Orthopedic Institute Physicians

Michael J. Adler, M.D.

Michael J. Adler, M.D.

Dr. Adler is a Lennox native and after spending time in Florida obtaining his fellowship in total joints and total joint revision surgery and Minnesota to complete his orthopedic residency, he is happy to return to Sioux Falls and his roots.

Dr. Adler specializes in joint replacement and joint revision surgery. He has a special interest in anterior (from the front) total hip replacement and minimally invasive total knee arthroplasty.

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Keith M. Baumgarten, M.D.

Keith M. Baumgarten, M.D.

“As an athlete in high school and college, I spent a lot of time around sports medicine physicians.  I was greatly impressed with how they helped me and other athletes get back into the game.  Since I’ve always loved the challenge of making people better, the decision to enter orthopedics was pretty much a foregone conclusion.  Today, I’m still very active with athletics, both as a participant and vicariously, through my patients.”

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James T. Brunz, M.D.

James T. Brunz, M.D.

Dr. Brunz specializes in the treatment of neuropathy, joint, neck and back related pain, and spinal cord stimulator implants. His practice provides interventional pain services for both diagnostic and therapeutic purposes. He is fellowship trained in pain management from the University of Iowa.

Dr. Brunz has been selected as a Key Opinion Leader for St. Jude Medical in the field of Neuromodulation. This is a select group of physicians who are chosen because of their expertise in the field of neuromodulation.

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Walter O. Carlson, M.D. MBA

Walter O. Carlson, M.D. MBA

“I was raised on an Indian Reservation in Northern Minnesota.  I received much encouragement along the way from my parents, our family doctor, professors at Concordia College, and mentors at the Mayo Clinic.  Their unswerving support, along with my natural interest in science and health care, led me to a career in orthopedics.  A career that I have enjoyed for the past 30 years in Sioux Falls.”

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K. C. Chang, M.D.

K. C. Chang, M.D.

“I would like to take a moment to tell you why I chose medicine as a career.  My father is a physician, so I was naturally intrigued with the possibility of making medicine my career.  When I asked my father for advice, he strongly suggested that I consider specializing in something I was both very good at and that I enjoyed doing.  I really enjoy physiatry, so I guess I’m following dad’s advice.”

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R. Blake Curd, M.D.

R. Blake Curd, M.D.

“As a kid, I was fascinated by medicine.  A family friend was an OR nurse and suggested I volunteer at my local hospital.  I thought I wanted to become an emergency room doctor, but in medical school I found that I really enjoyed orthopedics and surgery the most.  I like helping fix people from the start of their treatment to their final recovery.”

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Evan N. Hermanson, M.D.

Evan N. Hermanson, M.D.

Dr. Hermanson joined Orthopedic Institute in 2007. He is fellowship trained in advanced arthroscopic surgery and reconstruction of the shoulder, hip and knee. In addition to his arthroscopic practice he performs unicompartmental and total knee, total shoulder, and reverse total shoulder replacements. He is currently the team physician for Southwest Minnesota State University and O’Gorman High School.

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Tom D. Howey, M.D.

Tom D. Howey, M.D.

Dr. Howey has a bachelor of science degree from South Dakota State University. He received his medical degree from Washington University School of Medicine in St. Louis. He completed a residency in orthopedic surgery at the University of South Florida and the University of New Mexico in 1991 and completed a one year fellowship in hand surgery at the University of New Mexico in 1992.

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Daniel C. Johnson, M.D.

Daniel C. Johnson, M.D.

“I believe that it is a privilege to be entrusted the orthopedic care of an individual. It is my responsibility to make an accurate diagnosis, discuss all options and then, in partnership with a well-informed patient, embark on the treatment plan that will produce the best, safest, and timeliest recovery. My staff and I strive to accomplish this goal in a respectful, kind, and compassionate fashion.”

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Mitchell C. Johnson, D.O.

Mitchell C. Johnson, D.O.

“I grew up in a family of physicians, so my interest in medicine was natural. A back injury prompted me to enter into the field of chiropractic medicine for seven years that later evolved into devoting my energy and skills to orthopedic medicine.”

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David B. Jones Jr., M.D.

David B. Jones Jr., M.D.

“Do to others what you would want them to do to you’ and ‘the best interest of the patient is the only interest to be considered’ are two principles that have been ingrained in me and continue to influence my approach to caring for patients. As a hand and orthopedic surgeon, my focus is on addressing problems of the hand and upper extremity. “

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Peter A. Looby, M.D.

Peter A. Looby, M.D.

“It seems like a career in medicine has always been my destiny. My grandfather and great grandfather were small town physicians in South Dakota and my dad was a practicing OB/GYN in Sioux Falls. As a youth, I suffered three broken arms from various injuries and then blew out two knees playing football that required surgery. So, I guess my interest in orthopedics was inspired by first-hand experience.”

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Matthew J. McKenzie, M.D.

Matthew J. McKenzie, M.D.

“I would like to take a moment to tell you why I chose orthopedics as my career. I grew up in a small town in central South Dakota where my father was a veterinarian and although I grew up and admired the work he did, I was not sure I wanted to follow in his footsteps. At the age of 16, I had a significant injury to my right knee. I became intrigued with the way an orthopedic surgeon took me from being nearly incapacitated and unable to get around and training me back to health where I was able to resume normal activities in a relatively short period of time. I eventually decided to enter medical school and progress through my orthopedic training with a goal of providing the same type of treatment to my patients.”

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Corey P. Rothrock, M.D.

Corey P. Rothrock, M.D.

“I don’t want to see you for my hip arthritis, you are a cancer doctor…..”  Dr. Rothrock chuckles when he remembers the words of one patient.  Dr. Rothrock knows full well what it takes to be a cancer doctor – patience, understanding, meticulous planning, ingenuity, and execution. These are the attributes of the best surgeons intent on removing a tumor, performing a knee scope, replacing a knee, or revising a previous surgery. “My training and patient experiences have taken me to the edge of the specialty and beyond.  I know that all the difficulties and challenges that my patients and I encounter in my oncology practice benefit every patient who I see.”

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Eric S. Watson, M.D.

Eric S. Watson, M.D.

Dr. Watson joined Orthopedic Institute in 2004. After completing his residency at the University of Nebraska – Creighton University, he practiced orthopedic medicine in Kansas City, MO, where he was team physician for major league soccer Sporting K.C. (formerly known as Kansas City Wizards).

Dr. Watson specializes in care of the foot and ankle, and also general orthopedics. In addition to his extensive medical commitments, he enjoys reading, fishing, traveling, and spending time with his family.

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Timothy M. Zoellner, M.D.

Timothy M. Zoellner, M.D.

“My practice is founded on the treatment and care of sports related injuries, gender specific knee surgery, minimally invasive knee replacement, arthroscopic surgery, as well as general orthopedics.”

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