Meet the Director

Vincent DiNapoli

Vincent DiNapoli, MD, PhD

Vincent DiNapoli, MD, PhD, is a neurosurgeon with Mayfield Brain & Spine and Director of the Brain Tumor Center at The Jewish Hospital – Mercy Health. He cares for patients with a wide range of neuro-oncologic diseases, including primary brain tumors, meningiomas, metastatic disease to the central nervous system, and blood cancers (lymphoma and leukemia).

Dr. DiNapoli initially hoped to become an architect. But he fell in love with chemistry and biology while an undergraduate at West Virginia University, and he remained at the university for his doctorate and medical degrees in the dual MD/PhD Medical Scientist Program. He went to the University of Cincinnati for his neurosurgical residency, then completed a fellowship in skull base surgery and neuro-oncology at MD Anderson Cancer Center in Houston.

He returned to Cincinnati to launch his career, attracted by the stature of Mayfield and the opportunity to lead the effort in cranial neurosurgery within the Mercy Health System and to cultivate a local and regional center of excellence for patients diagnosed with cancers of the brain and spine.

Dr. DiNapoli raced cars when he was younger, and he once told Venue magazine that if he hadn’t gone into medicine, he would have liked to become a Formula One driver. He enjoys tamer pastimes now, as he and his wife are parents of a baby boy.

About Ronald E. Warnick, MD

Ronald E. Warnick, MD

Ronald E. Warnick, MD, is a neurosurgeon and brain tumor specialist with Mayfield Brain & Spine in Cincinnati. He earned his medical degree with honors from the University of Rochester, completed his neurosurgery residency at New York University, and performed a neuro-oncology fellowship at the University of California, San Francisco. He was a faculty member at the University of Cincinnati (UC) from 1991 to 2017, becoming a full professor in 2001. He held the John M. Tew, MD, Chair in Neurosurgical Oncology and for ten years was Medical Director of the UC Brain Tumor Center. He is currently Co-Director of the Gamma Knife Center at The Jewish Hospital – Mercy Health.

In 1991, Dr. Warnick helped launch one of the first stereotactic radiosurgery programs in the nation. Since then he has performed more than 3,500 radiosurgery procedures for brain tumors and other indications. He has published several landmark articles defining the role of radiosurgery in the management of brain metastases and was one of the pioneers in the development of frameless radiosurgery technology. Under his leadership, Mayfield was awarded membership into the prestigious International Gamma Knife Research Foundation, a consortium of Gamma Knife centers of excellence.

Dr. Warnick served as Chairman of the American Association of Neurological Surgeons/Congress of Neurological Surgeons Section on Tumors from 2005 to 2007 and remains on the Advisory Board. He currently serves on the editorial board of the Journal of Neuro-Oncology and is an ad-hoc reviewer for the Journal of Neurosurgery; International Journal of Radiation Oncology, Biology, and Physics; and World Neurosurgery.

Our Physicians

Karyn Dyehouse

Karyn M. Dyehouse, MD

Karyn M. Dyehouse, MD, is the Chief Medical Officer at OHC, Medical Director for the Oncology Service Line for Mercy Health’s Cincinnati region and is President of the Medical Staff at The Jewish Hospital – Mercy Health. Dr. Dyehouse is board certified in internal medicine, oncology and hematology, and specializes in neuro-oncology, breast cancer, lung cancer, colon cancer, and palliative care.

Dr. Dyehouse received her medical degree from the University of Cincinnati College of Medicine, where she also completed her residency and a fellowship in hematology and oncology.

“I pursued a career in oncology because this specialty is a great blend of rigorous science and the humanistic aspects of patient care. My OHC colleagues and I are on a daily pursuit to identify the best course of treatments for our patients while recognizing that they are moms and dads, aunts and uncles, grandmothers and grandfathers who need compassion and support during a difficult time in their lives,” said Dr. Dyehouse.

