npidata.org Sign in
Products
Provider RadarWatch an area and specialty — weekly alerts on new cliniciansPractice RadarWeekly alerts when new organisations register nearbySpecialtiesEvery NUCC taxonomy, with counts by state and cityStatesProvider counts and breakdowns for all 50 statesPhysician listsMDs and DOs with addresses and phone numbersNP listsNurse practitioners, the fastest-growing groupAPIJSON, delta feed, free tier
Use cases
Healthcare sales prospectingPhysician recruiting and locum staffingMedical device sales territory planningCredentialing and provider verificationHealthcare marketing lists and audience buildingPharmaceutical sales and prescriber targeting
Account
Start freeThree radars and an export a month Sign in Pricing
Explore
Data Labs API
About
About usTermsPrivacyContact us

Search › North Carolina › 207V00000X

Clayton Alfonso, MD

NPI 1790028843 · on the registry since 2013

Practice

Address
2301 Erwin Rd
Durham, NC 27710
Phone
(919) 684-8111
Organisation at this address
Duke University Hospital
Duke University Hospital
Duke University Health System
Duke University Medical Center
Duke University Health System Inc
Inferred from a shared address, not stated in the registry.
Clinicians at this address
2,311

Registry record

Primary taxonomy
207V00000X
207V00000X
Also registered as
207V00000X
Licence states on file
NC, VA
From the registry's licence fields, which are often incomplete.
Sex
Male
Record last updated
2026-07-24

Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in North Carolina