Peter Johnston, M.D.
NPI 1770897068 · Endocrinology, Diabetes & Metabolism Physician · Barryville, NY
Peter Johnston, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Barryville, NY (NPI 1770897068).
Provider details
- NPI number
- 1770897068
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 032117 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-07-29
- Last updated
- 2019-03-04
Frequently asked questions
- What is Peter Johnston's NPI number?
- Peter Johnston's National Provider Identifier (NPI) is 1770897068, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Johnston's specialty?
- Peter Johnston is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Peter Johnston located?
- Peter Johnston's practice location on file with NPPES is 10 Kodiak Road, Barryville, NY 12719.
- What is Peter Johnston's phone number?
- The practice phone number listed in the NPPES registry for Peter Johnston is (845) 557-0456.
- Is Peter Johnston's NPI active?
- Yes — Peter Johnston's NPI (1770897068) is active in the NPPES registry as of the last update on 2019-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.