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

Reflects CMS Open Payments as of 2026-07-26T04:22:22Z. 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 ↗

Covered recipient · General Payments record

OSCAR L CHIEN

Allopathic & Osteopathic Physicians Internal Medicine Geriatric Medicine

NPI
1679675904
CMS profile
348067
Location
SAN GABRIEL, 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.

General Payments · PY2019–2025

  • CMS publication 2026-06-30

Latest program year · PY2025

$13,873.54

126 records · 0 disputed

“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.
  • Featured-page threshold (a presentation gate, not a judgment): (records>=3 OR total>=100) AND records>=2 AND NPI identity (all years).
  • Methodology & Data — sourcing, labeling, and limitations.

By nature of payment

PY2025 · sorted by reported total

Nature of paymentAmountRecords
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program $6,730.00 5
Food and Beverage $4,315.33 115
Travel and Lodging $1,544.86 3
Consulting Fee $1,250.00 1
Education $33.35 2

By paying entity

PY2025 · sorted by reported total

Paying entityAmountRecords
Sumitomo Pharma America, Inc. $5,015.79 12
ABBVIE INC. $2,449.07 12
VIVUS LLC $1,440.36 5
Phathom Pharmaceuticals, Inc. $1,327.64 5
Acerta Pharma LLC $647.81 17
Bayer HealthCare Pharmaceuticals Inc. $350.45 12
Teva Pharmaceuticals USA, Inc. $302.70 5
Novo Nordisk AS $295.55 5
Amgen Inc. $227.38 13
Otsuka America Pharmaceutical, Inc. $223.94 6
GlaxoSmithKline, LLC. $174.22 3
Madrigal Pharmaceuticals $150.00 1
Viatris Specialty LLC $135.02 8
NOVARTIS PHARMACEUTICALS CORPORATION $125.08 5
EISAI INC. $125.00 1
AIMMUNE THERAPEUTICS, INC. $124.99 1
PFIZER INC. $124.98 1
KYOWA KIRIN, INC. $121.83 1
Gilead Sciences, Inc. $121.81 1
Salix Pharmaceuticals, a division of Bausch Health US, LLC $120.63 1
Radius Health, Inc. $61.67 2
Boehringer Ingelheim Pharmaceuticals, Inc. $52.53 2
IRONWOOD PHARMACEUTICALS, INC $26.69 1
Lundbeck LLC $23.02 1
Almatica Pharma LLC $22.77 1
Esperion Therapeutics, Inc. $22.57 1
Kowa Pharmaceuticals America, Inc. $20.45 1
Verona Pharma, Inc. $20.31 1
Exact Sciences Corporation $19.28 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $76,106.27 315
PY2020 $26,735.81 156
PY2021 $23,539.47 196
PY2022 $21,155.63 157
PY2023 $19,348.75 152
PY2024 $27,480.08 151
PY2025 $13,873.54 126

Payment records · PY2025 (126)

