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

DEREK S LARSON

Allopathic & Osteopathic Physicians Internal Medicine Nephrology

NPI
1588820096
CMS profile
1063360
Location
CREVE COEUR, MO

General Payments · PY2019–2025

$604,986.98

  • Reported across 914 records
  • CMS publication 2026-06-30

Latest program year · PY2025

$45,463.04

84 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: Nephrology MO All categories

By nature of payment

PY2025 · sorted by reported total

Nature of paymentAmountRecords
Consulting Fee $20,575.00 8
Compensation for serving as faculty or as a speaker for a medical education program $9,600.00 4
Travel and Lodging $6,952.84 17
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program $5,850.00 2
Food and Beverage $2,464.20 52
Education $21.00 1

By paying entity

PY2025 · sorted by reported total

Paying entityAmountRecords
Retrophin, Inc. $33,728.53 50
Acerta Pharma LLC $7,465.32 13
Fresenius USA Marketing, Inc. $3,798.16 6
Alexion Pharmaceuticals, Inc. $175.00 1
Otsuka America Pharmaceutical, Inc. $120.64 6
CALLIDITAS THERAPEUTICS US INC. $59.22 2
Relypsa, Inc. $38.27 2
Amgen Inc. $28.40 1
Boehringer Ingelheim Pharmaceuticals, Inc. $20.90 1
Aurinia Pharma U.S., Inc. $14.49 1
NOVARTIS PHARMACEUTICALS CORPORATION $14.11 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $36,229.20 76
PY2020 $46,150.55 70
PY2021 $97,796.52 135
PY2022 $98,931.44 147
PY2023 $141,808.05 216
PY2024 $138,608.18 186
PY2025 $45,463.04 84

Payment records · PY2025 (84)

