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Dr. Ryan Alexander Duffy, MD
NPI1821550302PAC ID5395111793
- Medicare services, 2023
- 13
- Publications
- 10
- Hospital affiliations
- 2
- Medical group
- 1
- State license
- 1
- Practice address
- 2301 Erwin Rd, Durham, NC 27705
- Practice phone
- Call (919) 684-8111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Ryan Alexander Duffy is a hospitalist in Durham, North Carolina
Dr. Duffy practices at Duke University Hospital in Durham, North Carolina, part of Duke University.
Dr. Duffy's NPI, 1821550302, was assigned on April 3, 2019. Dr. Duffy graduated from Virginia Tech Carilion School of Medicine in 2019. Dr. Duffy holds North Carolina license 2022-01640.
NPI and contact details
- NPI
- 1821550302NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5395111793
- NPI enumeration date
- April 3, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (919) 684-8111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ryan Alexander Duffy practices at Duke University Hospital in Durham, North Carolina
Dr. Duffy's primary practice is Duke University Hospital, at 2301 Erwin Rd, Durham, NC 27705 in Durham County. The practice phone is (919) 684-8111.
- Duke University Hospital2301 Erwin Rd, Durham, NC 27705 · Durham CountyPhone(919) 684-8111
Source: Dmand AI Affiliation Data
Dr. Ryan Alexander Duffy is affiliated with 2 sites of care and 1 medical group
Dr. Duffy's primary practice is Duke University Hospital in Durham, North Carolina, part of Duke University. Dr. Duffy is also affiliated with Duke Regional Hospital. The medical group on file is Duke Regional Hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ryan Alexander Duffy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Duffy practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Duke University Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ryan Alexander Duffy is one of 946 hospitalists in North Carolina
Hospitalist is Dr. Duffy's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Duffy is licensed in North Carolina.
Specialties and state licenses
- Hospitalist, North CarolinaPrimary
Hospitalists near Dr. Duffy
Counts of hospitalists 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
Dr. Ryan Alexander Duffy billed Medicare for 13 services in 2023
CMS data shows 13 Medicare services from Dr. Duffy across 1 procedure code in 2023. Medicare paid $1,615 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202313
Paid by Medicare$1,615
Procedure codes1
Dr. Duffy's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 142023: 137%
Dr. Duffy compared with the North Carolina median for hospitalists, 2023
- Dr. Duffy
- North Carolina median
- Medicare services
- 13vs 38597% below
Medians across 896 hospitalists in North Carolina with Dmand AI profiles that report each measure.
Dr. Duffy's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Duffy?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Duffy and other hospitalists in North Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ryan Alexander Duffy's patients have a median age of 81
Across all payers, Dmand AI patient panel data puts Dr. Duffy's median patient age at 81, with 67% women.
Dr. 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 81
Patient panel by sex, all payers
- Women67%
- Men33%
Source: Dmand AI Patient Panel Data
How Dr. Ryan Alexander Duffy takes part in Medicare
Dr. Duffy accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ryan Alexander Duffy has 10 publications on record
Dmand AI links 10 papers to Dr. Duffy, published from 2014 to 2025. 2016 was the busiest year, with 2. The most frequent topics are AIDS Vaccines, Antibodies, Neutralizing and HIV-1. Dr. Duffy's most frequent co-authors are Nelson Lee Michael, MD, PhD, Brian Burke and Laura Marie Caputo, MD.
Papers10
Years published2014 to 2025
Dr. Duffy's papers by year, 2014 to 2025
Topics Dr. Duffy writes about most
- AIDS Vaccines
- Antibodies, Neutralizing
- HIV-1
- HIV Antibodies
- HIV Envelope Protein gp120
- Epitopes
Dr. Duffy's most frequent co-authors
- Nelson Lee Michael, MD, PhD2 shared papers
- Brian Burke1 shared paper
- Laura Marie Caputo, MD1 shared paper
Recent publications by Dr. Duffy
Administration, OralAnti-Bacterial AgentsBacteremia
J Acad Consult Liaison Psychiatry
Telemed J E Health
Diabetes Mellitus, Type 2Glycated HemoglobinHypoglycemic Agents
See who Dr. Duffy researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Duffy works with, so you can find a warm path to the right hospitalists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ryan Alexander Duffy graduated from Virginia Tech Carilion School of Medicine
Dr. Duffy graduated from Virginia Tech Carilion School of Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ryan Alexander 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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 Dr. Ryan Alexander 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 Dr. Ryan Alexander Duffy's NPI number?
Dr. Ryan Alexander Duffy's NPI number is 1821550302. It was assigned on April 3, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryan Alexander Duffy?
Dr. Ryan Alexander Duffy is a hospitalist in Durham, North Carolina. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Ryan Alexander Duffy practice?
Dr. Duffy practices at 2301 Erwin Rd, Durham, NC 27705. Dr. Duffy's primary practice is Duke University Hospital in Durham, North Carolina, part of Duke University.
What is Dr. Ryan Alexander Duffy's office phone number?
The practice phone on file for Dr. Duffy is (919) 684-8111.
What is Dr. Ryan Alexander Duffy's medical license number?
Dr. Duffy holds North Carolina license 2022-01640.
Which hospitals is Dr. Ryan Alexander Duffy affiliated with?
Dr. Duffy practices at Duke University Hospital in Durham, North Carolina. Dr. Duffy is also affiliated with Duke Regional Hospital.
What medical group is Dr. Ryan Alexander Duffy part of?
Dr. Duffy is linked to Duke Regional Hospital.
Does Dr. Ryan Alexander Duffy accept Medicare?
Yes. CMS data shows Dr. Duffy billed Medicare for 13 services in 2023, and Dr. Duffy accepts Medicare assignment.
What services does Dr. Ryan Alexander Duffy bill to Medicare?
In 2023, Dr. Duffy's most billed Medicare services were hospital inpatient care (99223).
Where did Dr. Ryan Alexander Duffy go to medical school?
Dr. Duffy graduated from Virginia Tech Carilion School of Medicine in 2019.
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How long has Dr. Ryan Alexander Duffy been practicing?
Dr. Duffy graduated from medical school in 2019, 7 years ago.
Does Dr. Ryan Alexander Duffy do research?
Dmand AI links 10 publications to Dr. Duffy, published from 2014 to 2025.
Who does Dr. Ryan Alexander Duffy publish with?
Dr. Duffy's most frequent co-authors are Nelson Lee Michael, MD, PhD (2 shared papers), Brian Burke (1 shared paper) and Laura Marie Caputo, MD (1 shared paper).
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