Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. John Duncan Sr., RPH
Pharmacist in San Antonio, TX · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1083638936
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Registry record
Entity type Individual (Type 1)
Name Mr. John Duncan Sr.
Credential RPH
Sex Male
Practice address 3110 Nogalitos, Suite 107, San Antonio, TX, 78225
Phone (210) 532-1345
Enumeration date Jul 26, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy.
About the RPH credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for John Duncan?
The National Provider Identifier (NPI) for John Duncan is 1083638936, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Duncan practice?
The practice location on file with NPPES is in San Antonio, TX. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → David Gomez Physician Assistant · San Antonio, TX NPI 1548257975 Betty Ramos-Dobry Physician Assistant · San Antonio, TX NPI 1306837554 Cost Plus Medical Supply Durable Medical Equipment & Medical Supplies · San Antonio, TX NPI 1083635668 Duncan Pharmacy Inc Community/Retail Pharmacy · San Antonio, TX NPI 1538218995 Ryke Rehabilitation, LLC Physical Therapist · San Antonio, TX NPI 1245430586 Marta Solomon Physical Therapist · San Antonio, TX NPI 1417139536 David Ramos Family Medicine Physician · San Antonio, TX NPI 1003091976 Mission Rehabilitation and Sports Medicine Limited Partnership Physical Therapist · San Antonio, TX NPI 1043458433
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.