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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. SONJA ELLIS DDS
NPI 1851645865
Dentist in Oxford, CT

Active since October 30, 2012
276 OXFORD RD, OXFORD, CT 06478(475) 270-9086 Get Directions Write a Review

NPPES record last updated: September 10, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Sep 10, 2026, May 14, 2024, Oct 19, 2018 (3 updates tracked since 2018).

About Dr. Sonja Ellis Dds NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. SONJA ELLIS DDS (NPI 1851645865) is an individual dentist in Oxford, Connecticut, licensed in Connecticut (14847) and active in the NPI registry since October 2012.

NPPES Registry Identity

NPI1851645865
Entity TypeIndividualFemale
Primary Taxonomy122300000X
Provider Legal NameDR. SONJA ELLISCredential: DDS
Location Address276 OXFORD RDOxford, CT 06478-1956
Mailing Address276 Oxford Rd Ste 2Oxford, CT 06478-1956 · (203) 463-4309 · Fax (203) 828-6449
Phone(475) 270-9086
Sole ProprietorNo
Enumeration DateOctober 30, 2012
Last NPPES UpdateSeptember 10, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 10, 2026
✔ NPI 1851645865 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers
Taxonomy Code122300000X
License✔ Licensed in CT · 14847
Definition
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
276 OXFORD RD, Oxford, CT 06478
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and more.Insurance ›

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Sonja Ellis's NPI number?

The NPI number for Sonja Ellis is 1851645865. It was assigned to this individual provider in the NPPES registry on October 30, 2012.

Where is Sonja Ellis located?

Sonja Ellis practices at 276 Oxford Rd, Oxford, CT 06478. The listed phone number is (475) 270-9086.

What is Sonja Ellis's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

What insurance does Sonja Ellis accept?

Health plans from Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas, Guardian and Humana and 1 other insurer list Sonja Ellis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Sonja Ellis was last updated on September 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.