Dr. Gregory C. McMahon, D.O. 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. His 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).
Dr. Gregory C. McMahon, D.O. 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. His 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).
The reviews listed below were collected independently of MidLantic Urology through rater8. Each review represents an authentic and verified patient experience.
I was a bit surprised that the doctor didn’t actually examine me or provide me with a new prescription for tadslafil. He did propose trying flomax… and then set me up for a test that required me not to be taking it.
(1 week ago)
Feb-2026
Excellent doctor and experience.
(1 week ago)
Feb-2026
Explained the procedure and results. He is an expert in his field. 5 stars.
(1 month ago)
Jan-2026
Super thoughtful, thorough, cool calm and collected.
(1 month ago)
Jan-2026
Dr.McMahon is very compassionate, professional, understanding, patient, kind, and knowledgeable. He made sure things were explained in a way I could understand. He treated me with respect and dignity. I couldn’t have asked for a better doctor.
(1 month ago)
Jan-2026
Excellent
(1 month ago)
Jan-2026
Skilled caring doctor
(1 month ago)
Jan-2026
Awesome professional at his work!!
(1 month ago)
Jan-2026
Dr. McMahon is the best.
(1 month ago)
Jan-2026
he was great definitely will be my dr
(2 months ago)
Dec-2025
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Broomall
1974 Sproul Road Suite 106 Broomall, PA 19008
Wynnewood
100 Lancaster Ave Medical Office Building - East, Suite 361 Wynnewood, PA 19096
Dr. Gregory C. McMahon, D.O. 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. His 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). He takes pride in providing every patient and their families with exceptional care and support.
Dr. McMahon is an experienced surgeon completing a urologic oncology fellowship at Yale University after completing his residency training at Rowan University/Jefferson Health where he served as the chief resident in his final year. Throughout his career he has published and presented at numerous academic conferences nationwide.
In his free time Dr. McMahon enjoys spending time with his family in the community he serves.
AREAS OF EXPERTISE –Prostate Cancer, retzius sparing prostatectomy –Bladder Cancer –Kidney Cancer –Adrenal Cancer –Ureteral Strictures –Robotic Surgery
UNDERGRADUATE EDUCATION Springfield College, MA
GRADUATE EDUCATION National Institutes of Health, MD
MEDICAL DEGREE Philadelphia College of Osteopathic Medicine, PA
RESIDENCY Rowan University / Jefferson Health, NJ
FELLOWSHIP Urologic Oncology at Yale University, CT
I was a bit surprised that the doctor didn’t actually examine me or provide me with a new prescription for tadslafil. He did propose trying flomax… and then set me up for a test that required me not to be taking it.
Excellent doctor and experience.
Explained the procedure and results. He is an expert in his field. 5 stars.
Super thoughtful, thorough, cool calm and collected.
Dr.McMahon is very compassionate, professional, understanding, patient, kind, and knowledgeable. He made sure things were explained in a way I could understand. He treated me with respect and dignity. I couldn’t have asked for a better doctor.
Excellent
Skilled caring doctor
Awesome professional at his work!!
Dr. McMahon is the best.
he was great definitely will be my dr