Dr. Clark maintains a busy orthopedic practice focused on enabling patients to overcome their physical challenges—whether they are related to injury or the aging process. In private practice since 2000, Dr. Clark has been at the forefront of adopting hip and knee arthroplasty innovations. One of the first adopters of the direct anterior approach to total hip replacement in the Midwest, he has focused on less-invasive surgical techniques, as well as robotic knee replacement. Among the first to perform MAKOplasty, a partial knee replacement technique that involves a robotic arm, in his home state of Iowa, Dr. Clark has extensive experience in joint care. With a special interest in advanced surgical outcome metrics and rapid recovery protocols, Dr. Clark has become a leader in the UnityPoint Health system in patient length-of-stay, typically discharging his joint patients either same-day or next-day following surgery.

Beginning with his residency at Michigan State University and continuing at the University of Northern Iowa, Dr. Clark has been treating Division I athletes for over two decades, including numerous All-Americans and some who compete currently at the professional level in football and basketball. An expert in sports-related injuries, Dr. Clark has been on the sidelines for more than 500 Division I football, basketball, and wrestling competitions, serving as the Team Physician for the University of Northern Iowa and Wartburg College since 2000.

Highly competitive by nature, Dr. Clark has an intense passion for helping his patients to overcome their injuries or impairments and reach their individual victories.

A former college athlete, Dr. Clark knows what it is like to compete in sports at a high level. After sports, he channeled that drive into the field of orthopedic surgery. For Dr. Clark, surgery is an opportunity to pursue victory for his patients. He encourages every patient, regardless of age or circumstance, to adopt that same competitive approach—to ambitiously pursue victory over injury and the physical effects of aging.

Dr. Clark has served as the Team Physician for UNI athletics since 2000. In that role, he has attended more than 400 football and basketball games, including the 2005 Division I FCS National Championship game and UNI Basketball’s 2010 appearance in the NCAA Sweet Sixteen. As the physician for collegiate wrestling’s National Dual Meet Championship from 2005-2011, Dr. Clark treated elite wrestlers from around the country. Additionally, Dr. Clark cares for Wartburg College and Upper Iowa University athletes as Team Physician.


Fellowship A.O. International Trauma Fellowship; Humboldt University, Berlin, Germany
2000 Residency (Orthopedic Surgery) – Michigan State University

Garden City Hospital, Lansing, MI
(Pediatric Orthopedics) Children’s Hospital of New Orleans, New Orleans, LA
(Trauma and Joint Arthroplasty) Florida Orthopedic Institute, Tampa General Hospital, Tampa, FL

1996 Internship (Rotating) – Michigan Capital Regional Medical Center
1995 D.O. Des Moines University
1989 B.A. Beta Beta Beta, Mortar Board Society, Football Letter-winner (Economics & Business), Cornell College


2013 Recertified American Osteopathic Board of Orthopedic Surgery (Passed first examination)
2003 Clinical A.O.B.O.S. – Passed first examination
2001 Oral A.O.B.O.S. – Passed first examination
2000 Written A.O.B.O.S. – Passed first examination


2002 – Clark, J.A. and Bremner, B.R.B.; “Fatal Warfarin-Induced Skin Necrosis After Total Hip Arthroplasty.” Journal of Arthroplasty.


Chief of Surgery UnityPoint-Allen Hospital
Chief of Orthopedics UnityPoint-Allen Hospital
Head Team Orthopedic Surgeon Wartburg College
Orthopedic Surgeon, All Sports University of Northern Iowa
Oral Examiner American Osteopathic Board of Orthopedic Surgery


Adjunct Assistant Professor of Orthopedics Des Moines University
1995-2000 – Clinical Instructor, Orthopedics Michigan State University
Guest Lecturer University of Northern Iowa Athletic Training


American Osteopathic Academy of Orthopaedics (A.O.A.O.)
American Osteopathic Association (A.O.A.)
AO Alumni Association (A.O.A.A.)
Iowa Orthopaedic Society


Direct anterior approach to total hip replacement
Less-invasive knee replacement surgery
Rapid recovery protocols
Orthopedic sports medicine
Knee and shoulder arthroscopy




Practicing clinical orthopedics since 2001, Brenda is a licensed nurse practitioner with more than 17 years of experience in the field. Brenda graduated in 1995 with her Bachelor of Science in Nursing, followed by a Master of Science in Nursing in 2005, both from Allen College. Working closely with Dr. Clark, she provides treatment and sideline care for athletes from the University of Northern Iowa and Wartburg College. Brenda brings clinical expertise, comprehensive knowledge, and a friendly smile to the clinic!


