Ryan Duffy, MD
NPI 1821550302 · Hospitalist Physician · Durham, NC
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Duffy, MD is a Hospitalist Physician provider in Durham, NC (NPI 1821550302).
Provider details
- NPI number
- 1821550302
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2022-01640 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
- 2019-04-03
- Last updated
- 2025-02-24
- Certified
- 2025-02-24
Frequently asked questions
- What is Ryan Duffy's NPI number?
- Ryan Duffy's National Provider Identifier (NPI) is 1821550302, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Duffy's specialty?
- Ryan Duffy is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Duffy located?
- Ryan Duffy's practice location on file with NPPES is 2301 Erwin Rd, Durham, NC 27705-4699.
- What is Ryan Duffy's phone number?
- The practice phone number listed in the NPPES registry for Ryan Duffy is (919) 684-8111.
- Does Ryan Duffy accept Medicare?
- Ryan Duffy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Duffy's NPI active?
- Yes — Ryan Duffy's NPI (1821550302) is active in the NPPES registry as of the last update on 2025-02-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.