Walter Roberts, MD
Radiation Oncology · Dexter, MINPI 1346289899
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 17 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 13 manufacturers, the largest accounting for just 16.9% — the pattern of someone who eats at a lot of different presentations. Reporting peaked in 2019 at $119 and has fallen 69.4% since, to $36 in 2024. That places this record below the midpoint for radiation oncology clinicians in MI, where the typical reported total is $354.
Across 17 payments — averaging $17.39 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$50
- Varian Medical Systems, Inc.$43
- Johnson & Johnson$27
- Merck$26
- Boston Scientific$24
- Regeneron Healthcare Solutions, Inc.$19
- plus $108 from 7 others
What the payments were for
- Food & beverage$296100%
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 |
|---|---|---|
| AstraZeneca | 3 | $50 |
| Varian Medical Systems, Inc. | 1 | $43 |
| Johnson & Johnson | 2 | $27 |
| Merck | 2 | $26 |
| Boston Scientific | 1 | $24 |
| Regeneron Healthcare Solutions, Inc. | 1 | $19 |
| Clovis Oncology, Inc. | 1 | $19 |
| Coherus Oncology, Inc. | 1 | $18 |
| Bristol Myers Squibb | 1 | $15 |
| Lilly USA, LLC | 1 | $15 |
| Incyte Corporation | 1 | $15 |
| Amgen | 1 | $14 |
| Puma Biotechnology, Inc. | 1 | $12 |
How this compares
$296 in reported general payments places this provider in the 45th 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.
Other radiation oncology in Dexter
- Frank ViciniPontiac$231K
- Thomas BoikeClarkston$171K
- Farzan SiddiquiDetroit$72K
- Daniel WahlAnn Arbor$42K
- Daniel ChangAnn Arbor$38K
- Shruti JollyAnn Arbor$30K
- Brandon ManciniGrand Rapids$30K
- Alvaro MartinezFarmington Hills$24K
- James KaneAnn Arbor$19K
- M Salim SiddiquiDetroit$17K
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.