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

MICHAEL CHAHIN

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI: 1245735661
CMS profile: 7222093
Location: SAVANNAH, GA

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 · PY2021–2025

CMS publication 2026-06-30

Latest program year · PY2025

$2,255.30

111 records · 0 disputed

Other CMS categories — not shown on this page

Research Payments

CMS also publishes Research Payments as a separate dataset. This site does not currently mirror it, and no research figure is shown on this page. This provider appears in that dataset.

“If you are a physician who served as a principal investigator on a research study, you may see the payments associated with that research study listed under your name. This does not necessarily mean the payments are attributed to you. The dollar amount of the record corresponds to the total payment; the amounts are not attributed to each individual on the record.”
— Centers for Medicare & Medicaid Services, Open Payments Frequently Asked Questions, FAQ #12224

These records are published by CMS and can be viewed on this provider’s official CMS record. View this provider on CMS Open Payments ↗

“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 payment	Amount	Records
Food and Beverage	$2,234.79	110
Education	$20.51	1

By paying entity

PY2025 · sorted by reported total

Paying entity	Amount	Records
Merck Sharp & Dohme Corporation	$241.35	11
E.R. Squibb & Sons, L.L.C.	$208.47	11
NOVARTIS PHARMACEUTICALS CORPORATION	$161.57	11
Celgene Corporation	$139.27	6
Daiichi Sankyo Inc.	$136.45	5
PFIZER INC.	$124.90	6
Acerta Pharma LLC	$113.48	6
Janssen Biotech, Inc.	$104.56	4
ABBVIE INC.	$88.46	5
Regeneron Healthcare Solutions, Inc.	$81.40	4
Takeda Pharmaceuticals U.S.A., Inc.	$78.48	3
GlaxoSmithKline, LLC.	$66.14	4
Rigel Pharmaceuticals, Inc.	$58.54	3
ARRAY BIOPHARMA INC	$57.01	3
BeOne Medicines USA, Inc.	$54.84	2
SOBI, INC	$53.14	3
Ipsen Biopharmaceuticals, Inc	$48.74	2
Genentech USA, Inc.	$47.24	2
Bayer HealthCare Pharmaceuticals Inc.	$43.32	2
Exelixis Inc.	$40.16	2
Boehringer Ingelheim Pharmaceuticals, Inc.	$26.97	1
Gilead Sciences, Inc.	$23.14	1
Janssen Pharmaceuticals, Inc	$20.51	1
TAIHO ONCOLOGY, INC.	$20.50	1
Stemline Therapeutics Inc.	$20.44	1
Geron Corporation	$20.41	1
Karyopharm Therapeutics Inc.	$19.73	1
EMD Serono, Inc.	$19.26	1
Kite Pharma, Inc.	$19.12	1
PharmaEssentia USA Corporation	$19.12	1
Lilly USA, LLC	$17.85	1
EISAI INC.	$17.39	1
RECORDATI_RARE_DISEASES_INC.	$16.54	1
Azurity Pharmaceuticals, Inc.	$15.86	1
ADC THERAPEUTICS AMERICA, INC.	$15.74	1
Acrotech Biopharma Inc.	$15.20	1

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2021	$335.38	3
PY2022	$699.43	6
PY2023	$1,025.88	15
PY2024	$1,392.47	51
PY2025	$2,255.30	111

Payment records · PY2025 (111)

