NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Dal Chun, MD

Retina Specialist (Ophthalmology) Physician in Vienna, VA · enumerated 2006.

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

National Provider Identifier

1578587135

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Dal Chun
Credential MD
Sex Male
Practice address 8219 Leesburg Pike, #120, Vienna, VA, 22182
Fax (703) 206-7238
Enumeration date Jul 27, 2006
Last updated in NPPES Apr 9, 2019

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 220610 (MA) Secondary
207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License D73940 (MD) Secondary
207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 0101232470 (VA) Secondary
207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License D73940 (MD) Secondary
207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License 0101232470 (VA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
334430400 Medicaid MD -
041273800 Medicaid DC -
1578587135 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Dal Chun practice?
The practice location on file with NPPES is in Vienna, VA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Dal Chun?
The National Provider Identifier (NPI) for Dal Chun is 1578587135, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-09.