John Day, MD
NPI 1174599427 · Pulmonary Disease Physician · Putnam, CT
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Day, MD is a Pulmonary Disease Physician provider in Putnam, CT (NPI 1174599427).
Provider details
- NPI number
- 1174599427
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 040079 (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
20 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
- 2006-02-27
- Last updated
- 2008-05-20
Frequently asked questions
- What is John Day's NPI number?
- John Day's National Provider Identifier (NPI) is 1174599427, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Day's specialty?
- John Day is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is John Day located?
- John Day's practice location on file with NPPES is 320 Pomfret St, Putnam, CT 06260-1836.
- What is John Day's phone number?
- The practice phone number listed in the NPPES registry for John Day is (860) 928-4344.
- Does John Day accept Medicare?
- John Day is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Day's NPI active?
- Yes — John Day's NPI (1174599427) is active in the NPPES registry as of the last update on 2008-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.