NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Karen Ngoc-Khanh Nguyen

Pharmacist in Arlington, VA · enumerated 2020 · practices at Giant of Maryland LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1538769138

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Registry record

Entity type Individual (Type 1)
Name Karen Ngoc-Khanh Nguyen
Sex Female
Practice address Arlington, VA, 22201
Phone (703) 351-9220
Enumeration date Nov 1, 2020
Last updated in NPPES Nov 1, 2020

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License PS32862 (FL) Secondary
183500000X Pharmacist Pharmacy Service Providers · License 14688 (MD) Secondary
183500000X Pharmacist Pharmacy Service Providers · License 50618 (CA) Secondary
183500000X Pharmacist Pharmacy Service Providers · License 0202012644 (VA) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Karen Nguyen?
The National Provider Identifier (NPI) for Karen Nguyen is 1538769138, a Type 1 (individual) record in the CMS NPPES registry.
Where does Karen Nguyen practice?
The practice location on file with NPPES is in Arlington, VA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-01.