Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Patrick McMahon, MD

Individual provider Dermatology Physician · NPI 1245423854

Patrick McMahon, MD practises Dermatology in Marlton, New Jersey. Graduated from State University of New York at Stony Brook, School of Medicine in 2005, 21 years ago. Practices with Cmc Department of Medicine Group PA, a 474-clinician group and accepts Medicare assignment. Licensed in New Jersey and Pennsylvania.

Years since qualifying
21
Trained at
State University of New York at Stony Brook, School of Medicine
Licensed in
NJ, PA
In the registry since
2007
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

10000 Sagemore Dr Ste 10101
Marlton, NJ 08053-3944
Phone: (856) 596-0111
Fax: (856) 596-7194
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence 25MA09188100 (NJ)
Dermatology Physician Taxonomy 207N00000X · Licence MD432156 (PA)
Pediatric Dermatology Physician Taxonomy 207NP0225X · Licence 25MA09188100 (NJ)
Pediatrics Physician Taxonomy 208000000X · Licence MD432156 (PA)

Record details

NPI number1245423854
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 27, 2007
Last updated in NPPESJune 17, 2025
Certification dateJune 17, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDERMATOLOGY
Also practisesEMERGENCY MEDICINE, PEDIATRIC MEDICINE
Medical schoolSTATE UNIVERSITY OF NEW YORK AT STONY BROOK, SCHOOL OF MEDICINE
Graduated 2005 (21 years in practice)
Group practice Cmc Department Of Medicine Group Pa — 474 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients67
Services billed 143 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $53,803 10 payments
Travel and Lodging $3,920 9 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $1,782 63 payments · a meal or drink at a meeting or visit, not a fee
Education $103 2 payments · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Cmc Department of Medicine Group PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 474 clinicians in the practice; 12 are shown here.

Other providers in Marlton