IndustryPayments

KWAN T TAN

Allopathic & Osteopathic Physicians|Internal Medicine LA PALMA, CA NPI 1013099746

Browse related groups: Allopathic & Osteopathic Physicians|Internal Medicine CA Acerta Pharma LLC All categories

General Payments — all program years on this page

$15,266.31

  • Category: General Payments
  • Program years: PY2018–2024
  • Record count: 782
  • As of (CMS publication): 2026-01-23

Latest program year (PY2024): $3,880.61 across 94 records · disputed records: 0

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

How this figure is 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.

By nature of payment

Latest program year (PY2024) · sorted by reported total.

Nature of paymentAmountRecords
Food and Beverage $3,874.9093
Travel and Lodging $5.711

By paying entity

Latest program year (PY2024) · sorted by reported total.

Paying entityAmountRecords
Acerta Pharma LLC $1,038.2810
Lilly USA, LLC $358.7111
GlaxoSmithKline, LLC. $348.223
ABBVIE INC. $238.348
Gilead Sciences, Inc. $237.565
Amgen Inc. $228.3113
Boehringer Ingelheim Pharmaceuticals, Inc. $165.114
Phathom Pharmaceuticals, Inc. $163.783
PFIZER INC. $155.629
Abbott Laboratories $150.521
IDORSIA PHARMACEUTICALS US INC $147.323
Radius Health, Inc. $139.247
Merck Sharp & Dohme Corporation $125.112
Otsuka America Pharmaceutical, Inc. $125.001
NOVARTIS PHARMACEUTICALS CORPORATION $94.955
Novo Nordisk AS $29.742
Janssen Pharmaceuticals, Inc $29.691
SANOFI PASTEUR INC. $20.561
Salix Pharmaceuticals, a division of Bausch Health US, LLC $19.031
Lexicon Pharmaceuticals, Inc. $18.651
Xeris Pharmaceuticals, Inc. $16.621
Cranial Technologies, Inc $16.201
Bayer HealthCare Pharmaceuticals Inc. $14.051

By program year

Program yearAmountRecords
2018 $1,157.7266
2019 $1,727.52118
2020 $1,197.4371
2021 $2,817.54167
2022 $1,959.52139
2023 $2,525.97127
2024 $3,880.6194

Records — PY2024 (94)

