Orthopedic Institute / Meet our Physician Assistants

Meet our Physician Assistants

Meet Orthopedic Institute's trained, licensed physician assistants. They perform tasks that might otherwise be performed by physicians or under the direction of a supervising physician.

Lee Arnold, PA-C	Lee joined Orthopedic Institute in 1997. He earned a degree in electronic technology from Northwestern Electronics Institute in Minneapolis and in applied sciences from Kirkwood Community College in Cedar Rapids, Iowa, before completing the PA degree program at the University of Osteopathic Medicine and Health Sciences in Des Moines.

Michael Harris, OT, CST	Michael joined Orthopedic Institute in 1993. He served as a Hospital Corpsman/Orthopedic Technician in the U.S. Navy and is a graduate of Southeast Technical Institute’s Certified Surgical Technician program.
Mark Heine, MS, PA-C	Mark joined Orthopedic Institute in 2003. He earned degrees in microbiology/biology from South Dakota State University before completing his PA degree from the University of South Dakota and masters in PA studies from the University of Nebraska.
Patrick Heiser, PA-C	Patrick joined Orthopedic Institute in 2007. He earned a nursing degree from the University of South Dakota and a BS degree in Physicians Assistant Studies from the University of Nebraska.
Chad Hemminger, MS, PA-C	Chad joined Orthopedic Institute in 2006. He earned a degree in biology from St. John's University and a master of science PA degree from the University of Iowa.
Alissa Koronkiewicz, MS, PA-C	Alissa joined Orthopedic Institute in 2004. She earned a degree in biology from the University of South Dakota, and a master of science PA degree from Rosalind Franklin University of Medicine and Science in Chicago.
Karl Kreutzmann, PA-C	Karl joined Orthopedic Institute in 2001. He earned a nursing degree and completed the PA program at the University of Texas, and he received residency training at the Bone & Joint Institute in Chicago.
Scott Rawson, MS, ATC, PA-C	Scott joined Orthopedic Institute in 2000. He received degrees in sports medicine/athletic training from the University of Charleston and in health/physical education from Marshall University, both in West Virginia, before completing his PA degree at the University of South Dakota.
Chad Scott, MS, PA-C	Chad joined Orthopedic Institute in 2001. He earned degrees in biology/psychology and in PA studies from the University of Iowa.
Dayna Semchenko, MS, ATC, PA-C	Dayna joined Orthopedic Institute in 2002. She earned a degree in athletic training from North Dakota State University and a masters degree in physicians assistant studies from Des Moines University.
David Sprecher, PA-C	David joined Orthopedic Institute in 1987. He is a graduate of the PA program at the University of Wisconsin Medical School in Madison.
Craig Steinborn, PA-C	Craig joined Orthopedic Institute in 1980. He earned a degree in biology from Augustana College and a health science/PA degree from Wichita State University in Kansas.
Christopher Tibbetts, MS, PA-C	Chris joined Orthopedic Institute in 1994. He earned degrees from the University of North Texas and Baylor College of Medicine, with certification as a PA from NCCPA.