UPMC Hillman Cancer Center Welcomes Medical Director, Radiation Oncologist

Williamsport, Pa., August 11, 2026 – UPMC welcomes Brett Lewis, M.D., medical director and radiation oncologist, to the UPMC Hillman Cancer Center team in Williamsport.
“Dr. Lewis brings the depth of leadership and clinical expertise that is essential to advancing radiation oncology services for patients in north central Pennsylvania,” said Patti Jackson-Gehris, market president, UPMC North Central Pa. “His arrival strengthens our ability to provide high-quality, compassionate cancer care close to home, where access truly matters. With the support of UPMC Hillman Cancer Center’s nationally recognized resources, innovation, and technology, our local team is well positioned to make a meaningful impact for patients and families across the region.”
Dr. Lewis earned his medical degree and a doctorate in biochemistry from Albert Einstein College of Medicine in the Bronx, N.Y. He completed an internship and residency in internal medicine at Beth Israel Medical Center, N.Y., as well as a residency in radiation oncology at the Cancer Institute of New Jersey at Robert Wood Johnson University Hospital in New Brunswick, N.J.
Most recently, Dr. Lewis served as chief and medical director of radiation oncology at Mountainside Hospital in Montclair, N.J., worked with the radiation oncology department at John Theurer Cancer Center in Hackensack, N.J., and held several academic positions with Hackensack Meridian Health School of Medicine in Nutley, N.J.
To make an appointment with Dr. Lewis at the UPMC Hillman Cancer Center in Williamsport, call 570-326-8470. To learn more about cancer care services at UPMC Hillman Cancer Centers in North Central Pennsylvania, visit UPMC.com/CancerNCPA.




