Charles Lostak, DO
Gastroenterology · Dallas, TXNPI 1477549913
Payments from drug & device makers
Across 407 payments — averaging $15.94 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$3K
- Takeda Pharmaceuticals U.S.A., Inc.$665
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$549
- Johnson & Johnson$497
- Bristol Myers Squibb$418
- QOL Medical, LLC$323
- plus $1K from 23 others
What the payments were for
- Food & beverage$6,459100%
- Education$280%
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 |
|---|---|---|
| AbbVie(2 entities) | 184 | $2,741 |
| Takeda Pharmaceuticals U.S.A., Inc. | 36 | $665 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 34 | $549 |
| Johnson & Johnson(2 entities) | 24 | $497 |
| Bristol Myers Squibb | 43 | $418 |
| QOL Medical, LLC | 20 | $323 |
| Nestle Healthcare Nutrition Inc. | 7 | $131 |
| Ardelyx, Inc. | 5 | $124 |
| Lilly USA, LLC | 4 | $106 |
| Intercept Pharmaceuticals, Inc. | 5 | $97 |
| Merck | 5 | $93 |
| Braintree Laboratories, Inc. | 5 | $89 |
| Ferring Pharmaceuticals Inc. | 4 | $86 |
| Aimmune Therapeutics, Inc. | 5 | $85 |
| Vivus LLC | 5 | $83 |
| Evoke Pharma, Inc. | 4 | $65 |
| Madrigal Pharmaceuticals | 2 | $56 |
| Ironwood Pharmaceuticals, Inc | 3 | $54 |
| Phathom Pharmaceuticals, Inc. | 2 | $36 |
| Boston Scientific | 1 | $30 |
| Sanofi | 1 | $24 |
| Shionogi Inc | 1 | $21 |
| Enterra Medical, Inc. | 1 | $21 |
| Pfizer | 1 | $20 |
| Regeneron Healthcare Solutions, Inc. | 1 | $19 |
| Redhill Biopharma Inc. | 1 | $18 |
| Celltrion USA Inc. | 1 | $14 |
| Shire North American Group Inc | 1 | $14 |
| Capsovision, Inc. | 1 | $8 |
How this compares
$6,486 in reported general payments places this provider in the 60th 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 |
|---|---|---|
| LinzessLinaclotide | 58 | $74,410 |
| ClenpiqSod Picosulf/Mag Ox/Citric Ac | 163 | $28,343 |
| Mesalamine | 27 | $16,774 |
| Pantoprazole Sodium | 596 | $7,952 |
| Omeprazole | 163 | $3,929 |
| Mesalamine ErMesalamine | 19 | $3,767 |
| Famotidine | 127 | $3,343 |
| Sucralfate | 73 | $2,499 |
| Esomeprazole Magnesium | 26 | $2,430 |
| Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine | 38 | $1,806 |
| Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl | 56 | $841 |
| Dicyclomine Hcl | 30 | $773 |
| Peg-3350 And ElectrolytesPeg3350/Sod Sulf,bicarb,cl/Kcl | 31 | $452 |
| Ondansetron Hcl | 27 | $364 |
| Metoclopramide Hcl | 11 | $74 |
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 |
|---|---|---|
| AbbVieLinzess | $2,741 | $74,41058 claims |
| Ferring Pharmaceuticals Inc.Clenpiq | $86 | $28,343163 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 60th percentile of 1,350 gastroenterology providers in Texas.
Other gastroenterology in Dallas
- John FordtranDallas$9.9M
- Parvez MantryDallas$6.4M
- Michael BrownDallas$5.5M
- Jacqueline O LearyDallas$1.4M
- Themistocles DassopoulosDallas$1.1M
- Moheb BoktorDallas$1M
- Lisa VanwagnerDallas$486K
- Rodney InfanteDallas$442K
- Eric LawitzSan Antonio$59.5M
- George DuvallTyler$17.5M
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.