Gregg Wendorf, MD
Gastroenterology · San Antonio, TXNPI 1952747248
Payments from drug & device makers
Across 394 payments — averaging $44.85 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Evoke Pharma, Inc.$12K
- AbbVie$2K
- Johnson & Johnson$1K
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$563
- Takeda Pharmaceuticals U.S.A., Inc.$345
- Phathom Pharmaceuticals, Inc.$301
- plus $2K from 21 others
What the payments were for
- Speaking & faculty fees$9,25652%
- Travel & lodging$1,6379%
- Food & beverage$6,69938%
- Education$800%
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 |
|---|---|---|
| Evoke Pharma, Inc. | 31 | $12,041 |
| AbbVie | 105 | $1,536 |
| Johnson & Johnson | 106 | $1,198 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 35 | $563 |
| Takeda Pharmaceuticals U.S.A., Inc. | 17 | $345 |
| Phathom Pharmaceuticals, Inc. | 17 | $301 |
| Gilead | 14 | $247 |
| Enterra Medical, Inc. | 2 | $241 |
| Ipsen Biopharmaceuticals, Inc | 10 | $189 |
| Madrigal Pharmaceuticals | 9 | $152 |
| Bristol Myers Squibb | 9 | $144 |
| Lilly USA, LLC | 7 | $124 |
| Sanofi | 5 | $111 |
| QOL Medical, LLC | 5 | $102 |
| Ardelyx, Inc. | 4 | $77 |
| Celltrion USA Inc. | 3 | $56 |
| Merck | 2 | $52 |
| Ironwood Pharmaceuticals, Inc | 2 | $43 |
| Nestle Healthcare Nutrition Inc. | 2 | $42 |
| Aimmune Therapeutics, Inc. | 1 | $24 |
| Regeneron Healthcare Solutions, Inc. | 1 | $19 |
| Braintree Laboratories, Inc. | 1 | $15 |
| Intercept Pharmaceuticals, Inc. | 1 | $14 |
| Pfizer | 1 | $14 |
| Olympus America Inc. | 1 | $13 |
| Redhill Biopharma Inc. | 1 | $12 |
| Gastrogpo, LLC | 2 | $0 |
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
$17,672 in reported general payments places this provider in the 80th percentile of 1,350 gastroenterology 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 |
|---|---|---|
| PrivigenImmun Glob G(Igg)/Pro/Iga 0-50 | 14 | $170,071 |
| ZenpepLipase/Protease/Amylase | 12 | $72,538 |
| CreonLipase/Protease/Amylase | 26 | $68,751 |
| XifaxanRifaximin | 34 | $67,947 |
| LinzessLinaclotide | 71 | $67,354 |
| RezdiffraResmetirom | 16 | $62,899 |
| GimotiMetoclopramide Hcl | 28 | $59,262 |
| Gamunex-CImmune Globul G/Gly/Iga Avg 46 | 14 | $58,092 |
| TrulancePlecanatide | 63 | $43,628 |
| Mesalamine | 31 | $23,086 |
| MotegrityPrucalopride Succinate | 29 | $20,734 |
| Promethazine Hcl | 306 | $20,070 |
| Dexlansoprazole DrDexlansoprazole | 66 | $17,511 |
| MovantikNaloxegol Oxalate | 15 | $10,876 |
| PlenvuPeg3350/Sod Sul/Nacl/Kcl/Asb/C | 75 | $10,220 |
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 |
|---|---|---|
| AbbVieCreon, Linzess | $1,536 | $136,10597 claims |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLCXifaxan, Trulance, Plenvu | $563 | $121,795172 claims |
| Aimmune Therapeutics, Inc.Zenpep | $24 | $72,53812 claims |
| Madrigal PharmaceuticalsRezdiffra | $152 | $62,89916 claims |
| Evoke Pharma, Inc.Gimoti | $12,041 | $59,26228 claims |
| Takeda Pharmaceuticals U.S.A., Inc.Motegrity | $345 | $20,73429 claims |
| Redhill Biopharma Inc.Movantik | $12 | $10,87615 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 1,350 gastroenterology providers in Texas.
Other gastroenterology in San Antonio
- Eric LawitzSan Antonio$59.5M
- Jeff BullockSan Antonio$4.3M
- Nicholas MartinezSan Antonio$1.6M
- Charles RandallSan Antonio$1.6M
- George DuvallTyler$17.5M
- John FordtranDallas$9.9M
- Timothy RitterSouthlake$7.7M
- Parvez MantryDallas$6.4M
- Mazen NoureddinHouston$6.1M
- Nadege GunnWaco$5.7M
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.