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Dr. John F Kerwin, DDS

General Practice Dentistry in Warren, RI · enumerated 2008.

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

National Provider Identifier

1437322690

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Registry record

Entity type Individual (Type 1)
Name Dr. John F Kerwin
Credential DDS
Sex Male
Practice address 634 Main Street, Warren, RI, 02885
Phone (401) 245-5825
Fax (401) 245-0936
Enumeration date Apr 9, 2008
Last updated in NPPES Apr 9, 2008

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License DEN01871 (RI) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier Type State Issuer
14551 Other RI UHC
83861 Other RI BCRI
WD12166 Medicaid RI -

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 is the NPI number for John Kerwin?
The National Provider Identifier (NPI) for John Kerwin is 1437322690, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Kerwin practice?
The practice location on file with NPPES is in Warren, RI. 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 2008-04-09.