Guillermo Madero, MD
Internal Medicine · San Antonio, TXNPI 1235384439
Payments from drug & device makers
Across 116 payments — averaging $21.77 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novo Nordisk$473
- Boehringer Ingelheim$206
- Lilly USA, LLC$195
- AstraZeneca$192
- AbbVie$174
- Stryker$172
- plus $1K from 19 others
What the payments were for
- Food & beverage$2,526100%
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 |
|---|---|---|
| Novo Nordisk | 26 | $473 |
| Boehringer Ingelheim | 14 | $206 |
| Lilly USA, LLC | 5 | $195 |
| AstraZeneca(2 entities) | 7 | $192 |
| AbbVie | 10 | $174 |
| Stryker | 1 | $172 |
| Abbott | 6 | $144 |
| Merck | 7 | $125 |
| Sanofi-aventis U.S. LLC | 4 | $118 |
| Madrigal Pharmaceuticals | 1 | $118 |
| Amgen(2 entities) | 7 | $112 |
| Bayer | 4 | $95 |
| GSK | 4 | $63 |
| Pfizer | 3 | $54 |
| Otsuka America Pharmaceutical, Inc. | 2 | $45 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 3 | $41 |
| Sumitomo Pharma America, Inc. | 2 | $33 |
| Aimmune Therapeutics, Inc. | 2 | $30 |
| Sunovion Pharmaceuticals Inc. | 2 | $28 |
| Kyowa Kirin, Inc. | 1 | $21 |
| Cvrx, Inc. | 1 | $20 |
| Novartis | 1 | $20 |
| Astellas Pharma US Inc | 1 | $19 |
| Teva Pharmaceuticals USA, Inc. | 1 | $15 |
| Integra Lifesciences Corporation | 1 | $14 |
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
$2,526 in reported general payments places this provider in the 80th percentile of 7,675 internal medicine providers in Texas.
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 |
|---|---|---|
| JardianceEmpagliflozin | 163 | $273,599 |
| OzempicSemaglutide | 167 | $201,985 |
| TrulicityDulaglutide | 66 | $114,340 |
| JanuviaSitagliptin Phosphate | 67 | $100,815 |
| EliquisApixaban | 84 | $85,259 |
| MounjaroTirzepatide | 65 | $76,466 |
| RybelsusSemaglutide | 36 | $65,875 |
| FarxigaDapagliflozin Propanediol | 42 | $56,482 |
| MyrbetriqMirabegron | 52 | $56,143 |
| Bydureon BciseExenatide Microspheres | 33 | $48,998 |
| JanumetSitagliptin Phos/Metformin Hcl | 29 | $36,631 |
| SynjardyEmpagliflozin/Metformin Hcl | 17 | $28,033 |
| Trelegy ElliptaFluticasone/Umeclidin/Vilanter | 28 | $25,763 |
| LinzessLinaclotide | 35 | $24,943 |
| XareltoRivaroxaban | 16 | $23,495 |
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 |
|---|---|---|
| Boehringer IngelheimJardiance, Synjardy, Tradjenta | $206 | $324,057194 claims |
| Novo NordiskOzempic, Rybelsus | $473 | $267,860203 claims |
| Lilly USA, LLCTrulicity, Mounjaro | $195 | $190,806131 claims |
| MerckJanuvia, Janumet | $125 | $137,44696 claims |
| PfizerEliquis | $54 | $85,25984 claims |
| AstraZenecaFarxiga, Symbicort | $192 | $63,41968 claims |
| Astellas Pharma US IncMyrbetriq | $19 | $56,14352 claims |
| GSKTrelegy Ellipta, Breo Ellipta | $63 | $35,68046 claims |
| AbbVieLinzess | $174 | $24,94335 claims |
| Sumitomo Pharma America, Inc.Gemtesa | $33 | $9,29411 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 80th percentile of 7,675 internal medicine providers in Texas.
Other internal medicine in San Antonio
- Robert BassSan Antonio$25.6M
- Hernan SalazarSan Antonio$18.5M
- Dennis RuffSan Antonio$7.5M
- Cassandra KeySan Antonio$5.6M
- Jan BurgerHouston$47.3M
- Nitin JainHouston$33.2M
- Muhammad IrfanTomball$30.6M
- Aung NaingHouston$30.6M
- Preetesh JainHouston$19.5M
- Paolo StratiHouston$19.2M
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.