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

Program year 2025 2021 2022 2023 2024 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
E.R. Squibb & Sons, L.L.C.	$18.38	12/10/2025	Food and Beverage	No dispute reported	06/30/2026	1184746554	CMS
ADC THERAPEUTICS AMERICA, INC.	$15.74	11/27/2025	Food and Beverage	No dispute reported	06/30/2026	1246114683	CMS
Merck Sharp & Dohme LLC	$26.34	11/21/2025	Food and Beverage	No dispute reported	06/30/2026	1238196840	CMS
Daiichi Sankyo Inc.	$28.54	11/19/2025	Food and Beverage	No dispute reported	06/30/2026	1197008119	CMS
Merck Sharp & Dohme LLC	$13.41	11/18/2025	Food and Beverage	No dispute reported	06/30/2026	1238011522	CMS
PFIZER INC.	$21.42	11/12/2025	Food and Beverage	No dispute reported	06/30/2026	1229823610	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$26.97	11/11/2025	Food and Beverage	No dispute reported	06/30/2026	1222831839	CMS
Regeneron Healthcare Solutions, Inc.	$22.09	11/07/2025	Food and Beverage	No dispute reported	06/30/2026	1212885826	CMS
ARRAY BIOPHARMA INC	$23.40	10/31/2025	Food and Beverage	No dispute reported	06/30/2026	1229530193	CMS
BeOne Medicines USA, Inc.	$26.39	10/29/2025	Food and Beverage	No dispute reported	06/30/2026	1202891174	CMS
Celgene Corporation	$31.98	10/22/2025	Food and Beverage	No dispute reported	06/30/2026	1184746540	CMS
Celgene Corporation	$7.73	10/22/2025	Food and Beverage	No dispute reported	06/30/2026	1184746542	CMS
PFIZER INC.	$21.41	10/10/2025	Food and Beverage	No dispute reported	06/30/2026	1229509916	CMS
Daiichi Sankyo Inc.	$28.09	10/01/2025	Food and Beverage	No dispute reported	06/30/2026	1197031641	CMS
E.R. Squibb & Sons, L.L.C.	$21.13	09/22/2025	Food and Beverage	No dispute reported	06/30/2026	1184746522	CMS
Daiichi Sankyo Inc.	$26.48	09/19/2025	Food and Beverage	No dispute reported	06/30/2026	1197092037	CMS
Janssen Biotech, Inc.	$35.14	09/18/2025	Food and Beverage	No dispute reported	06/30/2026	1175401705	CMS
EMD Serono, Inc.	$19.26	09/12/2025	Food and Beverage	No dispute reported	06/30/2026	1236870169	CMS
AstraZeneca Pharmaceuticals LP	$25.85	09/10/2025	Food and Beverage	No dispute reported	06/30/2026	1207187125	CMS
AstraZeneca Pharmaceuticals LP	$19.57	09/05/2025	Food and Beverage	No dispute reported	06/30/2026	1207000810	CMS
ABBVIE INC.	$15.45	08/31/2025	Food and Beverage	No dispute reported	06/30/2026	1201625384	CMS
ABBVIE INC.	$16.55	08/20/2025	Food and Beverage	No dispute reported	06/30/2026	1201625382	CMS
PharmaEssentia USA Corporation	$19.12	08/19/2025	Food and Beverage	No dispute reported	06/30/2026	1246833999	CMS
AstraZeneca Pharmaceuticals LP	$19.46	08/15/2025	Food and Beverage	No dispute reported	06/30/2026	1206469685	CMS
GlaxoSmithKline, LLC.	$14.66	08/12/2025	Food and Beverage	No dispute reported	06/30/2026	1191515690	CMS
Merck Sharp & Dohme LLC	$30.27	08/01/2025	Food and Beverage	No dispute reported	06/30/2026	1238156423	CMS
Janssen Pharmaceuticals, Inc	$20.51	07/30/2025	Education	No dispute reported	06/30/2026	1174390507	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$14.43	07/23/2025	Food and Beverage	No dispute reported	06/30/2026	1223815738	CMS
