Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Caroline B Mastro, MD

Family Medicine Physician in Little Egg Harbor, NJ · enumerated 2006.

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

National Provider Identifier

1407938780

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Registry record

Entity type Individual (Type 1)

Name Caroline B Mastro

Credential MD

Sex Female

Practice address 279 Mathistown Rd, Little Egg Harbor, NJ, 08087

Phone (609) 296-1101

Enumeration date Oct 19, 2006

Last updated in NPPES Dec 12, 2024

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 25MA07903600 (NJ) 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
0075094	Medicaid	NJ	-
223016655	Other	-	TAX ID

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 Caroline Mastro?

The National Provider Identifier (NPI) for Caroline Mastro is 1407938780, a Type 1 (individual) record in the CMS NPPES registry.

Where does Caroline Mastro practice?

The practice location on file with NPPES is in Little Egg Harbor, NJ. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-12-12.