Zachary Lopater, MD
Radiation Oncology · Macon, GANPI 1841515418
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 110 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 36 manufacturers, the largest accounting for just 18.1% — the pattern of someone who eats at a lot of different presentations. 2025 is the largest year on record at $661, 2.4 times the $272 reported in 2019.
Across 110 payments — averaging $24.49 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Boston Scientific$486
- Bayer$377
- AstraZeneca$346
- Regeneron Healthcare Solutions, Inc.$237
- Merck$195
- Teleflex LLC$193
- plus $859 from 30 others
What the payments were for
- Food & beverage$2,694100%
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 |
|---|---|---|
| Boston Scientific | 16 | $486 |
| Bayer | 14 | $377 |
| AstraZeneca(2 entities) | 13 | $346 |
| Regeneron Healthcare Solutions, Inc. | 9 | $237 |
| Merck | 10 | $195 |
| Teleflex LLC | 4 | $193 |
| Novartis | 5 | $87 |
| Isoray, Inc | 5 | $77 |
| Jazz Pharmaceuticals Inc. | 2 | $74 |
| Sanofi | 2 | $51 |
| Blue Earth Diagnostics | 2 | $47 |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $40 |
| Seagen Inc. | 2 | $38 |
| Siemens Medical Solutions USA, Inc. | 1 | $37 |
| Novocure Inc. | 2 | $27 |
| Tempus AI, Inc | 1 | $25 |
| AVEO Pharmaceuticals, Inc. | 1 | $23 |
| Progenics Pharmaceuticals, Inc. | 1 | $23 |
| Karyopharm Therapeutics Inc. | 1 | $22 |
| Tesaro, Inc. | 1 | $22 |
| Eisai Inc. | 1 | $21 |
| Puma Biotechnology, Inc. | 1 | $21 |
| Bristol Myers Squibb | 1 | $21 |
| Exelixis Inc. | 1 | $19 |
| Pharmacosmos Therapeutics Inc. | 1 | $18 |
| Johnson & Johnson | 1 | $18 |
| Ipsen Biopharmaceuticals, Inc | 1 | $18 |
| ADC Therapeutics America, Inc. | 1 | $16 |
| Coherus Oncology, Inc. | 1 | $16 |
| Myriad Genetic Laboratories, Inc. | 1 | $16 |
| Geron Corporation | 1 | $15 |
| AbbVie | 1 | $14 |
| Hologic Sales And Service, LLC | 1 | $14 |
| Bioprotect Medical, Inc. | 1 | $14 |
| Genentech USA, Inc. | 1 | $13 |
| Amgen | 1 | $13 |
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.
- Barrigel$137
- TAGRISSO$125
- Nubeqa$124
- GENERAL KIDNEY STONE DISEASE$105
How this compares
$2,694 in reported general payments places this provider in the 85th percentile of 165 radiation oncology providers in Georgia.
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 |
|---|---|---|
| Tamsulosin Hcl | 86 | $676 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 12 | $276 |
| Lidocaine Hcl ViscousLidocaine Hcl | 15 | $199 |
| Oxybutynin Chloride ErOxybutynin Chloride | 33 | $133 |
| Gabapentin | 12 | $127 |
| Ciprofloxacin Hcl | 14 | $59 |
Paid to pharmacies, not to this prescriber.
Other radiation oncology in Macon
- Song Chu KoMacon$2K
- Kazumi ChinoMacon$2K
- Kevin TranMacon$1K
- David ColeMacon$1K
- Kristin HigginsAtlanta$230K
- Walter CurranAtlanta$83K
- Ian CrockerAtlanta$51K
- Sagar PatelAtlanta$32K
- Hui-Kuo ShuAtlanta$25K
- Wilfred WilliamsAtlanta$15K
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.