Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Jiun Yoon, MD

Individual provider Allergy & Immunology Physician · NPI 1548258783

Dr. Jiun Yoon, MD is an Allergy/Immunology in Ashburn, Virginia. Graduated from Drexel University College of Medicine in 2001, 25 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in District of Columbia, Maryland and Virginia.

Years since qualifying
25
Trained at
Drexel University College of Medicine
Licensed in
DC, MD, VA
In the registry since
2005
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

20955 Professional Plz Ste 300
Ashburn, VA 20147
Phone: (571) 246-6323
Fax: (888) 823-5456
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence 0101246979 (VA)
Allergy & Immunology Physician Taxonomy 207K00000X · Licence MD038548 (DC)
Allergy & Immunology Physician Taxonomy 207K00000X · Licence D70246 (MD)

Record details

NPI number1548258783
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedOctober 12, 2005
Last updated in NPPESJanuary 20, 2026
Certification dateJanuary 20, 2026
Mailing address20955 Professional Plz Ste 300, Ashburn, VA 20147-3405

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyALLERGY/IMMUNOLOGY
Medical schoolDREXEL UNIVERSITY COLLEGE OF MEDICINE
Graduated 2001 (25 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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