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

DR. GREG ERIC JOHNSON D.M.D.
NPI 1669432142
Dentist - General Practice in Hartford, CT

Q: What is Greg Johnson's NPI number?

The NPI number for Greg Johnson is 1669432142. It was assigned to this individual provider in the NPPES registry on March 27, 2006.

Q: What is Greg Johnson's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Q: When was this NPI record last updated?

The NPPES record for Greg Johnson was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 46 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.

Active since March 27, 2006

104 PRESTON ST, HARTFORD, CT 06114(860) 296-1500(860) 296-5795 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

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About Dr. Greg Eric Johnson D.m.d. NPPES

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

DR. GREG ERIC JOHNSON D.M.D. (NPI 1669432142) is an individual general practice provider in Hartford, Connecticut, licensed in Connecticut (5795) and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1669432142

Entity TypeIndividualMale

Primary Taxonomy1223G0001X

Provider Legal NameDR. GREG ERIC JOHNSONCredential: D.M.D.

Location Address104 PRESTON STHartford, CT 06114-2500

Mailing Address104 Preston StHartford, CT 06114-2500 · (860) 296-1500 · Fax (860) 296-5795

Phone(860) 296-1500

Fax(860) 296-5795

Sole ProprietorNo

Enumeration DateMarch 27, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1669432142 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers

Taxonomy Code1223G0001X

License✔ Licensed in CT · 5795

Definition

A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

104 PRESTON ST, Hartford, CT 06114

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Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SONAM HASIJA DDS, MPH, BDS,

Dentist (General Practice)

104 PRESTON ST, 1E
HARTFORD, CT 06114

Capitol Planning Region (860) 296-1500

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 Greg Johnson's NPI number?

The NPI number for Greg Johnson is 1669432142. It was assigned to this individual provider in the NPPES registry on March 27, 2006.

Where is Greg Johnson located?

Greg Johnson practices at 104 Preston St, Hartford, CT 06114. The listed phone number is (860) 296-1500.

What is Greg Johnson's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

When was this NPI record last updated?

The NPPES record for Greg Johnson was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 46 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.