E.R. Squibb & Sons, L.L.C.	$25.13	07/22/2025	Food and Beverage	No dispute reported	06/30/2026	1184746518	CMS
GlaxoSmithKline, LLC.	$19.52	07/18/2025	Food and Beverage	No dispute reported	06/30/2026	1191029511	CMS
Bayer Healthcare Pharmaceuticals Inc.	$18.30	07/15/2025	Food and Beverage	No dispute reported	06/30/2026	1225490127	CMS
Novartis Pharmaceuticals Corporation	$17.23	07/11/2025	Food and Beverage	No dispute reported	06/30/2026	1200179572	CMS
ABBVIE INC.	$14.95	07/10/2025	Food and Beverage	No dispute reported	06/30/2026	1201625380	CMS
Janssen Biotech, Inc.	$29.94	07/08/2025	Food and Beverage	No dispute reported	06/30/2026	1175402638	CMS
Regeneron Healthcare Solutions, Inc.	$21.10	07/07/2025	Food and Beverage	No dispute reported	06/30/2026	1212885824	CMS
Novartis Pharmaceuticals Corporation	$19.89	07/02/2025	Food and Beverage	No dispute reported	06/30/2026	1200179570	CMS
E.R. Squibb & Sons, L.L.C.	$23.10	07/01/2025	Food and Beverage	No dispute reported	06/30/2026	1184746488	CMS
Azurity Pharmaceuticals, Inc.	$15.86	06/27/2025	Food and Beverage	No dispute reported	06/30/2026	1242669080	CMS
E.R. Squibb & Sons, L.L.C.	$12.55	06/26/2025	Food and Beverage	No dispute reported	06/30/2026	1184746498	CMS
Gilead Sciences, Inc.	$23.14	06/25/2025	Food and Beverage	No dispute reported	06/30/2026	1234492948	CMS
PFIZER INC.	$27.41	06/25/2025	Food and Beverage	No dispute reported	06/30/2026	1231687878	CMS
SOBI, INC	$16.77	06/13/2025	Food and Beverage	No dispute reported	06/30/2026	1240239776	CMS
ARRAY BIOPHARMA INC	$15.32	06/11/2025	Food and Beverage	No dispute reported	06/30/2026	1228906639	CMS
Rigel Pharmaceuticals, Inc.	$26.42	06/06/2025	Food and Beverage	No dispute reported	06/30/2026	1247374500	CMS
Novartis Pharmaceuticals Corporation	$13.27	06/05/2025	Food and Beverage	No dispute reported	06/30/2026	1200179560	CMS
Novartis Pharmaceuticals Corporation	$0.78	06/05/2025	Food and Beverage	No dispute reported	06/30/2026	1200179562	CMS
Celgene Corporation	$27.04	06/02/2025	Food and Beverage	No dispute reported	06/30/2026	1184746490	CMS
E.R. Squibb & Sons, L.L.C.	$23.66	05/30/2025	Food and Beverage	No dispute reported	06/30/2026	1184746492	CMS
SOBI, INC	$16.25	05/29/2025	Food and Beverage	No dispute reported	06/30/2026	1240239771	CMS
Novartis Pharmaceuticals Corporation	$16.85	05/23/2025	Food and Beverage	No dispute reported	06/30/2026	1200179568	CMS
PFIZER INC.	$17.05	05/23/2025	Food and Beverage	No dispute reported	06/30/2026	1231539202	CMS
Celgene Corporation	$19.99	05/19/2025	Food and Beverage	No dispute reported	06/30/2026	1184746484	CMS
Exelixis Inc.	$17.69	05/19/2025	Food and Beverage	No dispute reported	06/30/2026	1218798995	CMS
Merck Sharp & Dohme LLC	$27.04	05/16/2025	Food and Beverage	No dispute reported	06/30/2026	1238256261	CMS
Novartis Pharmaceuticals Corporation	$15.11	05/15/2025	Food and Beverage	No dispute reported	06/30/2026	1200179566	CMS
BeOne Medicines USA, Inc.	$28.45	05/14/2025	Food and Beverage	No dispute reported	06/30/2026	1202891176	CMS
Ipsen Biopharmaceuticals, Inc	$23.84	05/13/2025	Food and Beverage	No dispute reported	06/30/2026	1208847391	CMS
RECORDATI_RARE_DISEASES_INC.	$16.54	05/07/2025	Food and Beverage	No dispute reported	06/30/2026	1181713594	CMS
