Joo Hwang, MD
Gastroenterology · Stanford, CANPI 1194815043
Payments from drug & device makers
Across 1,054 payments — averaging $966.71 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Olympus Corporation Of The Americas$372K
- Boston Scientific$308K
- Capsovision, Inc.$99K
- Covidien LP$80K
- Olympus America Inc.$43K
- Olympus Corporation$39K
- plus $79K from 15 others
Across 6 payments — averaging $1031.67 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.
- Medtronic$6K
What the payments were for
- Consulting fees$259,02725%
- Speaking & faculty fees$346,79634%
- Travel & lodging$69,4927%
- Food & beverage$23,3852%
- Education$320,20731%
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 |
|---|---|---|
| Olympus Corporation Of The Americas | 489 | $371,689 |
| Boston Scientific | 333 | $308,070 |
| Capsovision, Inc. | 13 | $98,561 |
| Covidien LP | 31 | $79,912 |
| Olympus America Inc. | 40 | $42,759 |
| Olympus Corporation | 35 | $39,410 |
| Medtronic | 42 | $36,076 |
| Micro-tech Endoscopy USA, Inc. | 14 | $12,013 |
| Olympus Medical Systems Corporation | 11 | $8,234 |
| Fujifilm Healthcare Americas Corporation | 8 | $7,889 |
| ERBE USA Inc | 11 | $5,900 |
| Lumendi LLC | 11 | $5,284 |
| Neptune Medical Inc. | 1 | $1,500 |
| Cook Medical LLC | 7 | $639 |
| US Endoscopy | 1 | $450 |
| Celltrion, Inc. | 1 | $150 |
| Lucid Diagnostics Inc. | 1 | $124 |
| 3-d Matrix, Inc. | 1 | $119 |
| Apollo Endosurgery US Inc | 2 | $69 |
| Mauna Kea Technologies, Inc. | 1 | $29 |
| AbbVie | 1 | $29 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- DISPOSABLE DISTAL ATTACHMENT$230,681
- Olympus$219,779
- Single Use Electrosurgical Knife KD-655$165,951
- ORISE$78,552
- GENERAL - THERAPIES$77,263
- Single Use Repositionable Clip$74,249
- CapsoCam Colon$64,675
- Resolution 360 Clip$50,048
- Olympus EMR & ESD Devices$46,468
- Olympus EndoTherapy Accessories$44,040
- Olympus Hemostasis Devices$38,812
- CapsoCam Plus$33,886
- Long Clip$25,979
- Cytosponge$22,400
- EVIS EXERA$16,147
- Olympus Capital Accessories$16,147
- ScopeGuide$16,147
- Hemostasis Clips$14,453
- VISIGLIDE$13,673
- Single Use Aspiration Needle NA-U200H$12,874
How this compares
$1,018,908 in reported general payments places this provider in the 95th percentile of 1,885 gastroenterology providers in California.
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 |
|---|---|---|
| Peg 3350-ElectrolyteSodium Chloride/Nahco3/Kcl/Peg | 26 | $370 |
Paid to pharmacies, not to this prescriber.
Other gastroenterology in Stanford
- Paul KwoStanford$1.5M
- Stephan RogallaStanford$791K
- Aparna GoelStanford$709K
- Peter WinkleCypress$116.7M
- Manuchehr DaraniSanta Ana$17.7M
- Jatinder PruthiLancaster$4.4M
- Long DangWestminster$4.3M
- Muhammad SheikhFresno$4.3M
- Gregory WienerChula Vista$3.5M
- Gil MelmedLos Angeles$3M
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.