Doctor profile · Federal record
Dr. Jiun Yoon, MD
Allergy & Immunology Physician (CMS: Allergy/Immunology) · Allergy & Immunology Physician · Allergy & Immunology Physician · Ashburn, VA
- NPI 1548258783
- Accepts Medicare
- 25 yrs in practice
- Licensed in 3 states
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
20955 Professional Plz Ste 300
Ashburn, VA 20147
(571) 246-6323
fax (888) 823-5456
Credentials & registration
- NPI registered
- October 2005 — 21 yrs on file
- Profile last updated
- January 20, 2026
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207K00000X — NUCC code
- State licenses (3)
- Virginia #0101246979 · District of Columbia #MD038548 · Maryland #D70246
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1548258783. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
16
Distinct HCPCS
1
Medicare allowed
$1,756
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99203 |
New patient office or other outpatient visit, 30-44 minutes | 16 | 16 | $110 |
In context: peer comparison
Among 1 peers in Ashburn Allergy & Immunology Physician, average services per provider: 16. This provider delivers 1.0× the peer median.Open Payments
Industry payments received
All-time total
$1,214
Transactions
36
Manufacturers
10
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Genzyme Corporation | 10 | $542.16 | |
| Regeneron Healthcare Solutions, INC. | 6 | $241.23 | |
| AstraZeneca Pharmaceuticals Lp | 8 | $177.12 | |
| Kaleo, INC. | 4 | $60.60 | |
| Pfizer INC. | 2 | $50.39 | |
| Lilly USA, LLC | 2 | $44.00 | |
| Jubilant HollisterStier LLC | 1 | $31.33 | |
| Alexion Pharmaceuticals, INC. | 1 | $29.11 | |
| GlaxoSmithKline, LLC. | 1 | $20.13 | |
| Abbvie INC. | 1 | $17.66 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
22
Patients
0
Total drug cost
$228
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Fluticasone Propionate | Generic | 11 | 0 | $198 |
| Levocetirizine Dihydrochloride | Generic | 11 | 0 | $30 |
Frequently asked questions
What is Dr. Jiun Yoon's medical specialty?
Dr. Jiun Yoon practices Allergy & Immunology Physician in Ashburn, VA.
Where does Dr. Jiun Yoon practice?
Dr. Jiun Yoon practices at 20955 Professional Plz Ste 300, Ashburn, VA 20147. Office phone: 5712466323.
What is Dr. Jiun Yoon's NPI?
Dr. Jiun Yoon's National Provider Identifier (NPI) is 1548258783, issued by NPPES.
Does Dr. Jiun Yoon accept Medicare assignment?
Yes. Dr. Jiun Yoon accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jiun Yoon commonly perform?
Top Medicare-reported procedures in 2023: New patient office or other outpatient visit (HCPCS 99203). Source: CMS Medicare Physician & Other Practitioners file.