Peter Fried

Peter R. Fried, MD

Peter R. Fried, MD, is a board certified radiation oncologist with OHC. He serves as the co-medical director of the Gamma Knife program at The Jewish Hospital – Mercy Health and the medical director of the CyberKnife program at The Urology Group. Dr. Fried led the team of OHC radiation oncologists who worked with The Jewish Hospital – Mercy Health and Mayfield Brain & Spine to bring the ground-breaking Gamma Knife technology to Cincinnati.

After graduating from medical school at the Medical College of Virginia, Dr. Fried completed a residency and fellowship in head and neck cancer at New York University Medical Center. His areas of interest include brain tumors, head and neck cancers and prostate cancer.

“With all the innovations, oncology is constantly advancing. We’ve had incredible outcomes with Gamma Knife, CyberKnife and blood and marrow transplants. With genetics, we are able to understand more about the origin of cancer. There are exciting new developments in immunotherapy treatments. I feel very privileged to work with my colleagues at OHC because I know they all practice with the same commitment to quality as I do,” said Dr. Fried.

Elizabeth Levick

Elizabeth H. Levick, MD

Elizabeth H. Levick, MD, is a board certified radiation oncologist with OHC who serves as Department Director of Radiation Oncology at The Jewish Hospital – Mercy Health. Her specialties include brain tumors, breast cancer, prostate cancer, and central nervous system, thoracic and GI sarcomas and lymphomas.

Dr. Levick received her medical degree from the Medical College of Ohio. She completed her residency at Parkland Memorial Hospital in Dallas, Texas, and her fellowship at the University of Cincinnati Medical Center. She was a member of the OHC team of radiation oncologists who worked with The Jewish Hospital – Mercy Health and Mayfield Brain & Spine to bring Gamma Knife to Cincinnati. She serves on the Breast Program Leadership Board at The Jewish Hospital.

“Radiation oncology is a dynamic field because we are on the forefront of advanced technology for cancer care,” says Dr. Levick. “For example, advancements such as Gamma Knife have allowed us to treat and even cure patients with brain tumors.”

Marc Mosbacher

Marc R. Mosbacher, MD

Marc R. Mosbacher, MD, is a board certified radiation oncologist with OHC. His specialties include Gamma Knife, stereotactic radiosurgery, intensity-modulated radiation therapy (IMRT), and three-dimensional conformal radiation therapy (3D-CRT). His areas of special interest include stereotactic radiosurgery, radiation oncology and thoracic oncology.

Dr. Mosbacher received a bachelor’s degree from Harvard University and a medical degree from Columbia University. He completed his residency and fellowship at Columbia Presbyterian Medical Center (now New York Presbyterian, Columbia University campus). He received extensive training in Elekta Gamma Knife at the University of Pittsburgh Medical Center, Pittsburgh, PA and Elekta ICON training at the Cleveland Clinic in Cleveland, Ohio.

Dr. Mosbacher was a member of the OHC team of radiation oncologists and The Jewish Hospital – Mercy Health to bring Gamma Knife to Cincinnati.

David Pratt

David Pratt, MD

David Pratt, MD, is a board certified radiation oncologist with OHC and serves as Department Chair of Radiation Oncology at OHC. His specialties are brain tumors, lung cancer, GI malignancies, and gynecological malignancies. His areas of special interest include brain tumors, lung cancer and stereotactic radiosurgery.

Dr. Pratt received his bachelor’s degree from University of Utah, Salt Lake City, and his medical degree from the Saint Louis University School of Medicine. He completed his internship at St Louis University Hospital and his residency at Washington University School of Medicine. Dr. Pratt was a member of the OHC team of radiation oncologists who partnered with The Jewish Hospital – Mercy Health to bring Gamma Knife to Cincinnati.

The Tumor Board

Each patient’s treatment depends on the type, size and location of the tumor, so the Brain Tumor Center's specialists meet at a bi-weekly Tumor Board Conference to discuss complex cases, review treatment options and create a treatment plan for each individual patient.

The Jewish Hospital Mercy Health Brain Tumor Center - Tumor Board Group