IndustryPayments
Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · as published 2026-06-30 View official record Methodology

Covered recipient · General Payments record

MICHAEL CHAHIN

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI
1245735661
CMS profile
7222093
Location
SAVANNAH, GA

General Payments · PY2021–2025

$5,708.46

  • Reported across 186 records
  • CMS publication 2026-06-30

Latest program year · PY2025

$2,255.30

111 records · 0 disputed

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

How these totals are calculated
  • The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. 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 (all years).
  • Methodology & Data — sourcing, labeling, and limitations.

Related groups: Hematology & Oncology GA All categories

By nature of payment

PY2025 · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $2,234.79 110
Education $20.51 1

By paying entity

PY2025 · sorted by reported total

Paying entityAmountRecords
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 yearAmountRecords
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)

Sorted by paying entity, then date · as published by CMS

Program year 2025 2021202220232024 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. $17.98 02/25/2025 Food and Beverage Undisputed 06/30/2026 1201625376 CMS
ABBVIE INC. $23.53 03/27/2025 Food and Beverage Undisputed 06/30/2026 1201625378 CMS
ABBVIE INC. $14.95 07/10/2025 Food and Beverage Undisputed 06/30/2026 1201625380 CMS
ABBVIE INC. $16.55 08/20/2025 Food and Beverage Undisputed 06/30/2026 1201625382 CMS
ABBVIE INC. $15.45 08/31/2025 Food and Beverage Undisputed 06/30/2026 1201625384 CMS
Acrotech Biopharma Inc. $15.20 01/20/2025 Food and Beverage Undisputed 06/30/2026 1237535272 CMS
ADC THERAPEUTICS AMERICA, INC. $15.74 11/27/2025 Food and Beverage Undisputed 06/30/2026 1246114683 CMS
ARRAY BIOPHARMA INC $18.29 02/04/2025 Food and Beverage Undisputed 06/30/2026 1231643263 CMS
ARRAY BIOPHARMA INC $15.32 06/11/2025 Food and Beverage Undisputed 06/30/2026 1228906639 CMS
ARRAY BIOPHARMA INC $23.40 10/31/2025 Food and Beverage Undisputed 06/30/2026 1229530193 CMS
AstraZeneca Pharmaceuticals LP $16.05 04/07/2025 Food and Beverage Undisputed 06/30/2026 1207007607 CMS
AstraZeneca Pharmaceuticals LP $19.05 04/21/2025 Food and Beverage Undisputed 06/30/2026 1206706217 CMS
AstraZeneca Pharmaceuticals LP $13.50 04/25/2025 Food and Beverage Undisputed 06/30/2026 1206142522 CMS
AstraZeneca Pharmaceuticals LP $19.46 08/15/2025 Food and Beverage Undisputed 06/30/2026 1206469685 CMS
AstraZeneca Pharmaceuticals LP $19.57 09/05/2025 Food and Beverage Undisputed 06/30/2026 1207000810 CMS
AstraZeneca Pharmaceuticals LP $25.85 09/10/2025 Food and Beverage Undisputed 06/30/2026 1207187125 CMS
Azurity Pharmaceuticals, Inc. $15.86 06/27/2025 Food and Beverage Undisputed 06/30/2026 1242669080 CMS
Bayer Healthcare Pharmaceuticals Inc. $25.02 03/06/2025 Food and Beverage Undisputed 06/30/2026 1225490125 CMS
