Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Ralph Emerson Duncan III, MD

Individual provider Urology Physician · NPI 1851312276

Dr. Ralph Emerson Duncan III, MD is an Urology Physician in York, Pennsylvania. Practices as a sole proprietor. Licensed in Pennsylvania.

Licensed in
PA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

25 Monument Rd Ste 100
York, PA 17403-5060
Phone: (717) 741-4785
Fax: (717) 741-4696
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Urology Physician (primary) Taxonomy 208800000X · Licence MD022079E (PA)

Record details

NPI number1851312276
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 21, 2006
Last updated in NPPESOctober 6, 2025
Certification dateOctober 6, 2025

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