Harvey Tatum, MD
Gastroenterology · Tulsa, OKNPI 1659333623
Payments from drug & device makers
Across 1,574 payments — averaging $1629.63 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$1M
- Vanda Pharmaceuticals Inc.$794K
- Takeda Pharmaceuticals U.S.A., Inc.$347K
- Gilead$153K
- Novartis$87K
- Genentech, Inc.$79K
- plus $102K from 34 others
Across 10 payments — averaging $93.86 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.
- AbbVie$939
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
$2,565,036 in reported general payments places this provider in the 95th percentile of 133 gastroenterology providers in Oklahoma.
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 Tulsa
- Aaron FiekerTulsa$232K
- Kevin McNamaraTulsa$223K
- David MorrisTulsa$211K
- Jeffrey HuntTulsa$155K
- Roy ThompsonTulsa$16K
- Vasudevan RaghuramanTulsa$14K
- William BriggsTulsa$14K
- Sheldon BergerTulsa$14K
- Patrick VolakTulsa$13K
- Matt BlankenshipTulsa$12K
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.