Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · as published 2026-06-30 View official record Methodology

Covered recipient · General Payments record

EVAN ONG

Allopathic & Osteopathic Physicians Surgery Surgical Oncology

NPI
1073541959
CMS profile
1247555
Location
SEATTLE, WA

General Payments · PY2020–2025

$18,367.05

  • Reported across 13 records
  • CMS publication 2026-06-30

Latest program year · PY2025

$6,879.60

7 records · 0 disputed

Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.

How these totals are calculated
  • The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. Nothing is estimated, weighted, or combined across categories.
  • General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
  • Featured-page threshold (a presentation gate, not a judgment): records>=3 OR total>=100 (all years).
  • Methodology & Data — sourcing, labeling, and limitations.

By nature of payment

PY2025 · sorted by reported total

Nature of paymentAmountRecords
Consulting Fee $5,700.00 1
Travel and Lodging $785.96 1
Food and Beverage $393.64 5

By paying entity

PY2025 · sorted by reported total

Paying entityAmountRecords
HISTOSONICS, INC. $6,575.03 3
BOSTON SCIENTIFIC CORPORATION $304.57 4

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2020 $97.40 2
PY2021 $150.05 1
PY2024 $11,240.00 3
PY2025 $6,879.60 7

Payment records · PY2025 (7)

Sorted by paying entity, then date · as published by CMS

Program year 2025 202020212024 Record-level detail is published for PY2025; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
Boston Scientific Corporation $83.33 02/11/2025 Food and Beverage Undisputed 06/30/2026 1181160726 CMS
Boston Scientific Corporation $58.24 02/11/2025 Food and Beverage Undisputed 06/30/2026 1181160728 CMS
Boston Scientific Corporation $38.46 11/14/2025 Food and Beverage Undisputed 06/30/2026 1181160732 CMS
Boston Scientific Corporation $124.54 11/19/2025 Food and Beverage Undisputed 06/30/2026 1181160730 CMS
HISTOSONICS, INC. $5,700.00 08/05/2025 Consulting Fee Undisputed 06/30/2026 1221680056 CMS
HISTOSONICS, INC. $785.96 09/12/2025 Travel and Lodging Undisputed 06/30/2026 1233968934 CMS
HISTOSONICS, INC. $89.07 09/12/2025 Food and Beverage Undisputed 06/30/2026 1233993781 CMS

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-06-30
Program years on this page
2020, 2021, 2024, 2025
Source files
Dataset page · Bulk file · PY2020 , PY2021 , PY2024 , PY2025
Generated from
OP_DTL_GNRL_PGYR2025_P06302026_06032026.csv

One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.

Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.