Ralph Duncan, MD
NPI 1851312276 · Urology Physician · York, PA
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ralph Duncan, MD is a Urology Physician provider in York, PA (NPI 1851312276).
Provider details
- NPI number
- 1851312276
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD022079E (PA)
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
- 2006-07-21
- Last updated
- 2025-10-06
- Certified
- 2025-10-06
Frequently asked questions
- What is Ralph Duncan's NPI number?
- Ralph Duncan's National Provider Identifier (NPI) is 1851312276, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ralph Duncan's specialty?
- Ralph Duncan is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Ralph Duncan located?
- Ralph Duncan's practice location on file with NPPES is 25 Monument Rd, York, PA 17403-5060.
- What is Ralph Duncan's phone number?
- The practice phone number listed in the NPPES registry for Ralph Duncan is (717) 741-4785.
- Does Ralph Duncan accept Medicare?
- Ralph Duncan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ralph Duncan's NPI active?
- Yes — Ralph Duncan's NPI (1851312276) is active in the NPPES registry as of the last update on 2025-10-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.