Bayer Healthcare Pharmaceuticals Inc. $18.30 07/15/2025 Food and Beverage Undisputed 06/30/2026 1225490127 CMS
BeOne Medicines USA, Inc. $28.45 05/14/2025 Food and Beverage Undisputed 06/30/2026 1202891176 CMS
BeOne Medicines USA, Inc. $26.39 10/29/2025 Food and Beverage Undisputed 06/30/2026 1202891174 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $26.97 11/11/2025 Food and Beverage Undisputed 06/30/2026 1222831839 CMS
Celgene Corporation $32.58 03/07/2025 Food and Beverage Undisputed 06/30/2026 1184746448 CMS
Celgene Corporation $19.95 04/28/2025 Food and Beverage Undisputed 06/30/2026 1184746486 CMS
Celgene Corporation $19.99 05/19/2025 Food and Beverage Undisputed 06/30/2026 1184746484 CMS
Celgene Corporation $27.04 06/02/2025 Food and Beverage Undisputed 06/30/2026 1184746490 CMS
Celgene Corporation $31.98 10/22/2025 Food and Beverage Undisputed 06/30/2026 1184746540 CMS
Celgene Corporation $7.73 10/22/2025 Food and Beverage Undisputed 06/30/2026 1184746542 CMS
Daiichi Sankyo Inc. $25.16 02/10/2025 Food and Beverage Undisputed 06/30/2026 1197049045 CMS
Daiichi Sankyo Inc. $28.18 02/24/2025 Food and Beverage Undisputed 06/30/2026 1197047551 CMS
Daiichi Sankyo Inc. $26.48 09/19/2025 Food and Beverage Undisputed 06/30/2026 1197092037 CMS
Daiichi Sankyo Inc. $28.09 10/01/2025 Food and Beverage Undisputed 06/30/2026 1197031641 CMS
Daiichi Sankyo Inc. $28.54 11/19/2025 Food and Beverage Undisputed 06/30/2026 1197008119 CMS
E.R. Squibb & Sons, L.L.C. $21.15 03/03/2025 Food and Beverage Undisputed 06/30/2026 1184746444 CMS
E.R. Squibb & Sons, L.L.C. $14.21 03/11/2025 Food and Beverage Undisputed 06/30/2026 1184746464 CMS
E.R. Squibb & Sons, L.L.C. $20.86 03/14/2025 Food and Beverage Undisputed 06/30/2026 1184746450 CMS
E.R. Squibb & Sons, L.L.C. $19.41 04/04/2025 Food and Beverage Undisputed 06/30/2026 1184746468 CMS
E.R. Squibb & Sons, L.L.C. $8.89 05/02/2025 Food and Beverage Undisputed 06/30/2026 1184746480 CMS
E.R. Squibb & Sons, L.L.C. $23.66 05/30/2025 Food and Beverage Undisputed 06/30/2026 1184746492 CMS
E.R. Squibb & Sons, L.L.C. $12.55 06/26/2025 Food and Beverage Undisputed 06/30/2026 1184746498 CMS
E.R. Squibb & Sons, L.L.C. $23.10 07/01/2025 Food and Beverage Undisputed 06/30/2026 1184746488 CMS
E.R. Squibb & Sons, L.L.C. $25.13 07/22/2025 Food and Beverage Undisputed 06/30/2026 1184746518 CMS
E.R. Squibb & Sons, L.L.C. $21.13 09/22/2025 Food and Beverage Undisputed 06/30/2026 1184746522 CMS
E.R. Squibb & Sons, L.L.C. $18.38 12/10/2025 Food and Beverage Undisputed 06/30/2026 1184746554 CMS
Eisai Inc. $17.39 03/05/2025 Food and Beverage Undisputed 06/30/2026 1244498337 CMS
EMD Serono, Inc. $19.26 09/12/2025 Food and Beverage Undisputed 06/30/2026 1236870169 CMS
Exelixis Inc. $22.47 01/09/2025 Food and Beverage Undisputed 06/30/2026 1218798993 CMS
Exelixis Inc. $17.69 05/19/2025 Food and Beverage Undisputed 06/30/2026 1218798995 CMS
Genentech USA, Inc. $29.50 02/11/2025 Food and Beverage Undisputed 06/30/2026 1211549328 CMS
Genentech USA, Inc. $17.74 05/05/2025 Food and Beverage Undisputed 06/30/2026 1211549332 CMS
