Quick answers
- Which hospitals does Patrick J. McMahon work at?
- Medicare's official clinician data lists Patrick J. McMahon at 1 hospital: Cooper University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Patrick J. McMahon see patients?
- Medicare's clinician data lists 5 practice locations, including Camden, NJ, Marlton, NJ and Hammonton, NJ. Call before your visit to confirm the address.
- What is Patrick J. McMahon's specialty?
- Medicare lists Dermatology as the primary specialty, and also Emergency Medicine and Pediatric Medicine.
- Does Patrick J. McMahon accept Medicare assignment?
- Yes. Medicare's clinician data says Patrick J. McMahon accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Patrick J. McMahon?
- (856) 596-0111, as listed in official Medicare / NPI Registry data.
- What is Patrick J. McMahon's NPI number?
- 1245423854. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Patrick J. McMahon works
Medicare's Facility Affiliation Data lists Patrick J. McMahon at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cooper University HospitalCamden, NJ · Acute Care Hospital · CCN 310014
Practice locations
Addresses where Patrick J. McMahon is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Cooper PlzCamden, NJ 08103
- 10000 Sagemore Dr, Suite 10101Marlton, NJ 08053 (856) 596‑0111
- 2 Cooper PlzCamden, NJ 08103 (855) 632‑2667
- 3 Cooper PlzCamden, NJ 08103 (856) 342‑2544
- 640 S White Horse PikeHammonton, NJ 08037 (856) 596‑0111
Group practices
Medicare enrollment lists Patrick J. McMahon as a member of these groups (CMS data updated 2026-10-02).
- CMC Department of Medicine Group PA478 clinicians in the group
- Heymann, Manders, Green and Sommer, LLC.14 clinicians in the group
Specialties
- Dermatologyprimary
- Emergency Medicinealso
- Pediatric Medicinealso
Other dermatologists in Camden
Clinicians with the same Medicare primary specialty in Camden, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York At Stony Brook, School Of Medicine |
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1245423854 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians