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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mason J Carp, MD

Gynecology Physician in Harrisburg, PA · enumerated 2006 · practices at Mason J Carp MD.

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

National Provider Identifier

1407959620

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Registry record

Entity type Individual (Type 1)
Name Dr. Mason J Carp
Credential MD
Sex Male
Practice address 4212 Linglestown Rd, Harrisburg, PA, 17112
Phone (717) 657-7025
Fax (717) 657-8086
Enumeration date Sep 6, 2006
Last updated in NPPES Sep 25, 2020

Taxonomy & licenses

207VX0000X Obstetrics Physician Allopathic & Osteopathic Physicians · License MD023053E (PA) Secondary
207VG0400X Gynecology Physician Allopathic & Osteopathic Physicians · License MD023053E (PA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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.

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Frequently asked questions

What specialty is Mason Carp?
Mason Carp is registered in NPPES with the primary taxonomy of Gynecology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-25.