What is David Johnston's NPI number?

David Johnston's National Provider Identifier (NPI) is 1245212471, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is David Johnston's specialty?

David Johnston is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).

Where is David Johnston located?

David Johnston's practice location on file with NPPES is 158 Danbury Rd, Ridgefield, CT 06877-3227.

What is David Johnston's phone number?

The practice phone number listed in the NPPES registry for David Johnston is (203) 438-9915.

Is David Johnston's NPI active?

Yes — David Johnston's NPI (1245212471) is active in the NPPES registry as of the last update on 2012-09-06.

IndividualActive

David Johnston, DO

NPI 1245212471 · General Practice Physician · Ridgefield, CT

David Johnston, DO is a General Practice Physician provider in Ridgefield, CT (NPI 1245212471).

Provider details

NPI number: 1245212471
Entity type: Individual
Primary specialty: General Practice PhysicianAllopathic & Osteopathic Physicians
Credential: DO
Sex: Male
Sole proprietor: Yes
License: 000523 (CT)

Practice location

158 Danbury Rd

Ste 6

Ridgefield, CT 06877-3227

Phone: (203) 438-9915

Fax: (203) 431-4410

Street-level locationGet directions

More CT providers

Mailing address

158 Danbury Rd

Ridgefield, CT 06877-3227

Specialties & taxonomies

General Practice PhysicianPrimary208D00000XLicense 000523 (CT)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(92/100 index)

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

Registry tenure33% of score
20 yrs in NPPES registry
Profile completeness33% of score
100% of core fields populated
Practice footprint20% of score
1 documented practice location
Open Payments transparency13% of score
Has Open Payments disclosures (2024)

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.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$17 across 1 record (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2005-11-15
Last updated: 2012-09-06

Frequently asked questions

What is David Johnston's NPI number?: David Johnston's National Provider Identifier (NPI) is 1245212471, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is David Johnston's specialty?: David Johnston is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
Where is David Johnston located?: David Johnston's practice location on file with NPPES is 158 Danbury Rd, Ridgefield, CT 06877-3227.
What is David Johnston's phone number?: The practice phone number listed in the NPPES registry for David Johnston is (203) 438-9915.
Is David Johnston's NPI active?: Yes — David Johnston's NPI (1245212471) is active in the NPPES registry as of the last update on 2012-09-06.

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

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Transparency — industry payments

Frequently asked questions