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

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
Alexion Pharmaceuticals, Inc. $175.00 03/27/2025 Consulting Fee Undisputed 06/30/2026 1202969344 CMS
Amgen Inc. $28.40 09/10/2025 Food and Beverage Undisputed 06/30/2026 1228420281 CMS
AstraZeneca Pharmaceuticals LP $13.75 01/21/2025 Food and Beverage Undisputed 06/30/2026 1206284432 CMS
AstraZeneca Pharmaceuticals LP $22.25 04/14/2025 Food and Beverage Undisputed 06/30/2026 1207150901 CMS
AstraZeneca Pharmaceuticals LP $24.63 05/05/2025 Food and Beverage Undisputed 06/30/2026 1206644056 CMS
AstraZeneca Pharmaceuticals LP $15.64 06/02/2025 Food and Beverage Undisputed 06/30/2026 1207031121 CMS
AstraZeneca Pharmaceuticals LP $22.42 06/25/2025 Food and Beverage Undisputed 06/30/2026 1207291136 CMS
AstraZeneca Pharmaceuticals LP $1,191.76 09/11/2025 Travel and Lodging Undisputed 06/30/2026 1206157044 CMS
AstraZeneca Pharmaceuticals LP $32.31 09/11/2025 Food and Beverage Undisputed 06/30/2026 1206885577 CMS
AstraZeneca Pharmaceuticals LP $125.00 09/11/2025 Food and Beverage Undisputed 06/30/2026 1207042537 CMS
AstraZeneca Pharmaceuticals LP $3,900.00 09/16/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 06/30/2026 1206158376 CMS
AstraZeneca Pharmaceuticals LP $21.00 09/16/2025 Travel and Lodging Undisputed 06/30/2026 1206837730 CMS
AstraZeneca Pharmaceuticals LP $124.53 09/16/2025 Food and Beverage Undisputed 06/30/2026 1207189018 CMS
AstraZeneca Pharmaceuticals LP $1,950.00 09/25/2025 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 06/30/2026 1207234730 CMS
AstraZeneca Pharmaceuticals LP $22.03 10/08/2025 Food and Beverage Undisputed 06/30/2026 1206361333 CMS
Aurinia Pharma U.S., Inc. $14.49 12/02/2025 Food and Beverage Undisputed 06/30/2026 1249419642 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $20.90 03/11/2025 Food and Beverage Undisputed 06/30/2026 1222951273 CMS
Calliditas Therapeutics US Inc. $38.70 06/10/2025 Food and Beverage Undisputed 06/30/2026 1235000600 CMS
Calliditas Therapeutics US Inc. $20.52 11/06/2025 Food and Beverage Undisputed 06/30/2026 1235000602 CMS
Fresenius USA Marketing, Inc. $523.00 11/18/2025 Food and Beverage Undisputed 06/30/2026 1244821817 CMS
Fresenius USA Marketing, Inc. $467.88 11/18/2025 Travel and Lodging Undisputed 06/30/2026 1244821819 CMS
Fresenius USA Marketing, Inc. $233.63 11/18/2025 Travel and Lodging Undisputed 06/30/2026 1244821821 CMS
Fresenius USA Marketing, Inc. $2,400.00 11/18/2025 Consulting Fee Undisputed 06/30/2026 1244821823 CMS
Fresenius USA Marketing, Inc. $152.65 11/18/2025 Travel and Lodging Undisputed 06/30/2026 1244821825 CMS
Fresenius USA Marketing, Inc. $21.00 11/18/2025 Education Undisputed 06/30/2026 1244821827 CMS
Novartis Pharmaceuticals Corporation $14.11 01/08/2025 Food and Beverage Undisputed 06/30/2026 1200725965 CMS
Otsuka America Pharmaceutical, Inc. $19.79 01/28/2025 Food and Beverage Undisputed 06/30/2026 1227387410 CMS
Otsuka America Pharmaceutical, Inc. $16.45 03/04/2025 Food and Beverage Undisputed 06/30/2026 1227387413 CMS
Otsuka America Pharmaceutical, Inc. $18.91 06/05/2025 Food and Beverage Undisputed 06/30/2026 1227387417 CMS
Otsuka America Pharmaceutical, Inc. $27.61 07/08/2025 Food and Beverage Undisputed 06/30/2026 1227387421 CMS
Otsuka America Pharmaceutical, Inc. $22.07 09/30/2025 Food and Beverage Undisputed 06/30/2026 1227387424 CMS
Otsuka America Pharmaceutical, Inc. $15.81 12/04/2025 Food and Beverage Undisputed 06/30/2026 1227387427 CMS
Travere Therapeutics, Inc. $13.07 02/10/2025 Food and Beverage Undisputed 06/30/2026 1244412993 CMS
Travere Therapeutics, Inc. $2.25 02/12/2025 Food and Beverage Undisputed 06/30/2026 1244396220 CMS
Travere Therapeutics, Inc. $124.98 03/11/2025 Food and Beverage Undisputed 06/30/2026 1244413042 CMS
Travere Therapeutics, Inc. $15.47 03/12/2025 Food and Beverage Undisputed 06/30/2026 1244412997 CMS
Travere Therapeutics, Inc. $3,000.00 03/20/2025 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 06/30/2026 1244413066 CMS
Travere Therapeutics, Inc. $4.87 03/21/2025 Food and Beverage Undisputed 06/30/2026 1244396222 CMS
Travere Therapeutics, Inc. $15.82 03/21/2025 Travel and Lodging Undisputed 06/30/2026 1244412999 CMS
Travere Therapeutics, Inc. $24.83 04/08/2025 Food and Beverage Undisputed 06/30/2026 1244413020 CMS
Travere Therapeutics, Inc. $3,000.00 04/11/2025 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 06/30/2026 1244413068 CMS
