MidLantic Urology Expands Cancer Care, Welcomes Two New Oncologists

September 28, 2021

MidLantic Urology is expanding its team of top providers with the recent addition of two new physicians, Gregory C. McMahon, D.O. and Jeffrey B. Walker, M.D., both of whom specialize in treating a variety of urologic cancers.

“MidLantic Urology is excited to have Dr. McMahon and Dr. Walker as a part of our team of talented physicians,” said Jon Mackler, MPA, FACHE, Market Chief Operating Officer at MidLantic Urology. “They each bring a specialized skillset, including expertise in robotic surgery, which further increases our ability to provide the highest-quality and personalized care for our patients.”

Dr. McMahon joined MidLantic Urology in August 2021. He specializes in treating cancers of the genitourinary tract and is skilled in both robotic and open surgery, as well as ablative technologies for prostate cancer. Dr. McMahon’s practice focuses on treating complex malignancies such as prostate, kidney, bladder, adrenal, testis and penile cancer. He is also well-versed in treating benign conditions such as ureteral strictures and benign prostatic hyperplasia (BPH).

An experienced surgeon, Dr. McMahon completed his urologic oncology fellowship at Yale University and his residency training at Rowan University/Jefferson Health, where he served as the chief resident in his final year. Dr. McMahon is a native Boston, MA and currently resides in Newtown Square.

Dr. Walker joined MidLantic Urology in September 2021. He specializes in minimally-invasive robotic techniques for treating prostate cancer, kidney cancer and benign upper tract pathology. He also treats advanced kidney stone disease, benign prostate enlargement and other general urologic conditions.

A graduate of Jefferson Medical College, Dr. Walker went on to complete his residency at Pennsylvania State University, where he served as chief resident for his final year. He then completed advanced minimally-invasive training at the University of Pennsylvania with Dr. David Lee, world-renowned for robotic surgery. In joining MidLantic Urology, Dr. Walker joins his father, Dr. Stephen R. Walker, who practices in Media. A Media native, Dr. Walker currently resides in Newtown Square.

In welcoming Dr. McMahon and Dr. Walker, MidLantic Urology, the largest urology group in Pennsylvania, now boasts 88 high-quality providers practicing at 42 clinical office locations throughout the Greater Philadelphia region. Dr. McMahon practices at the Wynnewood Broomall Ambulatory Surgery locations, and Dr. Walker practices out of the Bala Cynwyd and East Norriton offices.

For more information about MidLantic Urology, please visit www.MidLanticurology.com


MidLantic Urology is one of the largest and most innovative health care providers in Pennsylvania. Our group combines an unprecedented level of top urology specialists with clinical research and state-of-the-art technology to offer the highest quality of personalized care. We believe in highly personalized and compassionate care. Our specialists are by our patient’s side throughout their entire care journey. With 47 locations throughout the region, we strive to provide the most convenient access to all our patients. To learn more about MidLantic Urology, visit https://MidLanticurology.com.

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