Gaurav Gaiha, MD
Gastroenterology · Boston, MANPI 1518221076
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $3,810 of the $4,047 with a category attached, or 94.2%. Gilead accounts for 96.4% of it on its own, with 2 other manufacturers making up the rest. 2025 is the largest year on record at $3,810, more than ten times the $87 reported in 2020.
Across 6 payments — averaging $674.44 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Gilead$4K
- Merck$87
- Pfizer$61
Across 7 payments — averaging $125,306 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.
- Merck$639K
- Gilead$130K
- Modernatx, Inc.$108K
What the payments were for
- Consulting fees$3,81094%
- Travel & lodging$692%
- Food & beverage$1073%
- Education$612%
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.
How this compares
$4,047 in reported general payments places this provider in the 70th percentile of 579 gastroenterology providers in Massachusetts.
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 | 22 | $19,907 |
| Erythromycin Ethylsuccinate | 11 | $1,607 |
| Omeprazole | 58 | $1,450 |
| Esomeprazole Magnesium | 18 | $955 |
| Famotidine | 31 | $863 |
| Colesevelam Hcl | 12 | $817 |
| Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl | 56 | $809 |
| Prochlorperazine Maleate | 14 | $789 |
| Ondansetron OdtOndansetron | 13 | $301 |
| Olanzapine | 25 | $285 |
| Gabapentin | 15 | $235 |
| Diazepam | 11 | $122 |
Paid to pharmacies, not to this prescriber.
Other gastroenterology in Boston
- Hiroyuki AiharaBoston$728K
- Jessica AllegrettiBoston$696K
- John LeungBoston$682K
- Ramnik XavierBoston$567K
- Adam CheifetzBoston$512K
- Carlo TraversoBoston$447K
- Tyler BerzinBoston$215K
- Marvin RyouBoston$162K
- Nneka UfereBoston$153K
- Christopher ThompsonBoston$127K
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.