AJAY DAR (M.D.) – Medical Oncology Physician, NPI 1215905286
Medical Oncology Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
80 HEMATOLOGY in VA
Provider Addresses for AJAY DAR (M.D.)
44035 RIVERSIDE PKWY
SUITE 300
LEESBURG, VA 201768260
Phone: (703) 554-6800
Fax: (703) 724-7503
Type: Mailing
3040 WILLIAMS DR STE 100
FAIRFAX, VA 220314618
Phone: (571) 350-8400
Fax: (703) 940-8692
Type: Mailing
44035 RIVERSIDE PKWY STE 300
LEESBURG, VA 201768260
Phone: (703) 208-3155
Fax: (703) 724-7503
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 92 Open Payments records for all available years, with a total value of $2,219.
Total Amount is formed as General ($2,219) + Research ($0) + Ownership ($0) = $2,219.
Last reported payment date: 2024-12-12 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($344).
Total Amount
$2,219
General + Research + Ownership
Payments
92
Total payment records
General Amount
$2,219
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-12
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $344 |
| Janssen Biotech, Inc. | $342 |
| Novartis Pharmaceuticals Corporation | $314 |
| Eisai Inc. | $92 |
| Tempus AI, Inc | $92 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-03-08
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20100108000673 | I | Medical Oncology | VA | TBD |
| I20100308000040 | I | Medical Oncology | DC | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| J1439 | Injection, ferric carboxymaltose, 1 mg | 31,500 | 27 | $0 |
| J9144 | Injection, daratumumab, 10 mg and hyaluronidase-fihj | 13,140 | 12 | $0 |
| J9271 | Injection, pembrolizumab, 1 mg | 9,800 | 16 | $0 |
| J9267 | Injection, paclitaxel, 1 mg | 8,880 | 20 | $0 |
| J0881 | Injection, darbepoetin alfa, 1 microgram (non-esrd use) | 7,240 | 11 | $0 |
Insurance plans in this area (ZIP 20176)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | VA | |
| Physician Assistant | VA | |
| Radiation Oncology | VA | |
| - | VA | |
| Clinical Social Worker | VA | |
| Radiation Oncology | VA | |
| Hospice/Palliative Care, Internal Medicine, Hospice/Palliative Care | VA | |
| Hematology/Oncology, Internal Medicine | DC | |
| H E M A T O L O G Y/ O N C O L O G Y | VA | |
| - | NH |
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