Dr. Sean B. O'donnell

Charles Reninger, MD, specializes in hematology oncology and is board-certified in medical oncology by the American Board of Internal Medicine. He practices at UPMC Hillman Cancer Center - Pinnacle and is affiliated with UPMC Memorial, UPMC Lititz, UPMC Hanover, UPMC Carlisle, UPMC West Shore, UPMC Community Osteopathic, and UPMC Harrisburg. Dr. Reninger received his medical degree from the Medical College of Pennsylvania and completed his residency program at the Hospital of the University of Pennsylvania, followed by a fellowship program at the University of Florida College of Medicine. Dr. Reninger is rated as a Distinguished provider by MediFind in the treatment of Clear Cell Sarcoma. His top areas of expertise are Familial Colorectal Cancer, Lung Cancer, Small Cell Lung Cancer (SCLC), and Pleuropulmonary Blastoma.

Mark Keating, MD, is a medical oncologist specializing in tumors and diseases of the blood. He has a particular expertise in the diagnosis and treatment of gastrointestinal, kidney, bladder, breast, lung, head and neck, and prostate cancers, as well as chronic leukemia, lymphoma, brain tumors, and benign hematologic disorders. Dr. Keating is rated as a Distinguished provider by MediFind in the treatment of Clear Cell Sarcoma. His top areas of expertise are Monoclonal Gammopathy of Undetermined Significance (MGUS), Schnitzler Syndrome, Paget Disease of the Breast, and Non-Hodgkin Lymphoma.

Eugene Muchnik, MD, specializes in hematology oncology and medical oncology and is board-certified in hematology, internal medicine and medical oncology by the American Board of Internal Medicine. He is affiliated with UPMC Wellsboro, UPMC Cole and UPMC Williamsport. Dr. Muchnik completed his fellowship and residency at Strong Memorial Hospital University of Rochester and medical degree at UMDNJ University Hospital. Dr. Muchnik is rated as an Advanced provider by MediFind in the treatment of Clear Cell Sarcoma. His top areas of expertise are Lung Cancer, Colorectal Cancer, Pleuropulmonary Blastoma, and Familial Colorectal Cancer.