NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. John M Carroll, M.D.

Internal Medicine Physician in Malden, MA · enumerated 2006.

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

National Provider Identifier

1376511717

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. John M Carroll
Credential M.D.
Sex Male
Practice address Malden, MA, 02148
Phone (781) 322-7178
Fax (781) 321-1971
Enumeration date Mar 10, 2006
Last updated in NPPES Jun 2, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 28856 (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
0113867 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 John Carroll practice?
The practice location on file with NPPES is in Malden, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Carroll?
The National Provider Identifier (NPI) for John Carroll is 1376511717, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-02.