Ralph Defronzo
Endocrinology, Diabetes & Metabolism · San Antonio, TXNPI 1851408843
Payments from drug & device makers
$4,759,587in general payments, 2019–2025
Across 527 payments — averaging $9031.47 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$2.8M
- Merck$965K
- Janssen Research & Development, LLC$237K
- Corcept Therapeutics$168K
- Novo Nordisk$150K
- Amgen$146K
- plus $259K from 23 others
General payments by program year
19
20
21
22
23
24
25
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(2 entities) | 241 | $2,835,023 |
| Merck | 5 | $965,377 |
| Janssen Research & Development, LLC | 1 | $237,333 |
| Corcept Therapeutics | 73 | $167,596 |
| Novo Nordisk | 87 | $150,000 |
| Amgen | 8 | $145,601 |
| Hikma Pharmaceuticals USA | 19 | $66,846 |
| Regeneron | 37 | $34,135 |
| Boehringer Ingelheim | 4 | $31,708 |
| Alnylam Pharmaceuticals Inc. | 3 | $20,880 |
| Johnson & Johnson | 6 | $14,375 |
| Novo Nordisk AS | 7 | $14,085 |
| Pfizer | 4 | $12,800 |
| GSK | 4 | $9,833 |
| Boehringer Ingelheim (phil.) Inc. | 2 | $9,060 |
| Renalytix AI, Inc. | 3 | $8,688 |
| AbbVie | 1 | $8,250 |
| Bayer | 8 | $8,036 |
| Boehringer Ingelheim Do Brasil Quimica E Farmaceutical Ltda. | 2 | $5,225 |
| Astrazeneca AB | 1 | $3,600 |
| Azurity Pharmaceuticals, Inc. | 2 | $3,120 |
| Dr.reddy's Laboratories,inc. | 1 | $2,503 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 2 | $2,490 |
| Boehringer Ingelheim RCV GmbH & Co KG | 1 | $2,471 |
| Xeris Pharmaceuticals, Inc. | 1 | $133 |
| Medtronic | 1 | $125 |
| Intercept Pharmaceuticals, Inc. | 1 | $124 |
| Madrigal Pharmaceuticals | 1 | $92 |
| Eli Lilly | 1 | $76 |
How this compares
$4,759,587 in reported general payments places this provider in the 95th percentile of 658 endocrinology, diabetes & metabolism providers in Texas.
See all endocrinology, diabetes & metabolism providers in Texas →
Other endocrinology, diabetes & metabolism in San Antonio
- Mark KipnesSan Antonio$10.3M
- Eugenio CersosimoSan Antonio$4M
- Devjit TripathySan Antonio$1.5M
- Carolina Solis-HerreraSan Antonio$1.3M
- Firas AkhrassSan Antonio$900K
- Julio RosenstockDallas$24.9M
- Michelle WelchShavano Park$17.3M
- Maria CabanillasHouston$16.4M
- Sumana GangiMesquite$13.2M
- Damaris VegaHouston$12.3M
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.