Mary Mayer, MD
Medical Oncology · Indianapolis, INNPI 1770588808
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $930 of the $1,038 with a category attached, or 89.6%. 18 manufacturers reported payments, led by AstraZeneca at 40.0% of the total. Reporting peaked in 2019 at $345 and has fallen 75.5% since, to $85 in 2025. That places this record below the midpoint for medical oncology clinicians in IN, where the typical reported total is $2,472.
Across 34 payments — averaging $30.52 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$415
- Adaptive Biotechnologies Corporation$118
- Johnson & Johnson$97
- Tempus AI, Inc$61
- Pfizer$49
- Pharmacyclics LLC, An Abbvie Company$44
- plus $253 from 12 others
Across 86 payments — averaging $3595.91 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.
- Incyte Corporation$155K
- AstraZeneca$154K
What the payments were for
- Food & beverage$93090%
- Education$10810%
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 | 5 | $415 |
| Adaptive Biotechnologies Corporation | 1 | $118 |
| Johnson & Johnson(2 entities) | 6 | $97 |
| Tempus AI, Inc | 1 | $61 |
| Pfizer | 4 | $49 |
| Pharmacyclics LLC, An Abbvie Company | 1 | $44 |
| Menarini Silicon Biosystems, Inc. | 1 | $41 |
| Merck | 3 | $39 |
| Novartis | 2 | $26 |
| EMD Serono, Inc. | 2 | $26 |
| Daiichi Sankyo Inc. | 1 | $21 |
| Genentech USA, Inc. | 1 | $18 |
| Aurobindo Pharma USA, Inc. | 1 | $18 |
| Sirtex Medical Inc | 1 | $15 |
| Teva Pharmaceuticals USA, Inc. | 1 | $14 |
| Pharmaessentia USA Corporation | 1 | $12 |
| Gilead | 1 | $12 |
| E.r. Squibb & Sons, L.L.C. | 1 | $12 |
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
$1,038 in reported general payments places this provider in the 30th percentile of 67 medical 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 |
|---|---|---|
| IbrancePalbociclib | 24 | $350,733 |
| EliquisApixaban | 270 | $322,833 |
| BrukinsaZanubrutinib | 11 | $149,815 |
| CalquenceAcalabrutinib Maleate | 12 | $118,400 |
| XareltoRivaroxaban | 53 | $65,131 |
| Enoxaparin Sodium | 57 | $23,349 |
| Letrozole | 700 | $20,839 |
| Exemestane | 34 | $5,332 |
| Ondansetron Hcl | 88 | $2,894 |
| Tamoxifen Citrate | 90 | $2,279 |
| Anastrozole | 135 | $2,211 |
| Acyclovir | 101 | $1,514 |
| Dexamethasone | 120 | $1,426 |
| Warfarin Sodium | 157 | $1,356 |
| Omeprazole | 62 | $1,019 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| PfizerIbrance, Eliquis | $49 | $673,565294 claims |
| AstraZenecaCalquence | $415 | $118,40012 claims |
| Johnson & JohnsonXarelto | $97 | $65,13153 claims |
| Teva Pharmaceuticals USA, Inc.Acyclovir | $14 | $1,514101 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 30th percentile of 67 medical oncology providers in Indiana.
Other medical oncology in Indianapolis
- Natraj AmmakkanavarIndianapolis$129K
- Bert OneilIndianapolis$89K
- Pablo BedanoIndianapolis$52K
- Gregory SmithIndianapolis$46K
- Ashwin VasudevamurthyIndianapolis$44K
- Daniel SonnenburgIndianapolis$37K
- Sumeet BhatiaIndianapolis$24K
- Michael SlaughterIndianapolis$17K
- Elsayed AlyIndianapolis$9K
- Anuj AgarwalaIndianapolis$8K
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.