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

Covered recipient · General Payments record

DONALD Y SIAO

Allopathic & Osteopathic Physicians Family Medicine

NPI
1861415374
CMS profile
175542
Location
SAN JOSE, CA

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

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General Payments · PY2019 · Entire year

$2,490.16

167 records · 0 disputed

Summary and payment records

  • CMS publication 2026-06-30
Read the payment records

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

— Centers for Medicare & Medicaid Services, Open Payments

A reported payment reflects a financial relationship a company disclosed. It does not indicate wrongdoing or a conflict of interest, and it says nothing about the quality of a provider's care.

These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

How these totals are calculated
  • This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. 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.
  • Methodology & Data — sourcing, labeling, and limitations.

Provider summaries generated . CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state. View the official CMS record ↗

By nature of payment

PY2019 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $2,401.66 152
Education $88.50 15

By paying entity

PY2019 · entire year · sorted by reported total

Payment records · PY2019

Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them

General Payments · PY2019 · Physicians and non-physician practitioners · CMS publication 2026-06-30

167 matching records · $2,490.16 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 167 matching records (CSV)

CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.

Showing records 1–50 of 167.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Salix Pharmaceuticals, a division of Bausch Health US, LLC $13.2212/19/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026684938289 CMS
Amarin Pharma Inc. $5.9012/18/2019 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026699288497 CMS
PFIZER INC. $5.2912/17/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673697387 CMS
Amgen Inc. $16.5012/16/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026662310875 CMS
Amarin Pharma Inc. $5.9012/11/2019 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026699275507 CMS
Merck Sharp & Dohme Corporation $15.6311/27/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026695906077 CMS
Amarin Pharma Inc. $5.9011/26/2019 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026699267305 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $18.9211/25/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026700131731 CMS
Teva Pharmaceuticals USA, Inc. $24.3611/21/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026697748101 CMS
Indivior Inc. $17.2111/20/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705791347 CMS
Allergan Inc. $12.8111/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026671140737 CMS
PFIZER INC. $21.9111/13/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673163153 CMS
Novo Nordisk Inc $14.0511/12/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026674663319 CMS
Amgen Inc. $14.2311/11/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026662310873 CMS
PFIZER INC. $16.7611/05/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673720309 CMS
AstraZeneca Pharmaceuticals LP $15.5811/04/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026685755287 CMS
Takeda Pharmaceuticals U.S.A., Inc. $3.3310/31/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026682042273 CMS
Allergan Inc. $4.6010/29/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026671140735 CMS
PFIZER INC. $13.5010/29/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673685631 CMS
Amarin Pharma Inc. $5.9010/25/2019 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026699247791 CMS
Teva Pharmaceuticals USA, Inc. $23.5410/24/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026697739077 CMS
Indivior Inc. $16.3610/23/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705791345 CMS
Takeda Pharmaceuticals U.S.A., Inc. $2.0010/17/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026681798233 CMS
Merck Sharp & Dohme Corporation $14.0310/16/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026695872833 CMS
US WorldMeds, LLC $15.1010/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026699503351 CMS
Amarin Pharma Inc. $5.9010/14/2019 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026699234547 CMS
Amgen Inc. $16.1610/09/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026662310871 CMS
PFIZER INC. $21.4210/08/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026672906180 CMS
PFIZER INC. $8.0710/03/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673141601 CMS
AstraZeneca Pharmaceuticals LP $18.1309/27/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026685762401 CMS
Teva Pharmaceuticals USA, Inc. $28.5309/27/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026697779231 CMS
Allergan Inc. $21.0709/26/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026671140731 CMS
Amarin Pharma Inc. $5.9009/26/2019 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026699221231 CMS
AstraZeneca Pharmaceuticals LP $21.0009/25/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026685446905 CMS
Merck Sharp & Dohme Corporation $15.6909/23/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026695759829 CMS
Amarin Pharma Inc. $5.9009/18/2019 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026699223501 CMS
PFIZER INC. $34.9309/18/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026672916479 CMS
AstraZeneca Pharmaceuticals LP $23.4509/12/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026685628829 CMS
Allergan Inc. $6.1209/11/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026671140729 CMS
Amgen Inc. $10.5209/11/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026662310869 CMS
US WorldMeds, LLC $18.2109/10/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026699503335 CMS
PFIZER INC. $13.8609/05/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026672844367 CMS
Bausch Health US, LLC $15.7109/04/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026684534335 CMS
Indivior Inc. $21.9408/22/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705791343 CMS
Novartis Pharmaceuticals Corporation $18.9508/21/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026660018715 CMS
PFIZER INC. $18.9908/16/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026672495691 CMS
PFIZER INC. $22.5808/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026672493051 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $16.9608/14/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026700131719 CMS
US WorldMeds, LLC $16.8108/13/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026699503337 CMS
Amgen Inc. $10.1508/09/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026662310867 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $2,490.16 167
PY2020 $3,055.40 174
PY2021 $3,984.64 218
PY2022 $3,250.22 171
PY2023 $2,930.82 140
PY2024 $675.39 26
PY2025 $98.01 4

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 and profile matching
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.

Cite this record.

Plain
DONALD Y SIAO, NPI 1861415374. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1861415374.
APA 7
IndustryPayments. (2026). DONALD Y SIAO, NPI 1861415374 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1861415374
Bluebook
DONALD Y SIAO, NPI 1861415374, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1861415374.

Source: Centers for Medicare & Medicaid Services, Open Payments.