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 · PY2022 · Entire year

$3,250.22

171 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

PY2022 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $3,192.29 167
Education $57.93 4

By paying entity

PY2022 · entire year · sorted by reported total

Payment records · PY2022

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

General Payments · PY2022 · Physicians and non-physician practitioners · CMS publication 2026-06-30

171 matching records · $3,250.22 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 171 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 171.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
AstraZeneca Pharmaceuticals LP $12.6412/22/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026915320497 CMS
Novo Nordisk Inc $19.5012/20/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026898705675 CMS
Collegium Pharmaceutical, Inc. $25.0012/16/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026914563855 CMS
Amgen Inc. $24.8812/14/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026939910115 CMS
Bayer HealthCare Pharmaceuticals Inc. $24.2912/12/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026930297765 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $14.9912/08/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026887459785 CMS
CMP Pharma, Inc. $18.7512/07/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026932178063 CMS
Novo Nordisk Inc $4.7911/30/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026898705647 CMS
Lilly USA, LLC $19.7711/29/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026917997257 CMS
Collegium Pharmaceutical, Inc. $22.7311/28/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026914563853 CMS
IBSA Pharma Inc. $22.2411/28/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026890046105 CMS
Amgen Inc. $12.5011/21/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026939910113 CMS
Biohaven Pharmaceutical Holding Company Ltd. $24.2811/18/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026923734571 CMS
Amgen Inc. $124.9911/17/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026939365457 CMS
Amgen Inc. $24.7311/16/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026939910111 CMS
Biohaven Pharmaceutical Holding Company Ltd. $16.3911/16/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026923734569 CMS
ABBVIE INC. $4.9211/11/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026891599391 CMS
Astellas Pharma US Inc $16.3911/11/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026940319651 CMS
AstraZeneca Pharmaceuticals LP $20.8411/09/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026915519697 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $10.0111/09/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026959456151 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $3.4311/09/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026959907391 CMS
GlaxoSmithKline, LLC. $28.2911/08/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026944763027 CMS
Amgen Inc. $27.9311/07/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026939365455 CMS
Collegium Pharmaceutical, Inc. $20.4511/03/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026914563849 CMS
AstraZeneca Pharmaceuticals LP $23.6711/02/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026914900355 CMS
Biohaven Pharmaceutical Holding Company Ltd. $19.2810/28/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026923734567 CMS
ABBVIE INC. $17.0710/22/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026891599389 CMS
CMP Pharma, Inc. $19.8110/20/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026932178059 CMS
Novo Nordisk Inc $5.1910/20/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026899186117 CMS
Bayer HealthCare Pharmaceuticals Inc. $33.3310/17/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026929976311 CMS
IBSA Pharma Inc. $16.0510/17/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026890046101 CMS
Avanir Pharmaceuticals, Inc. $25.9210/14/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026935994049 CMS
Collegium Pharmaceutical, Inc. $15.9110/14/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026914563847 CMS
Amgen Inc. $25.0010/12/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026939910109 CMS
Biohaven Pharmaceutical Holding Company Ltd. $2.4510/07/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026923734565 CMS
Hikma Pharmaceuticals USA $18.3710/05/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026927075607 CMS
AstraZeneca Pharmaceuticals LP $21.6710/01/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026915887353 CMS
Amgen Inc. $14.5809/30/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026939910107 CMS
Novo Nordisk Inc $6.0109/29/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026898705657 CMS
AstraZeneca Pharmaceuticals LP $16.8409/28/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026914857395 CMS
GlaxoSmithKline, LLC. $6.6509/27/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026944763035 CMS
RedHill Biopharma Inc. $15.2709/24/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026902963603 CMS
IBSA Pharma Inc. $94.1609/22/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026890046097 CMS
CMP Pharma, Inc. $5.4509/21/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026932178055 CMS
Dexcom, Inc. $28.6309/21/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026957323399 CMS
Avanir Pharmaceuticals, Inc. $24.7709/19/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026935986327 CMS
Collegium Pharmaceutical, Inc. $22.7309/17/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026914543407 CMS
Lilly USA, LLC $10.6609/15/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026917978807 CMS
Hikma Pharmaceuticals USA $21.0009/13/2022 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026927075791 CMS
CMP Pharma, Inc. $9.1709/03/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026932178051 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.