NPI Portal NPI Lookup & Verification

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

Dr. Hyok Chan Yi, L.AC.,PH.D.

Acupuncturist in Annandale, VA · enumerated 2007.

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

National Provider Identifier

1720112303

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Registry record

Entity type Individual (Type 1)
Name Dr. Hyok Chan Yi
Credential L.AC.,PH.D.
Sex Male
Practice address Annandale, VA, 22003
Phone (703) 658-5100
Fax (703) 916-1717
Enumeration date Mar 15, 2007
Last updated in NPPES Sep 26, 2025

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

Taxonomy & licenses

171100000X Acupuncturist Other Service Providers · License 0121000325 (VA) Primary
171100000X Acupuncturist Other Service Providers · License AC5085 (CA) Secondary
171100000X Acupuncturist Other Service Providers · License U01322 (MD) Secondary
LAC · Licensed Acupuncturist: A practitioner licensed to perform acupuncture. About the LAC credential

Other identifiers

Identifier Type State Issuer
30018346440001 Medicaid VA -

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 Hyok Yi practice?
The practice location on file with NPPES is in Annandale, VA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Hyok Yi?
The National Provider Identifier (NPI) for Hyok Yi is 1720112303, 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 2025-09-26.