Geron Corporation $20.41 03/26/2025 Food and Beverage Undisputed 06/30/2026 1238887446 CMS
Gilead Sciences, Inc. $23.14 06/25/2025 Food and Beverage Undisputed 06/30/2026 1234492948 CMS
GlaxoSmithKline, LLC. $14.98 01/08/2025 Food and Beverage Undisputed 06/30/2026 1190625206 CMS
GlaxoSmithKline, LLC. $16.98 03/24/2025 Food and Beverage Undisputed 06/30/2026 1191540799 CMS
GlaxoSmithKline, LLC. $19.52 07/18/2025 Food and Beverage Undisputed 06/30/2026 1191029511 CMS
GlaxoSmithKline, LLC. $14.66 08/12/2025 Food and Beverage Undisputed 06/30/2026 1191515690 CMS
Ipsen Biopharmaceuticals, Inc $24.90 02/18/2025 Food and Beverage Undisputed 06/30/2026 1208847389 CMS
Ipsen Biopharmaceuticals, Inc $23.84 05/13/2025 Food and Beverage Undisputed 06/30/2026 1208847391 CMS
Janssen Biotech, Inc. $17.69 01/14/2025 Food and Beverage Undisputed 06/30/2026 1175401799 CMS
Janssen Biotech, Inc. $21.79 04/16/2025 Food and Beverage Undisputed 06/30/2026 1175400667 CMS
Janssen Biotech, Inc. $29.94 07/08/2025 Food and Beverage Undisputed 06/30/2026 1175402638 CMS
Janssen Biotech, Inc. $35.14 09/18/2025 Food and Beverage Undisputed 06/30/2026 1175401705 CMS
Janssen Pharmaceuticals, Inc $20.51 07/30/2025 Education Undisputed 06/30/2026 1174390507 CMS
Karyopharm Therapeutics Inc. $19.73 04/08/2025 Food and Beverage Undisputed 06/30/2026 1246649026 CMS
Kite Pharma, Inc. $19.12 04/22/2025 Food and Beverage Undisputed 06/30/2026 1212084701 CMS
Lilly USA, LLC $17.85 01/28/2025 Food and Beverage Undisputed 06/30/2026 1186840257 CMS
Merck Sharp & Dohme LLC $16.04 01/17/2025 Food and Beverage Undisputed 06/30/2026 1238107284 CMS
Merck Sharp & Dohme LLC $23.68 02/04/2025 Food and Beverage Undisputed 06/30/2026 1238295047 CMS
Merck Sharp & Dohme LLC $29.73 02/26/2025 Food and Beverage Undisputed 06/30/2026 1238342902 CMS
Merck Sharp & Dohme LLC $21.23 03/27/2025 Food and Beverage Undisputed 06/30/2026 1238074295 CMS
Merck Sharp & Dohme LLC $10.79 04/23/2025 Food and Beverage Undisputed 06/30/2026 1238156425 CMS
Merck Sharp & Dohme LLC $22.98 04/30/2025 Food and Beverage Undisputed 06/30/2026 1238014158 CMS
Merck Sharp & Dohme LLC $19.84 05/01/2025 Food and Beverage Undisputed 06/30/2026 1238010392 CMS
Merck Sharp & Dohme LLC $27.04 05/16/2025 Food and Beverage Undisputed 06/30/2026 1238256261 CMS
Merck Sharp & Dohme LLC $30.27 08/01/2025 Food and Beverage Undisputed 06/30/2026 1238156423 CMS
Merck Sharp & Dohme LLC $13.41 11/18/2025 Food and Beverage Undisputed 06/30/2026 1238011522 CMS
Merck Sharp & Dohme LLC $26.34 11/21/2025 Food and Beverage Undisputed 06/30/2026 1238196840 CMS
Novartis Pharmaceuticals Corporation $11.19 01/10/2025 Food and Beverage Undisputed 06/30/2026 1200179550 CMS
Novartis Pharmaceuticals Corporation $18.20 01/24/2025 Food and Beverage Undisputed 06/30/2026 1200179552 CMS
Novartis Pharmaceuticals Corporation $17.15 03/17/2025 Food and Beverage Undisputed 06/30/2026 1200179564 CMS
Novartis Pharmaceuticals Corporation $12.83 03/28/2025 Food and Beverage Undisputed 06/30/2026 1200179558 CMS
