Jiun Yoon, MD
Allergy & Immunology Physician · Ashburn, VA
Jiun Yoon, MD is an allergy & immunology physician with a practice address in Ashburn, Virginia, and NPI 1548258783, issued on Oct 12, 2005. Check the license (Virginia 0101246979, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Jiun Yoon
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License numbers
- 0101246979 VA
MD038548 DC
D70246 MD
Self-reported in NPPES; status is on the state search - Practice location
- 20955 Professional Plz Ste 300, Ashburn, VA 20147
- Phone
- (571) 246-6323
- Enumerated
- Oct 12, 2005
- Record last updated
- Jan 20, 2026
- Fax
- (888) 823-5456
- Medicare enrollment
- Enrolled (PECOS I20140306000122); accepts Medicare assignment
- Medical or professional school
- Drexel University College Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 136 in Virginia → Look up another NPI →
Verify Jiun Yoon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101246979Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
41 Medicare Part D claims for 12 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Levocetirizine Dihydrochloride15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,213.73
36 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Jiun Yoon among 136 allergy & immunology physician records in Virginia
Jiun Yoon, MD is one of 136 allergy & immunology physician records with a practice address in Virginia. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 76% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2001 · median 2002 among the 97 with a school on file
- Record last updated2026 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in Virginia
There are 136 allergy & immunology physician records in Virginia.
All 136 in Virginia → Every provider in Ashburn → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Kunal Shah, MDRound Hill, VA 201411477714004
- Tamara Smith, M.D.Gainesville, VA 201551225127129
- Sharon Seth, M.D.Sterling, VA 201641922329465
- Maadhava Ellaurie, MDSterling, VA 201651942275714
- Bhavini Trivedi, MDSterling, VA 201651518912534
- Samantha Cresoe-OrtizHerndon, VA 201701831718907
- Jennifer Pedicano, MDHerndon, VA 201701568638229
- Donna Schuster, M.D.Herndon, VA 201701639174642
Common questions
What is Jiun Yoon, MD's NPI number?
Jiun Yoon, MD's National Provider Identifier (NPI) is 1548258783, issued on Oct 12, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Jiun Yoon, MD located?
The NPPES record lists a practice address at 20955 Professional Plz Ste 300, Ashburn, VA, 20147. Phone: (571) 246-6323. Providers update this record themselves, so call before visiting.
How can I verify Jiun Yoon, MD's license?
NPPES lists Virginia license number 0101246979, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jiun Yoon, MD prescribe under Medicare Part D?
In 2024, Jiun Yoon, MD had 41 Medicare Part D claims for 12 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.