08/03 – 05/05 — Allen College of Nursing, Waterloo, IA — MSN
08/92 – 05/95 — Allen College of Nursing, Waterloo, IA — BSN
08/88 – 05/92 — University of Northern Iowa, Cedar Falls, IA — B.A. in Biology


2005 — ARNP


1994 — Iowa RN
2005 — Iowa ARNP


01/08 – present  — Cedar Valley Medical Specialists, P.C., Department of Orthopedic Surgery, Cedar Falls, IA — Staff ARNP
10/05 – 01/08 — Cedar Valley Medical Specialists, P.C., Department of Orthopedic Surgery, Waterloo, IA — Staff ARNP
08/01 – 10/05 — Cedar Valley Medical Specialists, P.C., Department of Orthopedic Surgery, Waterloo, IA — Staff RN
06/95 – 07/01 — Allen Memorial Hospital, Waterloo, IA — Staff RN


Working in the clinical setting, Abby uses her background in Athletic Training to help evaluate all sorts of injuries. She is frequently called on to perform brace fitting, apply and remove casts, and to prepare and assist in the administration of injections. She works closely with patients to communicate and educate on injury cause, pathology, treatment options, and rehabilitation plans. Abby also works as a liaison between practitioners and other in-house health care providers to ensure an efficient clinic and a positive experience for patients. Abby is a positive, personable, and energetic presence in clinic. It is her mission to provide high-quality, patient-oriented health care.


05/16 – University of Iowa, Iowa City, IA – B.S. in Athletic Training, Minor in Psychology
05/18 – University of Northern Iowa, Cedar Falls, IA – M.S. in Athletic Training


08/16-05/17 – The University of Northern Iowa Football, Cedar Falls, IA – Graduate Assistant Athletic Trainer
08/17-05/18 – The University of Northern Iowa Football, Cedar Falls, IA – Graduate Assistant Athletic Trainer

  • Assumed the responsibilities of a certified athletic trainer in the collegiate setting: performed injury evaluation, established injury rehabilitation programs and return-to-play protocols, and initiated physician referrals. Attended physician appointments to ensure the most efficient physiological and psychological return to play process for the injured athlete.
  • Advocated for the athlete by providing communications between the athlete, coaching staff, and physician regarding the athlete’s injury and return-to-play status, ensuring an understanding among the injured athlete and their support team.
  • Attended all team practices, home and away competitions, and rehabilitation sessions to provide consistent, reliable, trustworthy, and professional healthcare for the athlete.

08/16-05/18 – The University of Northern Iowa Athletic Training Program, Cedar Falls, IA
08/17-05/18 – The University of Northern Iowa Football, Cedar Falls, IA – Graduate Assistant Athletic Trainer

  • Acted as a clinical instructor for undergraduate athletic training students and promoted student personal and educational growth by providing an environment which allowed for questioning and practice of the competencies and skills of a student athletic trainer.


08/16-08/18 – University of Iowa Athletic Training Clinical Rotations

  • University of Iowa: Women’s Basketball, Men’s Gymnastics, Women’s Soccer
  • Iowa City High School
  • Iowa City West High School        


Spring 2016-Present – Board of Certification: Certified Athletic Trainer
Spring 2016-Present – Licensed Athletic Trainer: Iowa
Spring 2016-Present – American Heart Association: CPR/AED for professional rescuer Certified


Spring 2016-Present – National Athletic Training Association Member


To date, patients from 25 states have trusted Dr. Clark to provide orthopedic surgical services that are less-invasive, feature lower pain scores, and are treated with limited opiate multimodal pain management.