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

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
ABBVIE INC. $1,125.00 12/22/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1201650736 CMS
Bayer Healthcare Pharmaceuticals Inc. $9.79 12/19/2025 Food and Beverage No dispute reported 06/30/2026 1225494591 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $32.74 12/19/2025 Food and Beverage No dispute reported 06/30/2026 1222751272 CMS
ABBVIE INC. $1,125.00 12/17/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1201650734 CMS
Sumitomo Pharma America, Inc. $12.02 12/17/2025 Food and Beverage No dispute reported 06/30/2026 1176623234 CMS
ABBVIE INC. $13.00 12/16/2025 Food and Beverage No dispute reported 06/30/2026 1201650732 CMS
Lundbeck LLC $23.02 12/16/2025 Food and Beverage No dispute reported 06/30/2026 1251783898 CMS
VIVUS LLC $29.86 12/15/2025 Food and Beverage No dispute reported 06/30/2026 1188050811 CMS
ABBVIE INC. $18.81 12/12/2025 Food and Beverage No dispute reported 06/30/2026 1201650730 CMS
Novartis Pharmaceuticals Corporation $27.80 12/08/2025 Food and Beverage No dispute reported 06/30/2026 1200063272 CMS
Viatris Specialty LLC $21.37 12/05/2025 Food and Beverage No dispute reported 06/30/2026 1238479675 CMS
AstraZeneca Pharmaceuticals LP $30.99 12/03/2025 Food and Beverage No dispute reported 06/30/2026 1206666383 CMS
Bayer Healthcare Pharmaceuticals Inc. $140.00 12/03/2025 Food and Beverage No dispute reported 06/30/2026 1225494593 CMS
Sumitomo Pharma America, Inc. $7.09 12/02/2025 Food and Beverage No dispute reported 06/30/2026 1176623230 CMS
Bayer Healthcare Pharmaceuticals Inc. $24.47 12/01/2025 Food and Beverage No dispute reported 06/30/2026 1225494589 CMS
Bayer Healthcare Pharmaceuticals Inc. $14.00 11/26/2025 Food and Beverage No dispute reported 06/30/2026 1225494587 CMS
ABBVIE INC. $31.47 11/06/2025 Food and Beverage No dispute reported 06/30/2026 1201650728 CMS
Sumitomo Pharma America, Inc. $22.89 11/05/2025 Food and Beverage No dispute reported 06/30/2026 1176623226 CMS
Sumitomo Pharma America, Inc. $2,310.00 11/03/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1176623222 CMS
Bayer Healthcare Pharmaceuticals Inc. $5.93 10/31/2025 Food and Beverage No dispute reported 06/30/2026 1225494583 CMS
Novo Nordisk Inc $125.00 10/30/2025 Food and Beverage No dispute reported 06/30/2026 1188635166 CMS
Sumitomo Pharma America, Inc. $24.22 10/29/2025 Food and Beverage No dispute reported 06/30/2026 1176623218 CMS
Sumitomo Pharma America, Inc. $722.77 10/25/2025 Travel and Lodging No dispute reported 06/30/2026 1176623214 CMS
Sumitomo Pharma America, Inc. $263.47 10/24/2025 Travel and Lodging No dispute reported 06/30/2026 1176623205 CMS
Sumitomo Pharma America, Inc. $558.62 10/24/2025 Travel and Lodging No dispute reported 06/30/2026 1176623210 CMS
AstraZeneca Pharmaceuticals LP $23.24 10/21/2025 Food and Beverage No dispute reported 06/30/2026 1206391322 CMS
Otsuka America Pharmaceutical, Inc. $13.89 10/20/2025 Food and Beverage No dispute reported 06/30/2026 1227308375 CMS
Bayer Healthcare Pharmaceuticals Inc. $7.30 10/17/2025 Food and Beverage No dispute reported 06/30/2026 1225494585 CMS
ABBVIE INC. $25.27 10/15/2025 Food and Beverage No dispute reported 06/30/2026 1201650726 CMS
Amgen Inc. $125.00 10/14/2025 Food and Beverage No dispute reported 06/30/2026 1228315389 CMS
Radius Health, Inc. $28.67 10/14/2025 Food and Beverage No dispute reported 06/30/2026 1249519596 CMS
Amgen Inc. $8.39 10/08/2025 Food and Beverage No dispute reported 06/30/2026 1227189052 CMS
