Mark Oyer, MD

Mark Oyer, MD

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!

BACHELOR’S DEGREE University of Illinois Urbana-Champaign
MEDICAL DEGREE University of Illinois College of Medicine at Peoria
RESIDENCY Northwestern University, Feinberg School of Medicine, Chicago, IL
ADULT RECONSTRUCTION HIP & KNEE REPLACEMENT FELLOWSHIP University of Wisconsin Madison School of Medicine and Public Health

Insurance Questions?

Dr. Oyer and Ortho Illinois accept multiple insurance providers. To see a list of insurances accepted click here. Contact your insurance carrier for you specific plan details.


  • Board eligible, American Academy of Orthopaedic Surgeons

Hospital Affiliations

  • Ascension Saint Joseph – Elgin
  • Mercyhealth Javon Bea Hospital
  • Ortho Illinois Surgery Center
  • OSF Saint Anthony Medical Center
  • UW Health Northern Illinois / SwedishAmerican Hospital
  • Van Matre Encompass Health Rehabilitation Hospital