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

Dr. Heejung Lauren Yoon, O.D.

Q: What is the NPI number for Heejung Yoon?

The National Provider Identifier (NPI) for Heejung Yoon is 1073666582, a Type 1 (individual) record in the CMS NPPES registry.

Optometrist in Danbury, CT · enumerated 2007.

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

National Provider Identifier

1073666582

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Registry record

Entity type Individual (Type 1)

Name Dr. Heejung Lauren Yoon

Credential O.D.

Sex Female

Practice address Danbury, CT, 06811

Phone (203) 743-9897

Enumeration date Jan 19, 2007

Last updated in NPPES Mar 1, 2023

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 2587 (CT) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Heejung Yoon?

The National Provider Identifier (NPI) for Heejung Yoon is 1073666582, a Type 1 (individual) record in the CMS NPPES registry.

Where does Heejung Yoon practice?

The practice location on file with NPPES is in Danbury, CT. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-01.