Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jefferson Sodin Dexter, DMD

General Practice Dentistry in South Yarmouth, MA · enumerated 2006 · practices at Jefferson S Dexter Dmd PC.

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

National Provider Identifier

1669551156

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Registry record

Entity type Individual (Type 1)

Name Jefferson Sodin Dexter

Credential DMD

Sex Male

Practice address 99 Old Main St, South Yarmouth, MA, 02664

Phone (508) 398-3322

Fax (508) 398-1675

Enumeration date Nov 3, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 20908 (MD) 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 Jefferson Dexter?

The National Provider Identifier (NPI) for Jefferson Dexter is 1669551156, a Type 1 (individual) record in the CMS NPPES registry.

Where does Jefferson Dexter practice?

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

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Jefferson S Dexter Dmd PC General Practice Dentistry · South Yarmouth, MA NPI 1720100456

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.