hard work by helping out on my grandfather’s farm.
As a youth, I also found time for competitive activities and was a three-sport athlete playing football, basketball and baseball. It was through playing sports and sustaining various injuries that required treatment procedures that I was first exposed to orthopedics. With a growing interest in how the body works and heals, I pursued my undergraduate degree in kinesiology from the University of Illinois at Urbana-Champaign as a recipient of two scholarships and graduating with Highest Honors on the Dean’s List.
I followed my undergraduate studies at the University Of Illinois College Of Medicine at Peoria where I earned my medical degree as a Graduate of Distinction. I remained in Illinois when I was accepted by Northwestern University, Feinberg School of Medicine Orthopedic Residency Program in Chicago where I completed both my internship and residency training. I then gained additional advanced training by completing an Adult Reconstruction Hip and Knee Fellowship at the University of Wisconsin Madison School of Medicine and Public Health.
During residency, I developed my interest in the orthopedic sub-specialty of total joint replacement. Of all surgical fields, I believe total joint replacement provides the best results and most importantly, not only provides patients with pain relief, but gives them back the lifestyles they love. As a hip and knee surgeon, I find it an honor and a privilege to return patients’ trust by giving them back the ability to pursue an active life.
In my practice, I have a special interest in outpatient and minimally invasive surgery, the Direct Anterior Approach for total hip replacement, and complex revision surgery. I strive to work with my patients to identify the best option for them, whether surgical or non-surgical treatment, to put an end to arthritic pain and return them to their normal lives once more.
When I am not treating patients, I enjoy playing with my chocolate Labrador, golfing, fishing, watching professional basketball, baseball, and football, and working out. My wife and I are serious foodies and enjoy just hanging out with friends and family.
Thank you for entrusting me with your care and I look forward to helping put an end to your hip and knee pain!

Took great care of me with hip replacement!
Very caring, understanding & answered all my questions. I am extremely happy.
Super good surgeon, and super good personality.
My knee feels like butter on inside after a total knee replacement. Awesome Dr and very detailed to prevent side affects!
I'm having problems after my knee replacement and he is really trying to find solutions.
Dr. Oyer was his usual great personality Loved having him as my surgeon. Took extra time to make sure I had my questions answered and showed me the X-rays Staff was equally as impressed and pleased
Going with Dr. Oyer for my knee replacement was the best decision I could have made. He’s not only a fabulous surgeon, but his bedside is fantastic! I have to have my other knee replaced in a few months, and thanks to him, I’ll be going into that with no trepidation knowing that I’m in great hands!
Kind, caring, thorough and encouraging
Honest and open to questions. He did my knee replacement and did a great job.
Doctor Oyer is an excellent doctor. He takes time with you and answers all your questions. I would highly recommend him to everyone.