Michelle Ludwig, MD
Radiation Oncology · Aurora, CONPI 1316269269
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $2,907 of the $3,512 with a category attached, or 82.8%. Brainlab, Inc. accounts for 97.0% of it on its own, with 3 other manufacturers making up the rest.
Across 19 payments — averaging $184.84 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Brainlab, Inc.$3K
- Siemens Medical Solutions USA, Inc.$41
- Pfizer$38
- Tactile Systems Technology Inc$25
Across 21 payments — averaging $60,406 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.
- GSK$1.3M
What the payments were for
- Travel & lodging$2,90783%
- Food & beverage$60517%
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 |
|---|---|---|
| Brainlab, Inc. | 15 | $3,407 |
| Siemens Medical Solutions USA, Inc. | 2 | $41 |
| Pfizer | 1 | $38 |
| Tactile Systems Technology Inc | 1 | $25 |
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
$3,512 in reported general payments places this provider in the 85th percentile of 105 radiation oncology providers in Colorado.
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 Aurora
- Meera PatelAurora$112K
- David RabenAurora$61K
- Christine FisherAurora$28K
- Karyn GoodmanAurora$12K
- Brian KavanaghAurora$2K
- Ryan LanningAurora$2K
- Dennis CarterAurora$955
- David BinderAurora$818
- Blair MurphyAurora$500
- Katherine TzouAurora$439
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.