IVCH Medical Group Center for Orthopedic Excellence


Dr. Connor Kasik earned a degree in molecular and cellular biology at the University of Illinois before receiving a medical degree from the Lake Erie College of Osteopathic Medicine in Bradenton, Florida. Dr. Kasik completed his orthopedic surgery residency at McLaren Greater Lansing, a hospital in Lansing, Michigan, associated with Michigan State University. He went on to complete a fellowship in orthopedic surgery sports medicine at Allegheny General Hospital in Pittsburgh. Dr. Kasik is an Illinois Valley native who attended high school at St. Bede Academy.
Dr. Robert J. Mitchell is a board-certified orthopedic surgeon who earned his medical degree at the Chicago College of Osteopathic Medicine. He completed a four-year residency in orthopedic surgery at Midwestern University-Chicago College of Osteopathic Medicine that included work at Chicago’s Northwestern Memorial Hospital, Weiss Memorial Hospital, and University of Chicago Hospital as well as work at Little Company of Mary Hospital and Columbia Olympia Fields Hospital and Medical Center. Before entering medical school, Dr. Mitchell graduated cum laude from St. Norbert College in Wisconsin.

Dr. Mitchell is an Illinois Valley native. He and his three children live in Peru.

Dr. Connor Kasik


Dr. Connor Kasik
Orthopedic Surgeon
Illinois Valley Orthopedics

Dr Robert J Mitchell


Dr. Robert J. Mitchell
Orthopedic Surgeon
Illinois Valley Orthopedics

Catherine Renk, P.A.-C.

Catherine Renk, P.A.-C., is a board-certified physician assistant who has been part of the Illinois Valley Orthopedics team since 1990. She is board-certified and has a master’s degree in physician assistant studies with a specialty in orthopedics from the University of Nebraska Medical Center at Omaha. She had earlier graduated from the physician assistant program at Wichita State University.

Ms. Renk and her husband, Jim, have two children and live in Peru.

Debra Pyszka, P.A.-C

Debra Pyszka, P.A.-C., earned her bachelor’s degree in physician assistant studies from Midwestern University in Downer’s Grove. She became board-certified in 1999 and has been part of the Illinois Valley Orthopedics medical practice since 2005. She also is part of the staff at the Hygienic Institute Community Health Center.

A resident of Granville, Ms. Pyszka and her husband, David, are the parents of three children.