Novartis Pharmaceuticals Corporation $19.07 04/09/2025 Food and Beverage Undisputed 06/30/2026 1200179554 CMS
Novartis Pharmaceuticals Corporation $15.11 05/15/2025 Food and Beverage Undisputed 06/30/2026 1200179566 CMS
Novartis Pharmaceuticals Corporation $16.85 05/23/2025 Food and Beverage Undisputed 06/30/2026 1200179568 CMS
Novartis Pharmaceuticals Corporation $13.27 06/05/2025 Food and Beverage Undisputed 06/30/2026 1200179560 CMS
Novartis Pharmaceuticals Corporation $0.78 06/05/2025 Food and Beverage Undisputed 06/30/2026 1200179562 CMS
Novartis Pharmaceuticals Corporation $19.89 07/02/2025 Food and Beverage Undisputed 06/30/2026 1200179570 CMS
Novartis Pharmaceuticals Corporation $17.23 07/11/2025 Food and Beverage Undisputed 06/30/2026 1200179572 CMS
PFIZER INC. $20.52 01/29/2025 Food and Beverage Undisputed 06/30/2026 1231255395 CMS
PFIZER INC. $17.09 02/07/2025 Food and Beverage Undisputed 06/30/2026 1231560946 CMS
PFIZER INC. $17.05 05/23/2025 Food and Beverage Undisputed 06/30/2026 1231539202 CMS
PFIZER INC. $27.41 06/25/2025 Food and Beverage Undisputed 06/30/2026 1231687878 CMS
PFIZER INC. $21.41 10/10/2025 Food and Beverage Undisputed 06/30/2026 1229509916 CMS
PFIZER INC. $21.42 11/12/2025 Food and Beverage Undisputed 06/30/2026 1229823610 CMS
PharmaEssentia USA Corporation $19.12 08/19/2025 Food and Beverage Undisputed 06/30/2026 1246833999 CMS
RECORDATI_RARE_DISEASES_INC. $16.54 05/07/2025 Food and Beverage Undisputed 06/30/2026 1181713594 CMS
Regeneron Healthcare Solutions, Inc. $18.64 03/25/2025 Food and Beverage Undisputed 06/30/2026 1212885820 CMS
Regeneron Healthcare Solutions, Inc. $19.57 05/06/2025 Food and Beverage Undisputed 06/30/2026 1212885822 CMS
Regeneron Healthcare Solutions, Inc. $21.10 07/07/2025 Food and Beverage Undisputed 06/30/2026 1212885824 CMS
Regeneron Healthcare Solutions, Inc. $22.09 11/07/2025 Food and Beverage Undisputed 06/30/2026 1212885826 CMS
Rigel Pharmaceuticals, Inc. $14.36 02/20/2025 Food and Beverage Undisputed 06/30/2026 1247369975 CMS
Rigel Pharmaceuticals, Inc. $17.76 04/16/2025 Food and Beverage Undisputed 06/30/2026 1247372598 CMS
Rigel Pharmaceuticals, Inc. $26.42 06/06/2025 Food and Beverage Undisputed 06/30/2026 1247374500 CMS
SOBI, INC $20.12 04/25/2025 Food and Beverage Undisputed 06/30/2026 1240239767 CMS
SOBI, INC $16.25 05/29/2025 Food and Beverage Undisputed 06/30/2026 1240239771 CMS
SOBI, INC $16.77 06/13/2025 Food and Beverage Undisputed 06/30/2026 1240239776 CMS
Stemline Therapeutics Inc. $20.44 02/17/2025 Food and Beverage Undisputed 06/30/2026 1244099539 CMS
TAIHO ONCOLOGY, INC. $20.50 02/19/2025 Food and Beverage Undisputed 06/30/2026 1211414500 CMS
Takeda Pharmaceuticals U.S.A., Inc. $30.80 01/30/2025 Food and Beverage Undisputed 06/30/2026 1223924276 CMS
Takeda Pharmaceuticals U.S.A., Inc. $33.25 02/27/2025 Food and Beverage Undisputed 06/30/2026 1223931108 CMS
Takeda Pharmaceuticals U.S.A., Inc. $14.43 07/23/2025 Food and Beverage Undisputed 06/30/2026 1223815738 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.