Travere Therapeutics, Inc. $17.72 04/28/2025 Food and Beverage Undisputed 06/30/2026 1244413012 CMS
Travere Therapeutics, Inc. $124.97 05/01/2025 Food and Beverage Undisputed 06/30/2026 1244413040 CMS
Travere Therapeutics, Inc. $3,000.00 05/09/2025 Consulting Fee Undisputed 06/30/2026 1244413070 CMS
Travere Therapeutics, Inc. $4.87 05/13/2025 Food and Beverage Undisputed 06/30/2026 1244396224 CMS
Travere Therapeutics, Inc. $18.00 05/13/2025 Travel and Lodging Undisputed 06/30/2026 1244413014 CMS
Travere Therapeutics, Inc. $125.00 05/13/2025 Food and Beverage Undisputed 06/30/2026 1244413044 CMS
Travere Therapeutics, Inc. $169.12 05/13/2025 Travel and Lodging Undisputed 06/30/2026 1244413050 CMS
Travere Therapeutics, Inc. $282.77 05/13/2025 Travel and Lodging Undisputed 06/30/2026 1244413052 CMS
Travere Therapeutics, Inc. $2,194.50 05/13/2025 Travel and Lodging Undisputed 06/30/2026 1244413062 CMS
Travere Therapeutics, Inc. $3,000.00 05/16/2025 Consulting Fee Undisputed 06/30/2026 1244413072 CMS
Travere Therapeutics, Inc. $7.94 05/20/2025 Food and Beverage Undisputed 06/30/2026 1244396228 CMS
Travere Therapeutics, Inc. $66.44 05/20/2025 Food and Beverage Undisputed 06/30/2026 1244413032 CMS
Travere Therapeutics, Inc. $74.77 05/20/2025 Travel and Lodging Undisputed 06/30/2026 1244413036 CMS
Travere Therapeutics, Inc. $3,000.00 05/30/2025 Consulting Fee Undisputed 06/30/2026 1244413074 CMS
Travere Therapeutics, Inc. $13.67 07/30/2025 Food and Beverage Undisputed 06/30/2026 1244412995 CMS
Travere Therapeutics, Inc. $111.67 09/04/2025 Food and Beverage Undisputed 06/30/2026 1244413038 CMS
Travere Therapeutics, Inc. $897.75 09/04/2025 Travel and Lodging Undisputed 06/30/2026 1244413060 CMS
Travere Therapeutics, Inc. $6.47 09/10/2025 Food and Beverage Undisputed 06/30/2026 1244396226 CMS
Travere Therapeutics, Inc. $3,000.00 09/12/2025 Consulting Fee Undisputed 06/30/2026 1244413076 CMS
Travere Therapeutics, Inc. $128.76 10/07/2025 Food and Beverage Undisputed 06/30/2026 1244413048 CMS
Travere Therapeutics, Inc. $800.00 10/08/2025 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 06/30/2026 1244413056 CMS
Travere Therapeutics, Inc. $3,000.00 10/10/2025 Consulting Fee Undisputed 06/30/2026 1244413078 CMS
Travere Therapeutics, Inc. $125.00 10/28/2025 Food and Beverage Undisputed 06/30/2026 1244413046 CMS
Travere Therapeutics, Inc. $16.00 10/30/2025 Food and Beverage Undisputed 06/30/2026 1244413001 CMS
Travere Therapeutics, Inc. $3,000.00 11/07/2025 Consulting Fee Undisputed 06/30/2026 1244413080 CMS
Travere Therapeutics, Inc. $21.86 11/10/2025 Food and Beverage Undisputed 06/30/2026 1244413018 CMS
Travere Therapeutics, Inc. $32.14 12/05/2025 Food and Beverage Undisputed 06/30/2026 1244413022 CMS
Travere Therapeutics, Inc. $32.14 12/05/2025 Food and Beverage Undisputed 06/30/2026 1244413024 CMS
Travere Therapeutics, Inc. $61.96 12/05/2025 Food and Beverage Undisputed 06/30/2026 1244413030 CMS
Travere Therapeutics, Inc. $70.65 12/05/2025 Food and Beverage Undisputed 06/30/2026 1244413034 CMS
Travere Therapeutics, Inc. $315.27 12/05/2025 Travel and Lodging Undisputed 06/30/2026 1244413054 CMS
Travere Therapeutics, Inc. $821.04 12/05/2025 Travel and Lodging Undisputed 06/30/2026 1244413058 CMS
Travere Therapeutics, Inc. $17.46 12/09/2025 Food and Beverage Undisputed 06/30/2026 1244413006 CMS
Travere Therapeutics, Inc. $2,800.00 12/10/2025 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 06/30/2026 1244413064 CMS
Travere Therapeutics, Inc. $11.90 12/19/2025 Travel and Lodging Undisputed 06/30/2026 1244412991 CMS
Travere Therapeutics, Inc. $16.39 12/19/2025 Food and Beverage Undisputed 06/30/2026 1244413004 CMS
Travere Therapeutics, Inc. $17.55 12/19/2025 Food and Beverage Undisputed 06/30/2026 1244413008 CMS
Travere Therapeutics, Inc. $17.55 12/19/2025 Food and Beverage Undisputed 06/30/2026 1244413010 CMS
Travere Therapeutics, Inc. $20.93 12/19/2025 Food and Beverage Undisputed 06/30/2026 1244413016 CMS
Travere Therapeutics, Inc. $34.00 12/19/2025 Travel and Lodging Undisputed 06/30/2026 1244413026 CMS
Travere Therapeutics, Inc. $50.98 12/19/2025 Travel and Lodging Undisputed 06/30/2026 1244413028 CMS
Vifor Pharma, Inc. $24.47 08/13/2025 Food and Beverage Undisputed 06/30/2026 1172030183 CMS
Vifor Pharma, Inc. $13.80 10/22/2025 Food and Beverage Undisputed 06/30/2026 1172030205 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

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