Extending Quality Care
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Top-tier orthopedic care

OrthoIllinois, a division of OrthoMidwest, is committed to making top-tier orthopedic care accessible to all communities.

To support this mission, we partner with regional hospitals through co-management agreements, bringing our expert orthopedic surgeons to areas where such services were previously unavailable or inconsistent. These partnerships ensure that community members receive skilled, compassionate care locally, reflecting the high standards OrthoIllinois has upheld since 1967. Discover more about our regional hospital orthopedic programs and the OrthoIllinois specialists leading this exceptional care.

OSF Medical Group - Orthopedics in the I-80 Region
Little Company of Mary Center for Health

OSF Medical Group - Orthopedics in the I-80 Region

OrthoIllinois provides the physician and advance practice provider services for the OSF Medical Group’s Orthopedic clinical services in Ottawa, Princeton, Streator, and Peru, Illinois and surgical care through OSF Saint Elizabeth Medical Center in Ottawa, OSF Saint Paul Medical Center in Mendota, and OSF Saint Clare Medical Center in Princeton, Illinois.

OSF Medical Group and Saint Elizabeth Medical Center are part of OSF Healthcare, an integrated health system founded by The Sisters of the Third Order of St. Francis and headquartered in Peoria, Illinois.

OrthoIllinois Specialists

Connor Kasik, DO
Orthopedic Surgeon

Connor Kasik, DO
Kenneth Korcek, MD
Orthopedic Surgeon

Kenneth Korcek, MD
Robert J. Mitchell, DO
Orthopedic Surgeon

Robert J. Mitchell, DO
Leonard Tiger Onsen, MD
Orthopedic Surgeon

Leonard Tiger Onsen, MD

OrthoIllinois surgeons utilize a team approach that allows for the highest quality service and treatment. An integral part of that team are the advance practice providers who serve as an extension of the surgeon’s care. These physician assistants and advance practice registered nurses are highly trained to provide many clinical and hospital services as well as assist the surgeon in surgery. Assisting Drs. Kasik, Korcek, Mitchell, and Onsen are:

  • Debra Pyszka, PA-C
  • Kate Jaegle, APRN
  • Shannon Hiller, APRN
  • Taylor Tuten, PA-C

Little Company of Mary

OrthoIllinois is a division of OrthoMidwest, PLLC. Under OrthoMidwest we provide the physician and advance practice provider clinical services for Little Company of Mary and its Center for Health, located in Evergreen Park, Illinois and surgical care through Little Company of Mary Medical Center.

Little Company of Mary Center for Health and hospital are part of OSF Healthcare, an integrated health system founded by The Sisters of the Third Order of St. Francis and headquartered in Peoria, Illinois.

OrthoMidwest Specialists

Steven J. Fineberg, MD
Orthopedic Surgeon

Steven J. Fineberg, MD

James D. Buschbach, MD
Orthopedic Surgeon

James D. Buschbach, MD