What is John Johnson's NPI number?

John Johnson's National Provider Identifier (NPI) is 1336141068, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Johnson's specialty?

John Johnson is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).

Where is John Johnson located?

John Johnson's practice location on file with NPPES is 643 Gold Star Hwy, Groton, CT 06340-6267.

What is John Johnson's phone number?

The practice phone number listed in the NPPES registry for John Johnson is (860) 445-8569.

Is John Johnson's NPI active?

Yes — John Johnson's NPI (1336141068) is active in the NPPES registry as of the last update on 2009-06-30.

IndividualActive

John Johnson, DDS

NPI 1336141068 · General Practice Dentistry · Groton, CT

John Johnson, DDS is a General Practice Dentistry provider in Groton, CT (NPI 1336141068).

Provider details

NPI number: 1336141068
Entity type: Individual
Primary specialty: General Practice DentistryDental Providers
Credential: DDS
Sex: Male
Sole proprietor: Yes
License: 6800 (CT)

Practice location

643 Gold Star Hwy

Groton, CT 06340-6267

Phone: (860) 445-8569

Fax: (860) 446-1890

Street-level locationGet directions

More CT providers

Mailing address

643 Gold Star Hwy

Groton, CT 06340-6267

Specialties & taxonomies

General Practice DentistryPrimary1223G0001XLicense 6800 (CT)
Dental Providers

Profile Score

Detailed profile(91/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
21 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Enumerated: 2005-08-12
Last updated: 2009-06-30

Frequently asked questions

What is John Johnson's NPI number?: John Johnson's National Provider Identifier (NPI) is 1336141068, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is John Johnson's specialty?: John Johnson is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
Where is John Johnson located?: John Johnson's practice location on file with NPPES is 643 Gold Star Hwy, Groton, CT 06340-6267.
What is John Johnson's phone number?: The practice phone number listed in the NPPES registry for John Johnson is (860) 445-8569.
Is John Johnson's NPI active?: Yes — John Johnson's NPI (1336141068) is active in the NPPES registry as of the last update on 2009-06-30.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions