Covered recipient · General Payments record

WALAILUK CHAIYARAT

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI: 1811140478
CMS profile: 354879
Location: CONCORD, 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 · PY2023 · Entire year

$4,257.96

187 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 July 26, 2026. 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

PY2023 · entire year · sorted by reported total

Nature of payment	Amount	Records
Food and Beverage	$4,249.80	186
Education	$8.16	1

By paying entity

PY2023 · entire year · sorted by reported total

Paying entity	Amount	Records
Merck Sharp & Dohme LLC	$401.86	15
GlaxoSmithKline, LLC.	$280.60	11
Celgene Corporation	$266.79	16
Genentech USA, Inc.	$263.03	13
Novartis Pharmaceuticals Corporation	$256.48	9
E.R. Squibb & Sons, L.L.C.	$244.35	19
PFIZER INC.	$227.91	14
Lilly USA, LLC	$206.47	8
Myriad Genetic Laboratories, Inc.	$205.40	2
GENZYME CORPORATION	$179.57	6
Seagen Inc.	$144.71	6
Pharmacyclics LLC, An AbbVie Company	$129.43	7
Eisai Inc.	$112.08	5
Janssen Biotech, Inc.	$102.82	4
AbbVie Inc.	$102.34	4
Regeneron Healthcare Solutions, Inc.	$86.72	3
TAIHO ONCOLOGY, INC.	$85.06	4
Exelixis Inc.	$77.42	2
Amgen Inc.	$75.13	4
Mirati Therapeutics, Inc.	$69.72	3
Incyte Corporation	$64.52	3
AstraZeneca Pharmaceuticals LP	$63.86	3
ARRAY BIOPHARMA INC	$62.80	2
Stemline Therapeutics Inc.	$55.95	2
Daiichi Sankyo Inc.	$52.64	2
SOBI, INC	$51.96	2
AVEO Pharmaceuticals, Inc.	$49.63	2
Janssen Pharmaceuticals, Inc	$41.55	2
SERVIER PHARMACEUTICALS LLC	$40.84	2
Gilead Sciences, Inc.	$40.60	2
Takeda Pharmaceuticals U.S.A., Inc.	$40.10	2
G1 Therapeutics, Inc.	$39.75	2
Astellas Pharma US Inc	$34.17	1
CTI BioPharma Corp.	$29.97	1
Foundation Medicine, Inc.	$25.35	1
Kite Pharma, Inc.	$20.12	1
BeiGene USA, Inc.	$16.94	1
Emmaus Medical, Inc.	$9.32	1

Page 2 of 4; records 51–100 of 187 matching records. This page contains 50 records (maximum 50), not the full filtered export. Use the CSV download for all matching records.

IndustryPayments · General Payments

WALAILUK CHAIYARAT

NPI 1811140478 · CMS profile ID 354879

Allopathic & Osteopathic Physicians / Internal Medicine / Hematology & Oncology

CONCORD, CA

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.

General Payments, PY2023; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types

Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00

Page 2 of 4; records 51–100 of 187 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1811140478?year=2023&recipient=provider&page=2#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9

Cite these filtered records

The citation includes this program year, filters, data edition, and page of results.

Plain: WALAILUK CHAIYARAT, NPI 1811140478, CMS profile ID 354879. General Payments, PY2023; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 2 of 4; records 51–100 of 187 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1811140478?year=2023&recipient=provider&page=2#records-h. Source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9.
APA 7: IndustryPayments. (2026). WALAILUK CHAIYARAT, NPI 1811140478, CMS profile ID 354879. General Payments, PY2023; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 2 of 4; records 51–100 of 187 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1811140478?year=2023&recipient=provider&page=2#records-h. Source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9.
Bluebook: WALAILUK CHAIYARAT, NPI 1811140478, CMS profile ID 354879, IndustryPayments, General Payments, PY2023; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types (Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00). Page 2 of 4; records 51–100 of 187 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/fb3a65aa-c901-4a38-a813-b04b00dfa2a9. https://industrypayments.org/provider/npi-1811140478?year=2023&recipient=provider&page=2#records-h.

Centers for Medicare & Medicaid Services, Open Payments

Citation formats are provided for reference; check the requirements of your publication.

General Payments only. Research Payments and Ownership/Investment Interests are separate datasets and are not included.

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

Centers for Medicare & Medicaid Services, Open Payments

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.

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.

IndustryPayments.org is not a consumer reporting agency as defined by the Fair Credit Reporting Act. Do not use this site to determine any person's eligibility for employment, credentialing, insurance, credit, housing, or any other purpose covered by the FCRA.

Methodology: https://industrypayments.org/methodology

Payment records · PY2023

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

Reporting company Nature of payment

General Payments · PY2023 · Physicians and non-physician practitioners · CMS publication 2026-06-30

187 matching records · $4,257.96 reported total · 0 disputed

Nature of payment: All payment types

Records imported here November 5, 2026 (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 187 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 51–100 of 187.

Paying entity	Amount	Date	Nature of payment	Dispute status	Publication flags	Published	Record ID	Source
Merck Sharp & Dohme LLC	$28.54	09/07/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1048684347	CMS
PFIZER INC.	$27.16	09/06/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1050160701	CMS
Celgene Corporation	$23.83	09/05/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1015683335	CMS
Celgene Corporation	$0.51	09/05/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1015683339	CMS
AstraZeneca Pharmaceuticals LP	$21.94	09/01/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1014279509	CMS
Lilly USA, LLC	$29.89	08/30/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1032608511	CMS
Novartis Pharmaceuticals Corporation	$23.45	08/29/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	991617853	CMS
Merck Sharp & Dohme LLC	$28.37	08/28/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1048844353	CMS
Merck Sharp & Dohme LLC	$32.66	08/25/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1048840571	CMS
E.R. Squibb & Sons, L.L.C.	$0.54	08/23/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1015683345	CMS
E.R. Squibb & Sons, L.L.C.	$18.33	08/23/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1015683349	CMS
Janssen Biotech, Inc.	$23.80	08/19/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	988660413	CMS
SOBI, INC	$25.59	08/17/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1038117049	CMS
Merck Sharp & Dohme LLC	$28.24	08/16/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1048684321	CMS
Celgene Corporation	$20.48	08/15/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1015683317	CMS
Celgene Corporation	$0.61	08/15/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1015683321	CMS
Daiichi Sankyo Inc.	$29.39	08/14/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1006468847	CMS
PFIZER INC.	$18.13	08/11/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1050047615	CMS
TAIHO ONCOLOGY, INC.	$24.98	08/11/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1055226937	CMS
Exelixis Inc.	$42.48	08/10/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1044588675	CMS
Janssen Pharmaceuticals, Inc	$19.81	08/08/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	988570625	CMS
Lilly USA, LLC	$26.84	08/05/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1032649033	CMS
Merck Sharp & Dohme LLC	$22.69	08/03/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1048684355	CMS
GlaxoSmithKline, LLC.	$31.92	08/02/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1003320073	CMS
PFIZER INC.	$16.26	08/01/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1050317225	CMS
Pharmacyclics LLC, An AbbVie Company	$6.41	08/01/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	998283193	CMS
Foundation Medicine, Inc.	$25.35	07/31/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1058795177	CMS
Incyte Corporation	$19.56	07/31/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1044521475	CMS
Seagen Inc.	$21.09	07/28/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	995653761	CMS
Novartis Pharmaceuticals Corporation	$34.46	07/27/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	991617849	CMS
Janssen Biotech, Inc.	$23.32	07/25/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	988660409	CMS
Gilead Sciences, Inc.	$21.26	07/24/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1025771251	CMS
AbbVie Inc.	$21.03	07/21/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	996381769	CMS
E.R. Squibb & Sons, L.L.C.	$12.74	07/21/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1015683297	CMS
Novartis Pharmaceuticals Corporation	$25.28	07/19/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	991617841	CMS
CTI BioPharma Corp.	$29.97	07/18/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1039697585	CMS
PFIZER INC.	$14.41	07/14/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1049784343	CMS
Merck Sharp & Dohme LLC	$25.02	07/12/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1048684369	CMS
Pharmacyclics LLC, An AbbVie Company	$18.03	07/12/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	998283191	CMS
Stemline Therapeutics Inc.	$21.74	07/12/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1040041807	CMS
E.R. Squibb & Sons, L.L.C.	$20.23	07/11/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1015683293	CMS
E.R. Squibb & Sons, L.L.C.	$23.17	07/07/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1015683311	CMS
Genentech USA, Inc.	$33.09	06/30/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1040594549	CMS
Merck Sharp & Dohme LLC	$31.42	06/29/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1048684325	CMS
Eisai Inc.	$24.48	06/28/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1023336913	CMS
Genentech USA, Inc.	$25.77	06/28/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1040594533	CMS
Genentech USA, Inc.	$0.43	06/28/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1040594541	CMS
G1 Therapeutics, Inc.	$17.32	06/23/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1059917397	CMS
E.R. Squibb & Sons, L.L.C.	$27.55	06/22/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1015683269	CMS
GlaxoSmithKline, LLC.	$26.54	06/21/2023	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	1003319403	CMS

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2019	$2,850.74	142
PY2020	$890.72	53
PY2021	$357.21	22
PY2022	$2,268.28	104
PY2023	$4,257.96	187
PY2024	$2,569.18	110
PY2025	$3,729.71	133

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

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.