Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Sam Theyyan Nathan, BS/PHARMACY
Pharmacist in Leonardtown, MD · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1366529851
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Registry record
Entity type Individual (Type 1)
Name Sam Theyyan Nathan
Credential BS/PHARMACY
Sex Male
Practice address 40955 Merchants Ln, Leonardtown, MD, 20650
Phone (301) 475-7212
Enumeration date Nov 1, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Sam Nathan?
Sam Nathan is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.