Viatris Specialty LLC $17.91 10/07/2025 Food and Beverage No dispute reported 06/30/2026 1238465451 CMS
Bayer Healthcare Pharmaceuticals Inc. $23.65 10/06/2025 Food and Beverage No dispute reported 06/30/2026 1225494581 CMS
Otsuka America Pharmaceutical, Inc. $20.67 10/06/2025 Food and Beverage No dispute reported 06/30/2026 1227308373 CMS
Amgen Inc. $8.05 10/01/2025 Food and Beverage No dispute reported 06/30/2026 1227189050 CMS
PFIZER INC. $124.98 10/01/2025 Food and Beverage No dispute reported 06/30/2026 1230165219 CMS
Madrigal Pharmaceuticals $150.00 09/23/2025 Food and Beverage No dispute reported 06/30/2026 1248247178 CMS
Novartis Pharmaceuticals Corporation $31.65 09/22/2025 Food and Beverage No dispute reported 06/30/2026 1200106056 CMS
GlaxoSmithKline, LLC. $124.03 09/16/2025 Food and Beverage No dispute reported 06/30/2026 1191337158 CMS
Viatris Specialty LLC $20.17 09/16/2025 Food and Beverage No dispute reported 06/30/2026 1238464085 CMS
Novo Nordisk Inc $22.61 09/15/2025 Food and Beverage No dispute reported 06/30/2026 1188608044 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $120.63 09/10/2025 Food and Beverage No dispute reported 06/30/2026 1231977840 CMS
Sumitomo Pharma America, Inc. $10.23 09/08/2025 Food and Beverage No dispute reported 06/30/2026 1176623202 CMS
Teva Pharmaceuticals USA, Inc. $125.00 09/04/2025 Food and Beverage No dispute reported 06/30/2026 1247257113 CMS
AstraZeneca Pharmaceuticals LP $23.03 08/25/2025 Food and Beverage No dispute reported 06/30/2026 1207031243 CMS
VIVUS LLC $12.11 08/19/2025 Food and Beverage No dispute reported 06/30/2026 1188050809 CMS
AstraZeneca Pharmaceuticals LP $29.71 08/18/2025 Food and Beverage No dispute reported 06/30/2026 1206579962 CMS
Amgen Inc. $6.67 08/08/2025 Food and Beverage No dispute reported 06/30/2026 1227189042 CMS
Kowa Pharmaceuticals America, Inc. $20.45 08/08/2025 Food and Beverage No dispute reported 06/30/2026 1243080684 CMS
Novo Nordisk Inc $14.15 08/08/2025 Food and Beverage No dispute reported 06/30/2026 1188672322 CMS
Aimmune Therapeutics, Inc. $124.99 08/07/2025 Food and Beverage No dispute reported 06/30/2026 1249641965 CMS
VIVUS LLC $1,250.00 08/07/2025 Consulting Fee No dispute reported 06/30/2026 1188050807 CMS
ABBVIE INC. $19.17 08/05/2025 Food and Beverage No dispute reported 06/30/2026 1201650724 CMS
GlaxoSmithKline, LLC. $21.69 08/04/2025 Food and Beverage No dispute reported 06/30/2026 1190479552 CMS
Bayer Healthcare Pharmaceuticals Inc. $29.55 08/01/2025 Food and Beverage No dispute reported 06/30/2026 1225494579 CMS
Amgen Inc. $8.45 07/25/2025 Food and Beverage No dispute reported 06/30/2026 1227189036 CMS
VIVUS LLC $125.00 07/24/2025 Food and Beverage No dispute reported 06/30/2026 1188050805 CMS
Phathom Pharmaceuticals, Inc. $26.45 07/22/2025 Food and Beverage No dispute reported 06/30/2026 1219265974 CMS
AstraZeneca Pharmaceuticals LP $22.86 07/21/2025 Food and Beverage No dispute reported 06/30/2026 1206273570 CMS
Bayer Healthcare Pharmaceuticals Inc. $21.39 07/15/2025 Food and Beverage No dispute reported 06/30/2026 1225494577 CMS
Amgen Inc. $8.33 07/11/2025 Food and Beverage No dispute reported 06/30/2026 1227189056 CMS
VIVUS LLC $23.39 06/27/2025 Food and Beverage No dispute reported 06/30/2026 1188050803 CMS
Amgen Inc. $4.58 06/25/2025 Food and Beverage No dispute reported 06/30/2026 1227189054 CMS
AstraZeneca Pharmaceuticals LP $24.72 06/25/2025 Food and Beverage No dispute reported 06/30/2026 1206848919 CMS
