John Hornby, MD
NPI 1881601581 · Ophthalmology Physician · Old Saybrook, CT
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Hornby, MD is a Ophthalmology Physician provider in Old Saybrook, CT (NPI 1881601581).
Provider details
- NPI number
- 1881601581
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- CT026165 (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
19 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
- 2006-08-02
- Last updated
- 2012-11-27
Frequently asked questions
- What is John Hornby's NPI number?
- John Hornby's National Provider Identifier (NPI) is 1881601581, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hornby's specialty?
- John Hornby is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is John Hornby located?
- John Hornby's practice location on file with NPPES is 48 Main St, Old Saybrook, CT 06475.
- What is John Hornby's phone number?
- The practice phone number listed in the NPPES registry for John Hornby is (860) 388-1251.
- Does John Hornby accept Medicare?
- John Hornby is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Hornby's NPI active?
- Yes — John Hornby's NPI (1881601581) is active in the NPPES registry as of the last update on 2012-11-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.