Michael Green, MD
Radiation Oncology · Ann Arbor, MINPI 1053722918
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $1,156 of the $1,563 with a category attached, or 74.0%. Merck accounts for 83.6% of it on its own, with 3 other manufacturers making up the rest. Reporting peaked in 2024 at $1,306 and has fallen 90.4% since, to $126 in 2025.
Across 10 payments — averaging $156.34 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$1K
- Elekta, Inc.$126
- AstraZeneca$114
- Boston Scientific$17
Across 4 payments — averaging $59,080 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.
- Merck$159K
- Janssen Research & Development, LLC$75K
- Pfizer$2K
What the payments were for
- Travel & lodging$1,15674%
- Food & beverage$40726%
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 |
|---|---|---|
| Merck | 7 | $1,306 |
| Elekta, Inc. | 1 | $126 |
| AstraZeneca | 1 | $114 |
| Boston Scientific | 1 | $17 |
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.
How this compares
$1,563 in reported general payments places this provider in the 75th 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 Ann Arbor
- Daniel WahlAnn Arbor$42K
- Daniel ChangAnn Arbor$38K
- Shruti JollyAnn Arbor$30K
- James KaneAnn Arbor$19K
- Theodore LawrenceAnn Arbor$12K
- Michelle MierzwaAnn Arbor$2K
- Michelle KimAnn Arbor$2K
- Sean MillerAnn Arbor$1K
- Frank ViciniPontiac$231K
- Thomas BoikeClarkston$171K
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.