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MARK MAHON MD
NPI 1184276966
Pediatrics - Pediatric Gastroenterology in Philadelphia, PA

Active since July 12, 2019
3401 CIVIC CENTER BLVD, DIVISION OF PEDIATRIC GASTROENTEROLOGY, PHILADELPHIA, PA 19104(215) 590-3247 Get Directions Write a Review

NPPES record last updated: December 4, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Dec 4, 2025, Jul 12, 2019 (2 updates tracked since 2019).

About Mark Mahon Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK MAHON MD (NPI 1184276966) is an individual pediatric gastroenterology provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MT224821) and active in the NPI registry since July 2019. He maintains a secondary practice location in Bronx.

NPPES Registry Identity

NPI1184276966
Entity TypeIndividualMale
Primary Taxonomy2080P0206X
Provider Legal NameMARK MAHONCredential: MD
Location Address3401 CIVIC CENTER BLVD, DIVISION OF PEDIATRIC GASTROENTEROLOGYPhiladelphia, PA 19104
Mailing Address3401 Civic Center Blvd, Division Of Pediatric GastroenterologyPhiladelphia, PA 19104 · (215) 590-3247
Phone(215) 590-3247
Sole ProprietorNo
Enumeration DateJuly 12, 2019
Last NPPES UpdateDecember 4, 20252 updates tracked since enumeration
NPPES CertifiedDecember 4, 2025
✔ NPI 1184276966 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPediatrics · Pediatric GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0206X
License✔ Licensed in PA · MT224821
Definition
A pediatrician who specializes in the diagnosis and treatment of diseases of the digestive systems of infants, children and adolescents. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using lighted scopes to see internal organs.
Also ListedPediatricsTaxonomy 208000000X · License MD477537 (PA)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
3401 CIVIC CENTER BLVD, Philadelphia, PA 19104
Open in Google Maps ↗

Secondary Practice Location 1

Location 11400 Pelham Pkwy SBronx, NY 10461-1138 · Phone (718) 918-6315

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

AARON DORFMAN M.D.
Pediatrics (Pediatric Cardiology)
3401 CIVIC CENTER BLVD, CHILDREN'S HOSPITAL OF PHILADELPHIA - CARDIOLOGY
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-4040
MS. NICOLE MARIE KOEPKE CRNP
Nurse Practitioner (Pediatrics)
3401 CIVIC CENTER BLVD, CHILDREN'S HOSPITAL OF PHILADELPHIA - EMERGENCY MED
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1944
DR. CASSANDRA ALYS LIGH MD
Surgery (Plastic and Reconstructive Surgery)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-2208
DR. PREETI SOI
Psychiatry & Neurology (Child & Adolescent Psychiatry)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-7555
ROSALIND USHER M.D.
Pediatrics (Developmental - Behavioral Pediatrics)
3401 CIVIC CENTER BLVD, DIVISION OF DEVELOPMENTAL AND BEHAVIORAL PEDIATRICS
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-6336
DR. MATTHEW DAVID SCHREIER MD
Pediatrics (Pediatric Cardiology)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1000
DR. TERRENCE CALDWELL JR. PHARMD
Pharmacist (Pediatrics)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1000
ALYSSA STIEFEL CRNP
Nurse Practitioner (Pediatrics)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Mahon's NPI number?

The NPI number for Mark Mahon is 1184276966. It was assigned to this individual provider in the NPPES registry on July 12, 2019.

Where is Mark Mahon located?

Mark Mahon practices at 3401 Civic Center Blvd Division Of Pediatric Gastroenterology, Philadelphia, PA 19104. The listed phone number is (215) 590-3247.

What is Mark Mahon's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Gastroenterology, with taxonomy code 2080P0206X.

When was this NPI record last updated?

The NPPES record for Mark Mahon was last updated on December 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.