Saowanee Ngamruengphong, MD
Gastroenterology · Baltimore, MDNPI 1285898023
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $54,570 of the $89,561 with a category attached, or 60.9%. Boston Scientific accounts for 72.9% of it on its own, with 20 other manufacturers making up the rest. Reporting peaked in 2023 at $45,258 and has fallen 99.2% since, to $367 in 2025. Among gastroenterology clinicians in MD 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 174 payments — averaging $514.72 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Boston Scientific$65K
- Olympus America Inc.$10K
- Olympus Corporation Of The Americas$10K
- Medtronic$1K
- Pentax Of America, Inc.$596
- Cook Medical LLC$580
- plus $2K from 15 others
What the payments were for
- Consulting fees$12,95714%
- Speaking & faculty fees$54,57061%
- Travel & lodging$6,0037%
- Food & beverage$7,2468%
- Education$8,75810%
- Entertainment$270%
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 |
|---|---|---|
| Boston Scientific | 82 | $65,247 |
| Olympus America Inc. | 17 | $10,365 |
| Olympus Corporation Of The Americas | 23 | $9,975 |
| Medtronic | 13 | $1,166 |
| Pentax Of America, Inc. | 4 | $596 |
| Cook Medical LLC | 7 | $580 |
| Fujifilm Healthcare Americas Corporation | 1 | $507 |
| Braintree Laboratories, Inc. | 6 | $290 |
| Takeda Pharmaceuticals U.S.A., Inc. | 7 | $178 |
| Sanofi | 2 | $150 |
| Creo Medical Inc. | 1 | $134 |
| Covidien LP | 1 | $80 |
| ERBE USA Inc | 1 | $75 |
| Micro-tech Endoscopy USA, Inc. | 2 | $40 |
| Johnson & Johnson | 1 | $38 |
| Mallinckrodt Hospital Products Inc. | 1 | $36 |
| Ambu Inc. | 1 | $27 |
| Ipsen Biopharmaceuticals, Inc | 1 | $25 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $23 |
| AbbVie | 1 | $17 |
| Apollo Endosurgery US Inc | 1 | $11 |
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.
- ORISE$18,916
- Single Use Electrosurgical Knife KD-655$10,110
- EndoClot PHS$9,915
- EndoClot SIS$9,915
- DISPOSABLE DISTAL ATTACHMENT$9,182
- Olympus$8,841
- GENERAL - THERAPIES$3,800
- RESOLUTION CLIP$3,375
- Resolution 360 Clip$708
- FUJIFILM$507
- GI Genius$421
- Single Use Electrosurgical Hemostatic Forceps$397
- EchoTip$272
- SUTAB$267
- SUFLAVE$267
- NEXPOWDER$158
- ECHOTIP INSIGHT$138
- GENERAL - BILIARY DEVICES$136
- Speedboat Ultraslim (SB1L)$134
- Hemospray$127
How this compares
$89,561 in reported general payments places this provider in the 95th percentile of 455 gastroenterology providers in Maryland.
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 |
|---|---|---|
| Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates | 83 | $4,552 |
| Peg 3350-ElectrolyteSodium Chloride/Nahco3/Kcl/Peg | 107 | $2,295 |
| Pantoprazole Sodium | 19 | $592 |
| Famotidine | 15 | $339 |
| Omeprazole | 14 | $146 |
Paid to pharmacies, not to this prescriber.
Other gastroenterology in Baltimore
- Sergey KantsevoyBaltimore$1.1M
- Anurag MaheshwariBaltimore$803K
- Aline Charabaty PishvaianBaltimore$631K
- Mouen KhashabBaltimore$440K
- Raymond CrossBaltimore$341K
- Paul ThuluvathBaltimore$231K
- Niraj JaniBaltimore$214K
- Aminur KhanBaltimore$118K
- Eric GoldbergBaltimore$110K
- Venkata AkshintalaBaltimore$83K
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.