NPPES file of Aug 9, 2026

Patrick McMahon, M.D.

Dermatology Physician · Marlton, NJ

Patrick McMahon, M.D. is a dermatology physician with a practice address in Marlton, New Jersey, and NPI 1245423854, issued on Aug 27, 2007. Check the license (New Jersey 25MA09188100, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1245423854
Name
Patrick McMahon
Credential
M.D.
Primary taxonomy
Dermatology Physician 207N00000X
License numbers
25MA09188100 NJ
MD432156 PA
Self-reported in NPPES; status is on the state search
Practice location
10000 Sagemore Dr Ste 10101, Marlton, NJ 08053
Phone
(856) 596-0111
Enumerated
Aug 27, 2007
Record last updated
Jun 17, 2025
Fax
(856) 596-7194
Medicare enrollment
Enrolled (PECOS I20121120000289); accepts Medicare assignment
Medical or professional school
State University Of New York At Stony Brook, School Of Medicine, 2005
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 10000 Sagemore Dr Ste 10101

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Donald Baker, MDDermatology Physician1922101351
  2. Gabrielle Beach, PA-CPhysician Assistant1881300168
  3. Alyssa Cirucci, PA-CPhysician Assistant1144855214
  4. Justin Green, MDDermatology Physician1104894872
  5. Warren Heymann, MDDermatopathology Physician1144297318
  6. Camille Introcaso, MDDermatology Physician1912067836

Verify Patrick McMahon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
    Search for license 25MA09188100
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New Jersey license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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89% fewer Medicare Part D claims than the average dermatology physician in 2024

87 Medicare Part D claims for 19 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.

  1. Patrick McMahon87
  2. Specialty average797

Most prescribed

  1. Ketoconazole16 claims
  2. Cosentyx Unoready Pen12 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $39,564.76

83 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Patrick McMahon$39,565
  2. Specialty average$8,545

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Cmc Department OF Medicine Group PACamden, NJ
  2. Heymann, Manders, Green And Sommer, LLC.Marlton, NJ

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Patrick McMahon among 421 dermatology physician records in New Jersey

Patrick McMahon, M.D. is one of 421 dermatology physician records with a practice address in New Jersey. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 54% of them.

  • NPI issued2007 · 54% of these records are older, 38% newer
  • In a Medicare fileYes · 86% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2005 · median 2001 among the 312 with a school on file
  • Record last updated2025 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatology Physician providers in New Jersey

There are 421 dermatology physician records in New Jersey.

The 8 dermatology physician records with the nearest ZIP codes

  1. Donald Baker, MDMarlton, NJ 080531922101351
  2. Anna Calderone, PA-CMarlton, NJ 080531487394193
  3. Kelli Danowski, D.O.Marlton, NJ 080531508155300
  4. Sandra Elder, M.D.Marlton, NJ 080531538122668
  5. Justin Green, MDMarlton, NJ 080531104894872
  6. Camille Introcaso, MDMarlton, NJ 080531912067836
  7. Mytrang Li, MD, PHDMarlton, NJ 080531851971998
  8. Steven Manders, MDMarlton, NJ 080531457329104

Common questions

What is Patrick McMahon, M.D.'s NPI number?

Patrick McMahon, M.D.'s National Provider Identifier (NPI) is 1245423854, issued on Aug 27, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Patrick McMahon, M.D. located?

The NPPES record lists a practice address at 10000 Sagemore Dr Ste 10101, Marlton, NJ, 08053. Phone: (856) 596-0111. Providers update this record themselves, so call before visiting.

How can I verify Patrick McMahon, M.D.'s license?

NPPES lists New Jersey license number 25MA09188100, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Patrick McMahon, M.D. prescribe under Medicare Part D?

In 2024, Patrick McMahon, M.D. had 87 Medicare Part D claims for 19 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.