Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Donald Andrew Somerville, D.M.D.

Prosthodontics in Farmington, CT · enumerated 2008.

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

National Provider Identifier

1265688360

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Registry record

Entity type Individual (Type 1)

Name Dr. Donald Andrew Somerville

Credential D.M.D.

Sex Male

Practice address 263 Farmington Ave, Farmington, CT, 06030

Phone (860) 679-7600

Enumeration date Aug 8, 2008

Last updated in NPPES Aug 8, 2008

Taxonomy & licenses

1223P0700X Prosthodontics Dental Providers · License 009926 (CT) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Donald Somerville?

The National Provider Identifier (NPI) for Donald Somerville is 1265688360, a Type 1 (individual) record in the CMS NPPES registry.

Where does Donald Somerville practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-08-08.