DR. CHRISTINA ELLEN BRZEZNIAK (DO) – Hematology & Oncology Physician, NPI 1356590004
Hematology & Oncology Physician
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Doctor Profile
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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 DR. CHRISTINA ELLEN BRZEZNIAK (DO)
Town Center Drive, Reston, Virginia, 20190, United States
RESTON, VA 201903217
Phone: (703) 437-6535
Fax: (703) 437-6549
Type: Mailing
1860 TOWN CENTER DR STE 460
RESTON, VA 201905901
Phone: (571) 350-8400
Fax: (703) 437-6549
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 64 Open Payments records for all available years, with a total value of $1,594.
Total Amount is formed as General ($1,594) + Research ($0) + Ownership ($0) = $1,594.
Last reported payment date: 2024-12-23 • Largest payer in this snapshot: Novartis Pharmaceuticals Corporation ($289).
Total Amount
$1,594
General + Research + Ownership
Payments
64
Total payment records
General Amount
$1,594
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Novartis Pharmaceuticals Corporation | $289 |
| Janssen Biotech, Inc. | $169 |
| Daiichi Sankyo Inc. | $161 |
| Merck Sharp & Dohme LLC | $140 |
| Genentech USA, Inc. | $112 |
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: 2018-09-10
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 |
|---|---|---|---|---|
| I20180713001498 | I | Hematology/Oncology | DC | TBD |
| I20180910000136 | I | Hematology/Oncology | VA | 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 | 27,000 | 25 | $0 |
| J0897 | Injection, denosumab, 1 mg | 1,680 | 11 | $0 |
| J1100 | Injection, dexamethasone sodium phosphate, 1 mg | 1,224 | 43 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 935 | 196 | $0 |
| 85025 | Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 904 | 185 | $0 |
Insurance plans in this area (ZIP 20190)
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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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