Photo of Dr. Jiun Yoon, MD, FACP, FAAAAI

We are a medical specialty clinic located in Ashburn, VA that specializes in allergic disorders. Dr. Jiun Yoon is a board-certified adult and pediatric allergist.


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Ashburn Allergy, PLLC  


Please Note: This link will direct you to a third-party website unaffiliated with (, where you're able to request or schedule an appointment online with Dr. Jiun Yoon.

Accepting New Patients?

Yes, Dr. Jiun Yoon is accepting new patients at this office.


(888) 823-5456


20955 Professional Plaza, Suite 300, Ashburn, VA 20147

Office Hours

  Open Lunch Close

Office Details

Doctor Specialty Allergy / Immunology
Accepting New Patients? Yes
Practice Specialty Allergy / Immunology
Languages Spoken English

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Insurance Accepted  

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About Dr. Yoon
Dr. Yoon



Jiun Yoon, MD started his own solo allergy practice, Ashburn Allergy, PLLC, after eleven years of government service and six years in a group private practice. He served nine years on active duty with the United States Army. During his distinguished nine-year Army career, Dr. Yoon served as a Brigade Surgeon in the 2nd Infantry Division, staff internist with the 8th Army based in Seoul, South Korea, and Chief of the Allergy and Immunology Service at Dwight D. Eisenhower Army Medical Center in Augusta, Georgia; including a deployment in support of Iraqi Freedom with the 10th Combat Support Hospital. After completing his active duty service, Dr. Yoon practiced at the Fort Belvoir Community Hospital as a civilian allergist and also contributed to the education of future allergists at the Walter Reed National Military Medical Center Allergy and Immunology training program. Prior to starting Ashburn Allergy, Dr. Yoon joined a large group allergy private practice in the Metro DC area and serviced as the lead physician for their hub. He completed his undergraduate training at the University of Michigan in Ann Arbor and earned his Doctor of Medicine from the Drexel University College of Medicine in Philadelphia. He completed his internship and residency in Internal Medicine at Tripler Army Medical Center in Honolulu, HI and fellowship training in Adult and Pediatric Allergy and Immunology at the prestigious Walter Reed Army Medical Center. He is board certified in Allergy/Immunology.

Dr. Yoon's professional career includes appointments on several committees appointed by the American Academy of Allergy Asthma and Immunology (AAAAI) and the American College of Allergy Asthma and Immunology (ACAAI). He has also been elected as a Fellow of both the AAAAI and the ACAAI, as well as the American College of Physicians. 

His special interests in the field of allergy and immunology include allergic and non-allergic rhinitis, food allergies, and asthma. His approach to patient care incorporates many aspects of core Army values including integrity, duty, honor, and respect to provide top-notch compassionate and effective care for all ages.

Dr. Yoon grew up in the Washington, DC area and returned to this area upon completion of his military service. He resides in Ashburn, VA with his wife and two children. He enjoys playing and watching a variety of sports, especially the Michigan Wolverines. Go Blue!


Education & Training  

Medical School


  • Tripler Army Medical CenterHonolulu, HI
    Residency in Internal Medicine • 2001 - 2004


  • Walter Reed Army Medical CenterWashington, District of Columbia
    Fellowship in Allergy & Immunology • 2006 - 2008


Hospital Affiliations

  • Inova Loudoun Hospital
  • Inova Fairfax Hospital
  • Inova Fair Oaks Hospital

Languages Spoken  

  • English
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