NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mary L. Gavin, MD

Pediatrics Physician in Newton Square, PA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1881784528

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Mary L. Gavin
Credential MD
Sex Female
Practice address 3855 West Chester Pike, Suite 280, Nemours Dupont Pediatrics, Newton Square, Newton Square, PA, 19073
Fax (302) 651-4945
Enumeration date Oct 13, 2006
Last updated in NPPES Oct 3, 2014

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License C10006711 (DE) Secondary
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License MD418266 (PA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
36790 Medicaid NJ -
4053079 Medicaid MD -
101018361 Medicaid PA -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Mary Gavin?
The National Provider Identifier (NPI) for Mary Gavin is 1881784528, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Gavin practice?
The practice location on file with NPPES is in Newton Square, PA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-10-03.