Regeneron Healthcare Solutions, Inc.	$19.57	05/06/2025	Food and Beverage	No dispute reported	06/30/2026	1212885822	CMS
Genentech USA, Inc.	$17.74	05/05/2025	Food and Beverage	No dispute reported	06/30/2026	1211549332	CMS
E.R. Squibb & Sons, L.L.C.	$8.89	05/02/2025	Food and Beverage	No dispute reported	06/30/2026	1184746480	CMS
Merck Sharp & Dohme LLC	$19.84	05/01/2025	Food and Beverage	No dispute reported	06/30/2026	1238010392	CMS
Merck Sharp & Dohme LLC	$22.98	04/30/2025	Food and Beverage	No dispute reported	06/30/2026	1238014158	CMS
Celgene Corporation	$19.95	04/28/2025	Food and Beverage	No dispute reported	06/30/2026	1184746486	CMS
AstraZeneca Pharmaceuticals LP	$13.50	04/25/2025	Food and Beverage	No dispute reported	06/30/2026	1206142522	CMS
SOBI, INC	$20.12	04/25/2025	Food and Beverage	No dispute reported	06/30/2026	1240239767	CMS
Merck Sharp & Dohme LLC	$10.79	04/23/2025	Food and Beverage	No dispute reported	06/30/2026	1238156425	CMS
Kite Pharma, Inc.	$19.12	04/22/2025	Food and Beverage	No dispute reported	06/30/2026	1212084701	CMS
AstraZeneca Pharmaceuticals LP	$19.05	04/21/2025	Food and Beverage	No dispute reported	06/30/2026	1206706217	CMS
Janssen Biotech, Inc.	$21.79	04/16/2025	Food and Beverage	No dispute reported	06/30/2026	1175400667	CMS
Rigel Pharmaceuticals, Inc.	$17.76	04/16/2025	Food and Beverage	No dispute reported	06/30/2026	1247372598	CMS
Novartis Pharmaceuticals Corporation	$19.07	04/09/2025	Food and Beverage	No dispute reported	06/30/2026	1200179554	CMS
Karyopharm Therapeutics Inc.	$19.73	04/08/2025	Food and Beverage	No dispute reported	06/30/2026	1246649026	CMS
AstraZeneca Pharmaceuticals LP	$16.05	04/07/2025	Food and Beverage	No dispute reported	06/30/2026	1207007607	CMS
E.R. Squibb & Sons, L.L.C.	$19.41	04/04/2025	Food and Beverage	No dispute reported	06/30/2026	1184746468	CMS
Novartis Pharmaceuticals Corporation	$12.83	03/28/2025	Food and Beverage	No dispute reported	06/30/2026	1200179558	CMS
ABBVIE INC.	$23.53	03/27/2025	Food and Beverage	No dispute reported	06/30/2026	1201625378	CMS
Merck Sharp & Dohme LLC	$21.23	03/27/2025	Food and Beverage	No dispute reported	06/30/2026	1238074295	CMS
Geron Corporation	$20.41	03/26/2025	Food and Beverage	No dispute reported	06/30/2026	1238887446	CMS
Regeneron Healthcare Solutions, Inc.	$18.64	03/25/2025	Food and Beverage	No dispute reported	06/30/2026	1212885820	CMS
GlaxoSmithKline, LLC.	$16.98	03/24/2025	Food and Beverage	No dispute reported	06/30/2026	1191540799	CMS
Novartis Pharmaceuticals Corporation	$17.15	03/17/2025	Food and Beverage	No dispute reported	06/30/2026	1200179564	CMS
E.R. Squibb & Sons, L.L.C.	$20.86	03/14/2025	Food and Beverage	No dispute reported	06/30/2026	1184746450	CMS
E.R. Squibb & Sons, L.L.C.	$14.21	03/11/2025	Food and Beverage	No dispute reported	06/30/2026	1184746464	CMS
Celgene Corporation	$32.58	03/07/2025	Food and Beverage	No dispute reported	06/30/2026	1184746448	CMS
Bayer Healthcare Pharmaceuticals Inc.	$25.02	03/06/2025	Food and Beverage	No dispute reported	06/30/2026	1225490125	CMS
Eisai Inc.	$17.39	03/05/2025	Food and Beverage	No dispute reported	06/30/2026	1244498337	CMS
