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

Dr. Sejeong Yoon, PHARMD

Pharmacist in Woodstock, MD · enumerated 2020 · practices at Weis Markets Inc.

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

National Provider Identifier

1558957357

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Registry record

Entity type Individual (Type 1)
Name Dr. Sejeong Yoon
Credential PHARMD
Sex Female
Practice address Woodstock, MD, 21163
Phone (410) 461-7547
Enumeration date Dec 15, 2020
Last updated in NPPES Apr 23, 2024

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

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 26500 (MD) Primary
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD 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.

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Frequently asked questions

Where does Sejeong Yoon practice?
The practice location on file with NPPES is in Woodstock, MD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Sejeong Yoon?
The National Provider Identifier (NPI) for Sejeong Yoon is 1558957357, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-23.