Parag Parikh, MD
Radiation Oncology · Detroit, MINPI 1528088929
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $10,743 of the $15,616 with a category attached, or 68.8%. Viewray Technologies Inc accounts for 96.6% of it on its own, with 5 other manufacturers making up the rest. Reporting peaked in 2022 at $11,914 and has fallen 98.4% since, to $186 in 2025. Among radiation oncology clinicians in MI with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 34 payments — averaging $459.28 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Viewray Technologies Inc$15K
- Siemens Medical Solutions USA, Inc.$281
- Biocompatibles, Inc.$105
- Philips North America LLC$73
- AstraZeneca$43
- Zap Surgical Systems, Inc.$33
Across 13 payments — averaging $16,476 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.
- Viewray Technologies Inc$214K
What the payments were for
- Consulting fees$2,20014%
- Speaking & faculty fees$1,0006%
- Travel & lodging$10,74369%
- Food & beverage$1,67311%
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 |
|---|---|---|
| Viewray Technologies Inc | 28 | $15,081 |
| Siemens Medical Solutions USA, Inc. | 2 | $281 |
| Biocompatibles, Inc. | 1 | $105 |
| Philips North America LLC | 1 | $73 |
| AstraZeneca | 1 | $43 |
| Zap Surgical Systems, Inc. | 1 | $33 |
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.
- MRIdian LINAC$11,542
- MRIdian$3,200
- MAGNETOM Free.Max$186
- THERASPHERE-BIO$105
How this compares
$15,616 in reported general payments places this provider in the 90th percentile of 198 radiation oncology providers in Michigan.
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 |
|---|---|---|
| Ondansetron OdtOndansetron | 11 | $116 |
Paid to pharmacies, not to this prescriber.
Other radiation oncology in Detroit
- Farzan SiddiquiDetroit$72K
- M Salim SiddiquiDetroit$17K
- Nitin VaishampayanDetroit$13K
- Benjamin MovsasDetroit$6K
- Eric MellonDetroit$3K
- Eleanor WalkerDetroit$2K
- Michael DominelloDetroit$2K
- Frank ViciniPontiac$231K
- Thomas BoikeClarkston$171K
- Daniel WahlAnn Arbor$42K
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.