E.R. Squibb & Sons, L.L.C.	$21.15	03/03/2025	Food and Beverage	No dispute reported	06/30/2026	1184746444	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$33.25	02/27/2025	Food and Beverage	No dispute reported	06/30/2026	1223931108	CMS
Merck Sharp & Dohme LLC	$29.73	02/26/2025	Food and Beverage	No dispute reported	06/30/2026	1238342902	CMS
ABBVIE INC.	$17.98	02/25/2025	Food and Beverage	No dispute reported	06/30/2026	1201625376	CMS
Daiichi Sankyo Inc.	$28.18	02/24/2025	Food and Beverage	No dispute reported	06/30/2026	1197047551	CMS
Rigel Pharmaceuticals, Inc.	$14.36	02/20/2025	Food and Beverage	No dispute reported	06/30/2026	1247369975	CMS
TAIHO ONCOLOGY, INC.	$20.50	02/19/2025	Food and Beverage	No dispute reported	06/30/2026	1211414500	CMS
Ipsen Biopharmaceuticals, Inc	$24.90	02/18/2025	Food and Beverage	No dispute reported	06/30/2026	1208847389	CMS
Stemline Therapeutics Inc.	$20.44	02/17/2025	Food and Beverage	No dispute reported	06/30/2026	1244099539	CMS
Genentech USA, Inc.	$29.50	02/11/2025	Food and Beverage	No dispute reported	06/30/2026	1211549328	CMS
Daiichi Sankyo Inc.	$25.16	02/10/2025	Food and Beverage	No dispute reported	06/30/2026	1197049045	CMS
PFIZER INC.	$17.09	02/07/2025	Food and Beverage	No dispute reported	06/30/2026	1231560946	CMS
ARRAY BIOPHARMA INC	$18.29	02/04/2025	Food and Beverage	No dispute reported	06/30/2026	1231643263	CMS
Merck Sharp & Dohme LLC	$23.68	02/04/2025	Food and Beverage	No dispute reported	06/30/2026	1238295047	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$30.80	01/30/2025	Food and Beverage	No dispute reported	06/30/2026	1223924276	CMS
PFIZER INC.	$20.52	01/29/2025	Food and Beverage	No dispute reported	06/30/2026	1231255395	CMS
Lilly USA, LLC	$17.85	01/28/2025	Food and Beverage	No dispute reported	06/30/2026	1186840257	CMS
Novartis Pharmaceuticals Corporation	$18.20	01/24/2025	Food and Beverage	No dispute reported	06/30/2026	1200179552	CMS
Acrotech Biopharma Inc.	$15.20	01/20/2025	Food and Beverage	No dispute reported	06/30/2026	1237535272	CMS
Merck Sharp & Dohme LLC	$16.04	01/17/2025	Food and Beverage	No dispute reported	06/30/2026	1238107284	CMS
Janssen Biotech, Inc.	$17.69	01/14/2025	Food and Beverage	No dispute reported	06/30/2026	1175401799	CMS
Novartis Pharmaceuticals Corporation	$11.19	01/10/2025	Food and Beverage	No dispute reported	06/30/2026	1200179550	CMS
Exelixis Inc.	$22.47	01/09/2025	Food and Beverage	No dispute reported	06/30/2026	1218798993	CMS
GlaxoSmithKline, LLC.	$14.98	01/08/2025	Food and Beverage	No dispute reported	06/30/2026	1190625206	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: 2021, 2022, 2023, 2024, 2025
Source files: Dataset page · Bulk file · 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-1245735661

Plain: MICHAEL CHAHIN, NPI 1245735661. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1245735661.
APA 7: IndustryPayments. (2026). MICHAEL CHAHIN, NPI 1245735661 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1245735661
Bluebook: MICHAEL CHAHIN, NPI 1245735661, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1245735661.

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