Karen Ballen, MD
Hematology · Falls Church, VANPI 1821089558
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $2,125 of the $3,109 with a category attached, or 68.4%. National Marrow Donor Program accounts for 94.9% of it on its own, with 2 other manufacturers making up the rest. Reporting peaked in 2024 at $1,454 and has fallen 72.1% since, to $405 in 2025.
Across 18 payments — averaging $172.73 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- National Marrow Donor Program$3K
- CSL Behring$100
- Novartis$59
Across 27 payments — averaging $11,836 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- National Marrow Donor Program$297K
- Amgen$23K
What the payments were for
- Travel & lodging$80226%
- Food & beverage$2,12568%
- Education$1003%
- Gifts$823%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| National Marrow Donor Program | 16 | $2,950 |
| CSL Behring | 1 | $100 |
| Novartis | 1 | $59 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- Kcentra$100
How this compares
$3,109 in reported general payments places this provider in the 55th percentile of 26 hematology providers in Virginia.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| JakafiRuxolitinib Phosphate | 40 | $666,415 |
| Posaconazole | 12 | $16,184 |
| Atovaquone | 27 | $9,215 |
| Acyclovir | 87 | $1,747 |
| Pantoprazole Sodium | 29 | $698 |
| Prednisone | 33 | $394 |
| Citalopram HbrCitalopram Hydrobromide | 13 | $299 |
| Azithromycin | 18 | $249 |
| Ondansetron OdtOndansetron | 11 | $137 |
| Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim | 19 | $84 |
| Ondansetron Hcl | 13 | $65 |
| Amlodipine Besylate | 15 | $51 |
Paid to pharmacies, not to this prescriber.
Other hematology in Falls Church
- Najeebah BadeFalls Church$164
- Ashley HanlonFalls Church$118
- Hillary MaitlandCharlottesville$440K
- Barbara MacikCharlottesville$90K
- Emily AyersCharlottesville$63K
- Stephen MedlinFairfax$50K
- Laahn FosterCharlottesville$35K
- Michael KengCharlottesville$15K
- Indumathy VaradarajanCharlottesville$12K
- Raj ManchandaniLeesburg$10K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.