Record IDPaying entityAmountDate Nature of paymentDispute statusPublishedSource
1077927549 Janssen Pharmaceuticals, Inc $29.69 09/12/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1081713044 Lexicon Pharmaceuticals, Inc. $18.65 08/28/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1082216104 Cranial Technologies, Inc $16.20 06/03/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1086223900 Bayer Healthcare Pharmaceuticals Inc. $14.05 05/14/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1087405500 Novartis Pharmaceuticals Corporation $16.36 01/16/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1087405502 Novartis Pharmaceuticals Corporation $30.30 03/13/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1087405518 Novartis Pharmaceuticals Corporation $13.74 03/25/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1087405530 Novartis Pharmaceuticals Corporation $18.37 05/22/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1087405536 Novartis Pharmaceuticals Corporation $16.18 06/26/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1089967823 Radius Health, Inc. $19.62 01/30/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1089967827 Radius Health, Inc. $19.62 03/05/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1089967831 Radius Health, Inc. $19.62 03/27/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1089967845 Radius Health, Inc. $19.03 05/07/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1089967850 Radius Health, Inc. $19.62 02/13/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1089967857 Radius Health, Inc. $21.26 07/09/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1089967859 Radius Health, Inc. $20.47 07/23/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1096583077 Novo Nordisk Inc $14.80 04/28/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1096803749 Novo Nordisk Inc $14.94 02/28/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1104200471 AstraZeneca Pharmaceuticals LP $119.76 09/11/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1104393569 AstraZeneca Pharmaceuticals LP $125.00 10/03/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1104553564 AstraZeneca Pharmaceuticals LP $45.09 01/17/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1104715219 AstraZeneca Pharmaceuticals LP $125.00 05/22/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1104736169 AstraZeneca Pharmaceuticals LP $121.37 06/11/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1104742979 AstraZeneca Pharmaceuticals LP $121.37 03/07/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1104765114 AstraZeneca Pharmaceuticals LP $16.26 10/16/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1105242389 AstraZeneca Pharmaceuticals LP $121.84 03/21/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1105794250 AstraZeneca Pharmaceuticals LP $121.37 05/09/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1105853812 AstraZeneca Pharmaceuticals LP $121.22 06/12/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1106198684 ABBVIE INC. $24.01 01/09/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1106198686 ABBVIE INC. $2.99 01/25/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1106198688 ABBVIE INC. $13.32 04/30/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1106198690 ABBVIE INC. $10.16 05/03/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1106198692 ABBVIE INC. $119.99 05/23/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1106198694 ABBVIE INC. $21.61 05/28/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1106198696 ABBVIE INC. $29.31 08/19/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1106198698 ABBVIE INC. $16.95 09/30/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1111721381 Amgen Inc. $19.22 03/28/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1111721383 Amgen Inc. $27.94 06/20/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1111721385 Amgen Inc. $23.62 08/23/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1111721387 Amgen Inc. $19.19 10/25/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1111721389 Amgen Inc. $23.21 11/22/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1111721391 Amgen Inc. $25.40 01/31/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1111721393 Amgen Inc. $20.87 09/18/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1111721395 Amgen Inc. $6.56 07/31/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1111721397 Amgen Inc. $19.72 08/29/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1115760932 GlaxoSmithKline, LLC. $114.00 09/25/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1116295609 GlaxoSmithKline, LLC. $118.74 12/12/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1116657081 GlaxoSmithKline, LLC. $115.48 08/22/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1117395850 Amgen Inc. $7.73 04/03/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1117395852 Amgen Inc. $21.21 04/09/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1117395854 Amgen Inc. $6.82 10/14/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1117395856 Amgen Inc. $6.82 10/28/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1117835408 Boehringer Ingelheim Pharmaceuticals, Inc. $13.89 03/14/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1117835410 Boehringer Ingelheim Pharmaceuticals, Inc. $14.14 01/18/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1117835412 Boehringer Ingelheim Pharmaceuticals, Inc. $15.50 04/18/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1117835414 Boehringer Ingelheim Pharmaceuticals, Inc. $121.58 03/14/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1118991614 Otsuka America Pharmaceutical, Inc. $125.00 10/30/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1124792008 Abbott Laboratories $150.52 10/22/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1128736624 SANOFI PASTEUR INC. $20.56 08/27/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1131088830 PFIZER INC. $16.85 11/14/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1131115685 PFIZER INC. $27.21 01/18/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1131155193 PFIZER INC. $20.12 12/09/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1131243703 PFIZER INC. $2.46 02/07/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1131249506 PFIZER INC. $15.64 03/04/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1131359194 PFIZER INC. $17.32 04/25/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1131684633 PFIZER INC. $18.66 07/09/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1131858547 PFIZER INC. $16.36 08/23/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1131992231 PFIZER INC. $21.00 10/17/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1133766565 Gilead Sciences, Inc. $26.12 05/22/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1133766567 Gilead Sciences, Inc. $150.00 06/07/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1133766569 Gilead Sciences, Inc. $16.80 06/12/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1133766571 Gilead Sciences, Inc. $16.43 10/18/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1133766573 Gilead Sciences, Inc. $28.21 12/12/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1135081110 Lilly USA, LLC $120.49 06/18/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1135081112 Lilly USA, LLC $120.35 03/27/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1135113666 Lilly USA, LLC $8.89 07/08/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1135119819 Lilly USA, LLC $9.57 10/07/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1135119821 Lilly USA, LLC $13.13 10/23/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1135119823 Lilly USA, LLC $5.19 07/31/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1135138736 Lilly USA, LLC $5.71 03/27/2024 Travel and Lodging Undisputed 01/23/2026 View at CMS
1135138738 Lilly USA, LLC $28.26 06/04/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1135141059 Lilly USA, LLC $12.85 03/28/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1135143167 Lilly USA, LLC $14.30 02/22/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1135143169 Lilly USA, LLC $19.97 08/29/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1141701192 Merck Sharp & Dohme LLC $106.03 01/31/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1141958427 Merck Sharp & Dohme LLC $19.08 10/30/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1144602087 Xeris Pharmaceuticals, Inc. $16.62 11/05/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1146753342 IDORSIA PHARMACEUTICALS US INC $114.27 02/22/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1146754105 IDORSIA PHARMACEUTICALS US INC $16.61 02/07/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1146760104 IDORSIA PHARMACEUTICALS US INC $16.44 01/10/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1151131877 Phathom Pharmaceuticals, Inc. $113.28 03/22/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1151131879 Phathom Pharmaceuticals, Inc. $24.24 05/09/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1151131881 Phathom Pharmaceuticals, Inc. $26.26 09/19/2024 Food and Beverage Undisputed 01/23/2026 View at CMS
1153426612 Salix Pharmaceuticals, a division of Bausch Health US, LLC $19.03 06/12/2024 Food and Beverage Undisputed 01/23/2026 View at CMS

Provenance & corrections

  • Dataset: CMS Open Payments — General Payments
  • Source: CMS Open Payments dataset (bulk file)
  • Publisher of source data: Centers for Medicare & Medicaid Services
  • Generated from: OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv

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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.