Doctor profile · Federal record
Dr. Ajay Dar, M.D.
Medical Oncology Physician (CMS: Medical Oncology) · Internal Medicine Physician · Leesburg, VA
- NPI 1215905286
- Accepts Medicare
- MIPS 89.8 / 100 · 2023
- 42 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
44035 Riverside Pkwy Ste 300
Leesburg, VA 201768260
(703) 208-3155
fax (703) 724-7503 - Mailing address
-
3040 Williams Dr Ste 100
Fairfax, VA 220314618
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- November 12, 2025
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 207RX0202X — NUCC code
- State license (1)
- Virginia #0101231668
- Medicaid
- VA #1215905286
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1215905286. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
93,330
Distinct HCPCS
10
Medicare allowed
$1,660,743
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J1439 |
Injection, ferric carboxymaltose, 1 mg | 31,500 | 27 | $1 | |
J9144 |
Injection, daratumumab, 10 mg and hyaluronidase-fihj | 13,140 | 12 | $48 | |
J9271 |
Injection, pembrolizumab, 1 mg | 9,800 | 16 | $54 | |
J9267 |
Injection, paclitaxel, 1 mg | 8,880 | 20 | $0 | |
J0881 |
Injection, darbepoetin alfa, 1 microgram (non-esrd use) | 7,240 | 11 | $3 | |
J0185 |
Injection, aprepitant, 1 mg | 4,290 | 16 | $2 | |
J0897 |
Injection, denosumab, 1 mg | 3,180 | 17 | $23 | |
J1100 |
Injection, dexamethasone sodium phosphate, 1 mg | 2,098 | 63 | $0 | |
36415 |
Insertion of needle into vein for collection of blood sample | 1,530 | 376 | $8 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 1,464 | 364 | $8 |
In context: peer comparison
Among 2 peers in Leesburg Medical Oncology Physician, average services per provider: 1,182. This provider delivers 79× the peer median.Open Payments
Industry payments received
All-time total
$1,482
Transactions
56
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals Lp | 10 | $242.84 | |
| Novartis Pharmaceuticals Corporation | 11 | $212.84 | |
| Janssen Biotech, INC. | 8 | $199.57 | |
| Eisai INC. | 4 | $92.29 | |
| Tempus Ai, INC | 2 | $92.27 | |
| GlaxoSmithKline, LLC. | 4 | $88.98 | |
| Merck Sharp & Dohme LLC | 3 | $70.77 | |
| Incyte Corporation | 2 | $52.14 | |
| Takeda Pharmaceuticals U.S.A., INC. | 2 | $51.73 | |
| Astellas Pharma US INC | 2 | $51.32 | |
| Genentech USA, INC. | 2 | $48.75 | |
| Genzyme Corporation | 1 | $43.58 | |
| Lilly USA, LLC | 2 | $42.71 | |
| Pfizer INC. | 2 | $42.08 | |
| Alexion Pharmaceuticals, INC. | 1 | $31.01 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
467
Patients
92
Total drug cost
$397,475
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Eliquis (Apixaban) | Brand | 65 | 14 | $62,027 |
| Anastrozole | Generic | 50 | 13 | $1,165 |
| Dexamethasone | Generic | 48 | 12 | $329 |
| Prednisone | Generic | 47 | 12 | $486 |
| Letrozole | Generic | 46 | 11 | $1,818 |
| Hydroxyurea | Generic | 40 | 0 | $1,414 |
| Xarelto (Rivaroxaban) | Brand | 26 | 0 | $21,186 |
| Abiraterone Acetate | Generic | 23 | 0 | $59,525 |
| Prochlorperazine Maleate | Generic | 23 | 19 | $347 |
| Tamoxifen Citrate | Generic | 19 | 0 | $723 |
Hospital affiliations
Frequently asked questions
What is Dr. Ajay Dar's medical specialty?
Dr. Ajay Dar practices Medical Oncology Physician in Leesburg, VA.
Where does Dr. Ajay Dar practice?
Dr. Ajay Dar practices at 44035 Riverside Pkwy Ste 300, Leesburg, VA 201768260. Office phone: 7032083155.
What is Dr. Ajay Dar's NPI?
Dr. Ajay Dar's National Provider Identifier (NPI) is 1215905286, issued by NPPES.
Does Dr. Ajay Dar accept Medicare assignment?
Yes. Dr. Ajay Dar accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ajay Dar commonly perform?
Top Medicare-reported procedures in 2023: Injection, ferric carboxymaltose, 1 mg (HCPCS J1439); Injection, daratumumab, 10 mg and hyaluronidase-fihj (HCPCS J9144); Injection, pembrolizumab, 1 mg (HCPCS J9271). Source: CMS Medicare Physician & Other Practitioners file.