Calvin Pan, MD
Gastroenterology · Flushing, NYNPI 1427062108
Payments from drug & device makers
Across 918 payments — averaging $745.49 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Gilead$367K
- AbbVie$172K
- Nestle Healthcare Nutrition Inc.$66K
- Intercept Pharmaceuticals, Inc.$48K
- Shionogi Inc$9K
- GSK$7K
- plus $15K from 22 others
Across 1 payment — averaging $77.78 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Gilead$78
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 |
|---|---|---|
| Gilead | 368 | $366,561 |
| AbbVie(2 entities) | 230 | $171,572 |
| Nestle Healthcare Nutrition Inc. | 95 | $66,499 |
| Intercept Pharmaceuticals, Inc. | 50 | $48,189 |
| Shionogi Inc | 14 | $9,168 |
| GSK | 4 | $6,892 |
| Ironwood Pharmaceuticals, Inc | 9 | $5,776 |
| Intra-sana Laboratories | 13 | $3,421 |
| Siemens Medical Solutions USA, Inc. | 4 | $2,397 |
| Eisai Inc. | 2 | $1,370 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 40 | $633 |
| Ardelyx, Inc. | 24 | $481 |
| Vivus LLC | 20 | $387 |
| Takeda Pharmaceuticals U.S.A., Inc. | 17 | $343 |
| Bristol Myers Squibb | 6 | $134 |
| Ipsen Biopharmaceuticals, Inc | 1 | $104 |
| Phathom Pharmaceuticals, Inc. | 3 | $67 |
| Braintree Laboratories, Inc. | 3 | $48 |
| Madrigal Pharmaceuticals | 2 | $46 |
| QOL Medical, LLC | 2 | $45 |
| Echosens North America, Inc. | 2 | $44 |
| Redhill Biopharma Inc. | 2 | $39 |
| Aimmune Therapeutics, Inc. | 2 | $38 |
| Celltrion USA Inc. | 1 | $29 |
| Otsuka America Pharmaceutical, Inc. | 1 | $23 |
| Exact Sciences | 1 | $22 |
| Orphalan Inc | 1 | $19 |
| Ferring Pharmaceuticals Inc. | 1 | $15 |
How this compares
$684,364 in reported general payments places this provider in the 95th percentile of 1,682 gastroenterology providers in New York.
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.
Other gastroenterology in Flushing
- Michael GerdisYonkers$11.9M
- David HudesmanNew York$3.6M
- Ellen ScherlNew York$2.9M
- Igor GrosmanBrooklyn$2.8M
- Bruce SandsNew York$2.8M
- Arun SwaminathNew York$2.7M
- Sonal KumarNew York$2.3M
- David Carr LockeNew York$2.1M
- Arthur KornbluthNew York$1.9M
- Maya SrivastavaWilliamsville$1.8M
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.