John Duffy, MD
NPI 1295710358 · Family Medicine Physician · Canton, NY
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Duffy, MD is a Family Medicine Physician provider in Canton, NY (NPI 1295710358).
Provider details
- NPI number
- 1295710358
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 284577 (NY)
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 152 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 464 | 84 |
| Omeprazole | 449 | 104 |
| Atorvastatin Calcium | 427 | 101 |
| Pantoprazole Sodium | 354 | 77 |
| Tamsulosin Hcl | 279 | 47 |
| Amlodipine Besylate | 276 | 77 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-13
- Last updated
- 2022-10-21
- Certified
- 2022-10-21
Frequently asked questions
- What is John Duffy's NPI number?
- John Duffy's National Provider Identifier (NPI) is 1295710358, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Duffy's specialty?
- John Duffy is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Duffy located?
- John Duffy's practice location on file with NPPES is 39 West Main Street, Canton, NY 13617.
- What is John Duffy's phone number?
- The practice phone number listed in the NPPES registry for John Duffy is (315) 379-4700.
- Does John Duffy accept Medicare?
- John Duffy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Duffy's NPI active?
- Yes — John Duffy's NPI (1295710358) is active in the NPPES registry as of the last update on 2022-10-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.