Viatris Specialty LLC $16.45 06/17/2025 Food and Beverage No dispute reported 06/30/2026 1238506531 CMS
GlaxoSmithKline, LLC. $28.50 06/16/2025 Education No dispute reported 06/30/2026 1191207289 CMS
AstraZeneca Pharmaceuticals LP $19.02 06/13/2025 Food and Beverage No dispute reported 06/30/2026 1206600030 CMS
Novo Nordisk Inc $124.41 06/12/2025 Food and Beverage No dispute reported 06/30/2026 1188245945 CMS
ABBVIE INC. $23.46 06/11/2025 Food and Beverage No dispute reported 06/30/2026 1201650722 CMS
Sumitomo Pharma America, Inc. $1,050.00 06/03/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1176623197 CMS
Novo Nordisk Inc $9.38 05/29/2025 Food and Beverage No dispute reported 06/30/2026 1188968807 CMS
Amgen Inc. $10.43 05/28/2025 Food and Beverage No dispute reported 06/30/2026 1227189046 CMS
AstraZeneca Pharmaceuticals LP $29.04 05/21/2025 Food and Beverage No dispute reported 06/30/2026 1207200702 CMS
Viatris Specialty LLC $15.54 05/19/2025 Food and Beverage No dispute reported 06/30/2026 1238504393 CMS
Phathom Pharmaceuticals, Inc. $1,120.00 05/14/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported 06/30/2026 1219265972 CMS
KYOWA KIRIN, INC. $121.83 05/13/2025 Food and Beverage No dispute reported 06/30/2026 1222077944 CMS
Phathom Pharmaceuticals, Inc. $140.00 05/07/2025 Food and Beverage No dispute reported 06/30/2026 1219265970 CMS
Viatris Specialty LLC $9.20 05/02/2025 Food and Beverage No dispute reported 06/30/2026 1238481121 CMS
AstraZeneca Pharmaceuticals LP $20.05 04/30/2025 Food and Beverage No dispute reported 06/30/2026 1206276314 CMS
Bayer Healthcare Pharmaceuticals Inc. $26.34 04/29/2025 Food and Beverage No dispute reported 06/30/2026 1225494573 CMS
Otsuka America Pharmaceutical, Inc. $125.00 04/29/2025 Food and Beverage No dispute reported 06/30/2026 1227308371 CMS
Radius Health, Inc. $33.00 04/25/2025 Food and Beverage No dispute reported 06/30/2026 1249519594 CMS
Otsuka America Pharmaceutical, Inc. $22.74 04/22/2025 Food and Beverage No dispute reported 06/30/2026 1227308369 CMS
Eisai Inc. $125.00 04/14/2025 Food and Beverage No dispute reported 06/30/2026 1244503554 CMS
Otsuka America Pharmaceutical, Inc. $18.17 04/14/2025 Food and Beverage No dispute reported 06/30/2026 1227308367 CMS
Viatris Specialty LLC $16.28 04/11/2025 Food and Beverage No dispute reported 06/30/2026 1238481495 CMS
ABBVIE INC. $6.62 04/08/2025 Food and Beverage No dispute reported 06/30/2026 1201650720 CMS
Esperion Therapeutics, Inc. $22.57 04/07/2025 Food and Beverage No dispute reported 06/30/2026 1243955050 CMS
AstraZeneca Pharmaceuticals LP $22.46 04/04/2025 Food and Beverage No dispute reported 06/30/2026 1206287106 CMS
Gilead Sciences, Inc. $121.81 04/01/2025 Food and Beverage No dispute reported 06/30/2026 1234389164 CMS
Phathom Pharmaceuticals, Inc. $21.76 04/01/2025 Food and Beverage No dispute reported 06/30/2026 1219362914 CMS
Teva Pharmaceuticals USA, Inc. $23.56 03/31/2025 Food and Beverage No dispute reported 06/30/2026 1247257033 CMS
Amgen Inc. $6.14 03/27/2025 Food and Beverage No dispute reported 06/30/2026 1227189040 CMS
Verona Pharma, Inc. $20.31 03/25/2025 Food and Beverage No dispute reported 06/30/2026 1233816413 CMS
ABBVIE INC. $27.58 03/22/2025 Food and Beverage No dispute reported 06/30/2026 1201650718 CMS
AstraZeneca Pharmaceuticals LP $23.30 03/19/2025 Food and Beverage No dispute reported 06/30/2026 1206607687 CMS
ABBVIE INC. $9.42 03/18/2025 Food and Beverage No dispute reported 06/30/2026 1201650716 CMS
Bayer Healthcare Pharmaceuticals Inc. $26.19 03/18/2025 Food and Beverage No dispute reported 06/30/2026 1225494571 CMS
