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

ROBERT D SIEW

Allopathic & Osteopathic Physicians Internal Medicine

NPI
1578539516
CMS profile
297943
Location
PASADENA, CA

General Payments · PY2019–2025

$2,596.55

  • Reported across 122 records
  • CMS publication 2026-06-30

Latest program year · PY2025

$281.12

13 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
Food and Beverage $281.12 13

By paying entity

PY2025 · sorted by reported total

Paying entityAmountRecords
GlaxoSmithKline, LLC. $143.84 7
Verona Pharma, Inc. $55.75 2
Pulmonx Corporation $43.58 2
Actelion Pharmaceuticals US, Inc. $21.45 1
Lilly USA, LLC $16.50 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $626.21 34
PY2020 $509.28 26
PY2021 $510.33 24
PY2022 $236.86 11
PY2023 $94.93 4
PY2024 $337.82 10
PY2025 $281.12 13

Payment records · PY2025 (13)

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

Program year 2025 201920202021202220232024 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
Actelion Pharmaceuticals US, Inc. $21.45 07/02/2025 Food and Beverage Undisputed 06/30/2026 1174184913 CMS
GlaxoSmithKline, LLC. $22.76 02/11/2025 Food and Beverage Undisputed 06/30/2026 1190935479 CMS
GlaxoSmithKline, LLC. $16.18 03/19/2025 Food and Beverage Undisputed 06/30/2026 1191727144 CMS
GlaxoSmithKline, LLC. $19.03 04/15/2025 Food and Beverage Undisputed 06/30/2026 1191762407 CMS
GlaxoSmithKline, LLC. $24.05 04/29/2025 Food and Beverage Undisputed 06/30/2026 1191402688 CMS
GlaxoSmithKline, LLC. $20.28 06/03/2025 Food and Beverage Undisputed 06/30/2026 1190787413 CMS
GlaxoSmithKline, LLC. $20.77 09/25/2025 Food and Beverage Undisputed 06/30/2026 1191256745 CMS
GlaxoSmithKline, LLC. $20.77 10/20/2025 Food and Beverage Undisputed 06/30/2026 1190492616 CMS
Lilly USA, LLC $16.50 05/01/2025 Food and Beverage Undisputed 06/30/2026 1186923664 CMS
Pulmonx Corporation $19.36 09/11/2025 Food and Beverage Undisputed 06/30/2026 1199548393 CMS
Pulmonx Corporation $24.22 10/21/2025 Food and Beverage Undisputed 06/30/2026 1199548396 CMS
Verona Pharma, Inc. $30.32 06/24/2025 Food and Beverage Undisputed 06/30/2026 1233799532 CMS
Verona Pharma, Inc. $25.43 08/11/2025 Food and Beverage Undisputed 06/30/2026 1233799518 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
2019, 2020, 2021, 2022, 2023, 2024, 2025
Source files
Dataset page · Bulk file · PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024 , PY2025
Generated from
OP_DTL_GNRL_PGYR2025_P06302026_06032026.csv

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