Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Caroline Anne Mcfadden, M.D.

Allergy Physician in Somerville, MA · enumerated 2007.

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

National Provider Identifier

1437362993

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Registry record

Entity type Individual (Type 1)

Name Dr. Caroline Anne Mcfadden

Credential M.D.

Sex Female

Practice address 40 Holland St, Somerville, MA, 02144

Phone (617) 629-6250

Enumeration date May 8, 2007

Last updated in NPPES Feb 23, 2012

Taxonomy & licenses

207KA0200X Allergy Physician Allopathic & Osteopathic Physicians · License 213251 (MA) 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
2144077	Medicaid	MA	-

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

Where does Caroline Mcfadden practice?

The practice location on file with NPPES is in Somerville, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Caroline Mcfadden?

The National Provider Identifier (NPI) for Caroline Mcfadden is 1437362993, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-23.