Hiroyuki Aihara, MD
Gastroenterology · Boston, MANPI 1619395795
Payments from drug & device makers
What this record shows
The money is spread across several categories — education (42.7%), speaking fees and consulting fees — rather than concentrated in one kind of arrangement. 21 manufacturers reported payments, led by Olympus Corporation Of The Americas at 47.5% of the total. Among gastroenterology clinicians in MA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 813 payments — averaging $894.98 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Olympus Corporation Of The Americas$346K
- Boston Scientific$233K
- Fujifilm Healthcare Americas Corporation$39K
- Covidien LP$22K
- Conmed Corporation$19K
- Olympus Medical Systems Corporation$14K
- plus $55K from 15 others
Across 4 payments — averaging $65,131 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.
- Boston Scientific$261K
What the payments were for
- Consulting fees$159,60622%
- Speaking & faculty fees$210,14029%
- Grants$1,2020%
- Travel & lodging$35,6185%
- Food & beverage$10,5621%
- Education$310,48843%
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 | 482 | $345,719 |
| Boston Scientific | 194 | $232,821 |
| Fujifilm Healthcare Americas Corporation | 39 | $38,769 |
| Covidien LP | 7 | $21,552 |
| Conmed Corporation | 7 | $19,256 |
| Olympus Medical Systems Corporation | 18 | $14,480 |
| Olympus Corporation | 15 | $12,789 |
| Olympus America Inc. | 17 | $12,648 |
| Johnson & Johnson | 8 | $7,083 |
| Micro-tech Endoscopy USA, Inc. | 3 | $7,000 |
| Capsovision, Inc. | 1 | $4,667 |
| Gyrus ACMI, Inc. | 3 | $3,575 |
| Medtronic | 6 | $2,393 |
| Cook Incorporated | 2 | $1,767 |
| Lumendi LLC | 2 | $1,652 |
| Ovesco Endoscopy USA, Inc. | 1 | $589 |
| Cook Medical LLC | 3 | $268 |
| Applied Medical Resources Corporation | 1 | $188 |
| Steris Corporation | 2 | $169 |
| ERBE USA Inc | 1 | $140 |
| Apollo Endosurgery US Inc | 1 | $91 |
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.
- Single Use Electrosurgical Knife KD-655$215,277
- DISPOSABLE DISTAL ATTACHMENT$207,262
- Olympus$198,199
- ORISE$113,316
- Olympus EMR & ESD Devices$82,580
- Olympus Hemostasis Devices$71,926
- Olympus EndoTherapy Accessories$71,302
- GENERAL - THERAPIES$64,682
- Single Use Repositionable Clip$40,904
- Long Clip$29,828
- FUJIFILM$26,117
- EVIS EXERA$13,616
- Olympus Capital Accessories$13,616
- ScopeGuide$13,616
- Olympus GI Accessories$10,150
- RESOLUTION CLIP$7,559
- ESD - EUS$7,200
- BEAMER SYSTEM$7,143
- DVI CABLE 3M$5,843
- Emprint$5,600
How this compares
$727,616 in reported general payments places this provider in the 95th 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 |
|---|---|---|
| Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl | 69 | $972 |
| Omeprazole | 12 | $85 |
Paid to pharmacies, not to this prescriber.
Other gastroenterology in Boston
- 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
- Scott SnapperBoston$126K
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.