GREGORY J ORLOFF (M.D.) – Hematology & Oncology Physician, NPI 1750358776
Hematology & Oncology Physician
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Profile Insights
NPPES metrics only — not quality of care.
368 HEMATOLOGY/ONCOLOGY in VA
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Provider Addresses for GREGORY J ORLOFF (M.D.)
3040 WILLIAMS DR STE 100
FAIRFAX, VA 220314618
Phone: (571) 350-8400
Fax: (703) 940-8697
Type: Mailing
8613 LEE HWY # 200N
FAIRFAX, VA 220312171
Phone: (703) 280-5390
Fax: (703) 280-9596
Type: Mailing
Prosperity Medical Center, 8503, Arlington Boulevard, Pine Ridge, Annandale, Fairfax County, Virginia, 22031, United States
STE 400
FAIRFAX, VA 220314629
Phone: (703) 280-5390
Fax: (703) 280-9596
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 27 Open Payments records for all available years, with a total value of $607.
Total Amount is formed as General ($607) + Research ($0) + Ownership ($0) = $607.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: Daiichi Sankyo Inc. ($109).
Total Amount
$607
General + Research + Ownership
Payments
27
Total payment records
General Amount
$607
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-17
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2010-03-03
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20100303000440 | I | Hematology/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 |
|---|---|---|---|---|
| J9144 | Injection, daratumumab, 10 mg and hyaluronidase-fihj | 12,420 | 30 | $0 |
| J1439 | Injection, ferric carboxymaltose, 1 mg | 9,750 | 13 | $0 |
| J0881 | Injection, darbepoetin alfa, 1 microgram (non-esrd use) | 9,260 | 20 | $0 |
| J9271 | Injection, pembrolizumab, 1 mg | 7,500 | 14 | $0 |
| Q5119 | Injection, rituximab-pvvr, biosimilar, (ruxience), 10 mg | 1,470 | 17 | $0 |
Insurance plans in this area (ZIP 22031)
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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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