John M. Duffy, PA-C
- Part D claims, 2024
- 203
- Hospital affiliations
- 2
- Industry payments
- $124
- Medical groups
- 3
- State license
- 1
- Practice address
- 380 Summit Avenue, Steubenville, OH 43952
- Practice phone
- Call (740) 264-7212
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find John Duffy's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
John M. Duffy is a physician assistant in Steubenville, Ohio
John Duffy practices at Trinity Health System in Steubenville, Ohio, part of University of Pittsburgh Medical Center.
John Duffy's NPI, 1548331531, was assigned on November 13, 2006. John Duffy holds Pennsylvania license MA051412.
- NPI
- 1548331531NPI Registry (opens in a new tab)
- NPI enumeration date
- November 13, 2006
- NPI status
- Active
- Practice phone
- (740) 264-7212
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
John M. Duffy practices at 2 locations in Steubenville, Ohio
John Duffy's primary practice is Trinity Health System, at 380 Summit Avenue, Steubenville, OH 43952 in Jefferson County. The practice phone is (740) 264-7212. John Duffy also practices at Trinity Medical Center West, 4000 Johnson Rd, Steubenville, OH 43952.
- Trinity Health SystemPrimary380 Summit Avenue, Steubenville, OH 43952 · Jefferson CountyPhone(740) 264-7212
- Trinity Medical Center West4000 Johnson Rd, Steubenville, OH 43952 · Jefferson CountyPhone(740) 264-8110
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
John M. Duffy is affiliated with 3 sites of care and 3 medical groups
John Duffy's primary practice is Trinity Health System in Steubenville, Ohio, part of University of Pittsburgh Medical Center. John Duffy is also affiliated with Select Specialty Hospital - Pittsburgh / UPMC. The medical group on file is University of Pittsburgh Physicians, Department of Radiology. Dmand AI also links John Duffy to 2 more medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at John M. Duffy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Duffy practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Trinity Health System | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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John M. Duffy is one of 4,524 physician assistants in Ohio
Physician assistant is John Duffy's primary specialty in the NPI Registry, under taxonomy code 363A00000X. John Duffy is licensed in Pennsylvania.
Specialties and state licenses
- Physician assistant, PennsylvaniaPrimary
Physician assistants near John Duffy
Counts of physician assistants with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
John M. Duffy's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts John Duffy's median patient age at 68, with 48% women.
John Duffy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women48%
- Men52%
Source: Dmand AI Patient Panel Data
John M. Duffy wrote 203 Medicare Part D claims in 2024
In 2024, John Duffy wrote 203 Medicare Part D claims for 147 patients. 100% of them were for generic drugs.
Drug classes CMS tracks in John Duffy's Part D claims, 2024
- Opioids74%151 of 203 claims
- Antibiotics6%13 of 203 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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John M. Duffy received $124 in industry payments in 2025
CMS Open Payments shows 1 general payment to John Duffy from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Neurocrine BioSciences, Inc. paid the most, $124.
Companies that paid John Duffy the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for John M. Duffy's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about John M. Duffy
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John M. Duffy's NPI number?
John M. Duffy's NPI number is 1548331531. It was assigned on November 13, 2006, and it is active in the NPI Registry.
What does John M. Duffy specialize in?
John M. Duffy is a physician assistant in Steubenville, Ohio. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does John M. Duffy practice?
John Duffy practices at 380 Summit Avenue, Steubenville, OH 43952. John Duffy also practices at 4000 Johnson Rd, Steubenville, OH 43952. John Duffy's primary practice is Trinity Health System in Steubenville, Ohio, part of University of Pittsburgh Medical Center. Dmand AI also links John Duffy to 2 medical groups and 1 group practice or clinic.
What is John M. Duffy's office phone number?
The practice phone on file for John Duffy is (740) 264-7212.
What is John M. Duffy's medical license number?
John Duffy holds Pennsylvania license MA051412.
Which hospitals is John M. Duffy affiliated with?
John Duffy practices at Trinity Health System in Steubenville, Ohio. John Duffy is also affiliated with Select Specialty Hospital - Pittsburgh / UPMC.
What medical group is John M. Duffy part of?
John Duffy is linked to University of Pittsburgh Physicians, Department of Radiology. Dmand AI links John Duffy to 2 more medical groups.
Has John M. Duffy received payments from drug or device companies?
CMS Open Payments shows $124 in general payments to John Duffy from 1 company from 2025 to 2025. The largest total came from Neurocrine BioSciences, Inc.
How long has John M. Duffy been practicing?
John Duffy graduated from medical school in 2003, 23 years ago.
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