Dr. Gregory McMahon, DO

Dr. McMahon practices at Midlantic Urology in Plymouth Meeting, Pennsylvania.

Dr. McMahon's NPI, 1295116218, was assigned on June 16, 2015. Dr. McMahon graduated from Philadelphia College of Osteopathic Medicine in 2015. Dr. McMahon holds Connecticut license 64741.

Dr. McMahon's primary practice is Midlantic Urology, at 140 W Germantown Pike, Plymouth Meeting, PA 19462 in Montgomery County. The practice phone is (484) 530-0205.

Dr. McMahon's primary practice is Midlantic Urology in Plymouth Meeting, Pennsylvania. Dr. McMahon is also affiliated with Chester County Hospital. The medical group on file is MidLantic Urology. Dmand AI also links Dr. McMahon to 4 more hospitals, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. McMahon practices, 5 sites in all. Vendor and product names are available with a free account.

Urology is Dr. McMahon's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. McMahon is licensed in Connecticut.

CMS data shows 3,469 Medicare services from Dr. McMahon across 23 procedure codes in 2024, for 858 Medicare patients. Medicare paid $185,865 for them.

CMS counts 858 Medicare patients who saw Dr. McMahon in 2024. The largest group is 75 to 84, with 353 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.48, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. McMahon's median patient age at 73, with 15% women.

In 2024, Dr. McMahon wrote 2,088 Medicare Part D claims for 492 patients. 71% of them were for generic drugs. CMS names the drug for 2,008 of them, across 23 drugs with 11 or more claims each, at $4,588,241 in total drug cost. In 2023, CMS named 1,397 claims across 22 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 90 out of 100 for Dr. McMahon for performance year 2024, reported as part of a group. Dr. McMahon accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. McMahon as offering telehealth. CMS counts 22 procedures of prostate resection by Dr. McMahon, more than 84% of the clinicians it reports for that procedure.

Dmand AI links 14 papers to Dr. McMahon, published from 2012 to 2025. 2021 was the busiest year, with 2. The most frequent topics are DNA, Mitochondrial, Genetic Variation and Haplotypes. Dr. McMahon has published most often in Rev Urol. Dr. McMahon's most frequent co-authors are Gordon A. Brown, DO, Michael Stuart Leapman, MD and Benjamin Newell Breyer, MD.

CMS Open Payments shows 369 general payments to Dr. McMahon from 42 drug and device companies from 2020 to 2025. Consulting fees make up the largest share, 55% of the total. Janssen Pharmaceuticals, Inc paid the most, $57,211.

Dr. McMahon graduated from Philadelphia College of Osteopathic Medicine in 2015.