RxDoctor Payments Data

Syam Gaddam, MD

Gastroenterology · Garden Grove, CANPI 1275510711

Payments from drug & device makers

$5,530in general payments, 2019–2025

Across 257 payments — averaging $21.52 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

  • Gilead$1K
  • Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$836
  • Madrigal Pharmaceuticals$756
  • Ardelyx, Inc.$640
  • Pfizer$601
  • AbbVie$431
  • plus $1K from 15 others

What the payments were for

  • Food & beverage$5,510100%
  • Education$200%

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

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.

How this compares

$5,530 in reported general payments places this provider in the 65th percentile of 1,885 gastroenterology providers in California.

See all gastroenterology providers in California

Medicare billing

Part B allowed, 2024
$187,429
Medicare patients
484
Services billed
1,622

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

DrugClaimsCost to plans & patients
LinzessLinaclotide107$79,994
EliquisApixaban28$24,404
OzempicSemaglutide22$23,538
VemlidyTenofovir Alafenamide14$22,536
TrulancePlecanatide28$17,581
ViberziEluxadoline11$17,331
Mesalamine21$12,694
Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates158$9,407
Dexlansoprazole DrDexlansoprazole16$5,802
Mesalamine ErMesalamine12$4,306
Lansoprazole119$2,414
Omeprazole235$2,084
Ursodiol11$2,070
Esomeprazole Magnesium35$1,915
Hydrocortisone36$1,759

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.

CompanyPaid to this providerPart D cost of their drugs
AbbVieLinzess, Viberzi$431$97,325118 claims
PfizerEliquis$601$24,40428 claims
GileadVemlidy$1,040$22,53614 claims
Salix Pharmaceuticals, A Division Of Bausch Health US, LLCTrulance$836$17,58128 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 65th percentile of 1,885 gastroenterology providers in California.

Other gastroenterology in Garden Grove

See the full list for California

Where these figures come from

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