Irina Sparks, MD
Radiation Oncology · Goshen, INNPI 1831432236
Payments from drug & device makers
What this record shows
Varian Medical Systems, Inc. accounts for 67.5% of it on its own, with 11 other manufacturers making up the rest. Reporting peaked in 2019 at $1,470 and has fallen 86.1% since, to $205 in 2025.
Across 23 payments — averaging $78.00 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Varian Medical Systems, Inc.$1K
- Accuray Incorporated$202
- E.r. Squibb & Sons, L.L.C.$63
- Regeneron Healthcare Solutions, Inc.$60
- Bayer$50
- Boston Scientific$50
- plus $159 from 6 others
What the payments were for
- Travel & lodging$1,06860%
- Food & beverage$72540%
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 |
|---|---|---|
| Varian Medical Systems, Inc. | 6 | $1,210 |
| Accuray Incorporated | 1 | $202 |
| E.r. Squibb & Sons, L.L.C. | 2 | $63 |
| Regeneron Healthcare Solutions, Inc. | 2 | $60 |
| Bayer | 3 | $50 |
| Boston Scientific | 2 | $50 |
| Myriad Genetic Laboratories, Inc. | 2 | $41 |
| Siemens Medical Solutions USA, Inc. | 1 | $33 |
| Genmab U.S., Inc. | 1 | $26 |
| Novartis | 1 | $23 |
| Elekta, Inc. | 1 | $21 |
| Bioprotect Medical, Inc. | 1 | $16 |
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.
- Halcyon$1,068
- TomoTherapy System$202
How this compares
$1,794 in reported general payments places this provider in the 80th percentile of 116 radiation oncology providers in Indiana.
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 |
|---|---|---|
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 12 | $126 |
| Tamsulosin Hcl | 12 | $37 |
Paid to pharmacies, not to this prescriber.
Other radiation oncology in Goshen
- Houman VaghefiGoshen$5K
- James WheelerGoshen$2K
- Brian ChangFort Wayne$13K
- Michael EatonIndianapolis$11K
- William PorterMadison$8K
- Binh TranMishawaka$7K
- Gordon WatsonIndianapolis$6K
- John CoxIndianapolis$5K
- Peter GarrettIndianapolis$5K
- Garrett JensenIndianapolis$4K
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.