Novartis Pharmaceuticals Corporation $25.94 03/18/2025 Food and Beverage No dispute reported 06/30/2026 1200106054 CMS
AstraZeneca Pharmaceuticals LP $121.83 03/04/2025 Food and Beverage No dispute reported 06/30/2026 1206152433 CMS
AstraZeneca Pharmaceuticals LP $125.00 02/26/2025 Food and Beverage No dispute reported 06/30/2026 1206573518 CMS
Sumitomo Pharma America, Inc. $29.63 02/26/2025 Food and Beverage No dispute reported 06/30/2026 1176623193 CMS
Amgen Inc. $7.85 02/20/2025 Food and Beverage No dispute reported 06/30/2026 1227189048 CMS
Teva Pharmaceuticals USA, Inc. $23.72 02/19/2025 Food and Beverage No dispute reported 06/30/2026 1247256997 CMS
Viatris Specialty LLC $18.10 02/18/2025 Food and Beverage No dispute reported 06/30/2026 1238495119 CMS
Otsuka America Pharmaceutical, Inc. $23.47 02/12/2025 Food and Beverage No dispute reported 06/30/2026 1227308365 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $19.79 02/11/2025 Food and Beverage No dispute reported 06/30/2026 1222751270 CMS
Teva Pharmaceuticals USA, Inc. $121.83 02/11/2025 Food and Beverage No dispute reported 06/30/2026 1247257001 CMS
Amgen Inc. $17.67 02/10/2025 Food and Beverage No dispute reported 06/30/2026 1228315391 CMS
Bayer Healthcare Pharmaceuticals Inc. $21.84 02/07/2025 Food and Beverage No dispute reported 06/30/2026 1225494575 CMS
Sumitomo Pharma America, Inc. $4.85 02/06/2025 Education No dispute reported 06/30/2026 1176623188 CMS
Phathom Pharmaceuticals, Inc. $19.43 02/04/2025 Food and Beverage No dispute reported 06/30/2026 1219362844 CMS
Amgen Inc. $8.79 02/03/2025 Food and Beverage No dispute reported 06/30/2026 1227189044 CMS
AstraZeneca Pharmaceuticals LP $20.00 02/03/2025 Food and Beverage No dispute reported 06/30/2026 1206636980 CMS
AstraZeneca Pharmaceuticals LP $70.39 01/29/2025 Food and Beverage No dispute reported 06/30/2026 1206849343 CMS
Novartis Pharmaceuticals Corporation $24.80 01/28/2025 Food and Beverage No dispute reported 06/30/2026 1200106052 CMS
Teva Pharmaceuticals USA, Inc. $8.59 01/28/2025 Food and Beverage No dispute reported 06/30/2026 1247256995 CMS
AstraZeneca Pharmaceuticals LP $17.57 01/22/2025 Food and Beverage No dispute reported 06/30/2026 1206882926 CMS
Exact Sciences Corporation $19.28 01/21/2025 Food and Beverage No dispute reported 06/30/2026 1235643035 CMS
AstraZeneca Pharmaceuticals LP $24.60 01/17/2025 Food and Beverage No dispute reported 06/30/2026 1207312868 CMS
IRONWOOD PHARMACEUTICALS, INC $26.69 01/15/2025 Food and Beverage No dispute reported 06/30/2026 1227655770 CMS
Amgen Inc. $7.03 01/10/2025 Food and Beverage No dispute reported 06/30/2026 1227189038 CMS
Novartis Pharmaceuticals Corporation $14.89 01/10/2025 Food and Beverage No dispute reported 06/30/2026 1200106050 CMS
ABBVIE INC. $24.27 01/08/2025 Food and Beverage No dispute reported 06/30/2026 1201650714 CMS
Almatica Pharma LLC $22.77 01/06/2025 Food and Beverage No dispute reported 06/30/2026 1209930630 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

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.

Permalink https://industrypayments.org/provider/npi-1679675904

Plain
OSCAR L CHIEN, NPI 1679675904. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1679675904.
APA 7
IndustryPayments. (2026). OSCAR L CHIEN, NPI 1679675904 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1679675904
Bluebook
OSCAR L CHIEN, NPI 1679675904, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1679675904.

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