IndustryPayments
Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · as published 2026-01-23 View official record Methodology

Covered recipient · General Payments record

KLEMENS N HUYNH

Allopathic & Osteopathic Physicians Internal Medicine Nephrology

NPI
1184652935
CMS profile
1250630
Location
HIGHLAND, CA

General Payments · PY2018–2024

$9,118.58

  • Reported across 245 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$2,847.76

82 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 CA All categories

By nature of payment

PY2024 · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $2,104.69 73
Travel and Lodging $718.46 8
Education $24.61 1

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
Medtronic, Inc. $936.29 12
Ardelyx, Inc. $288.44 12
Acerta Pharma LLC $254.61 11
Mallinckrodt Hospital Products Inc. $242.32 9
Boehringer Ingelheim Pharmaceuticals, Inc. $233.99 7
CALLIDITAS THERAPEUTICS US INC. $185.99 4
Bayer HealthCare Pharmaceuticals Inc. $107.43 5
NXSTAGE MEDICAL, INC. $100.32 1
Retrophin, Inc. $98.86 4
Amgen Inc. $90.08 4
AKEBIA THERAPEUTICS INC $69.06 3
NOVARTIS PHARMACEUTICALS CORPORATION $67.85 3
Otsuka America Pharmaceutical, Inc. $49.76 2
Relypsa, Inc. $43.00 2
GlaxoSmithKline, LLC. $30.71 1
Aurinia Pharma U.S., Inc. $24.90 1
Lexicon Pharmaceuticals, Inc. $24.15 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $277.33 5
PY2019 $480.61 7
PY2020 $113.19 6
PY2021 $1,980.05 34
PY2022 $1,684.65 50
PY2023 $1,734.99 61
PY2024 $2,847.76 82

Payment records · PY2024 (82)

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

Program year 2024 201820192020202120222023 Record-level detail is published for PY2024; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
AKEBIA THERAPEUTICS INC $22.89 03/13/2024 Food and Beverage Undisputed 01/23/2026 1145827340 CMS
AKEBIA THERAPEUTICS INC $21.56 05/15/2024 Food and Beverage Undisputed 01/23/2026 1145827350 CMS
AKEBIA THERAPEUTICS INC $24.61 10/30/2024 Education Undisputed 01/23/2026 1145834131 CMS
Amgen Inc. $19.60 02/07/2024 Food and Beverage Undisputed 01/23/2026 1111604316 CMS
Amgen Inc. $25.94 02/29/2024 Food and Beverage Undisputed 01/23/2026 1111604322 CMS
Amgen Inc. $20.96 05/22/2024 Food and Beverage Undisputed 01/23/2026 1111604318 CMS
Amgen Inc. $23.58 05/22/2024 Food and Beverage Undisputed 01/23/2026 1111604320 CMS
Ardelyx, Inc. $6.32 01/11/2024 Food and Beverage Undisputed 01/23/2026 1146685795 CMS
Ardelyx, Inc. $22.19 01/24/2024 Food and Beverage Undisputed 01/23/2026 1146685797 CMS
Ardelyx, Inc. $11.33 04/17/2024 Food and Beverage Undisputed 01/23/2026 1146685799 CMS
Ardelyx, Inc. $20.00 05/28/2024 Food and Beverage Undisputed 01/23/2026 1146685801 CMS
Ardelyx, Inc. $9.86 06/26/2024 Food and Beverage Undisputed 01/23/2026 1146685803 CMS
Ardelyx, Inc. $8.93 07/25/2024 Food and Beverage Undisputed 01/23/2026 1146685805 CMS
Ardelyx, Inc. $19.67 08/08/2024 Food and Beverage Undisputed 01/23/2026 1146685807 CMS
Ardelyx, Inc. $9.50 09/19/2024 Food and Beverage Undisputed 01/23/2026 1146685809 CMS
Ardelyx, Inc. $17.99 10/10/2024 Food and Beverage Undisputed 01/23/2026 1146685811 CMS
Ardelyx, Inc. $11.69 11/07/2024 Food and Beverage Undisputed 01/23/2026 1146685813 CMS
Ardelyx, Inc. $124.83 11/12/2024 Food and Beverage Undisputed 01/23/2026 1146685815 CMS
Ardelyx, Inc. $26.13 12/12/2024 Food and Beverage Undisputed 01/23/2026 1146685817 CMS
AstraZeneca Pharmaceuticals LP $20.96 01/04/2024 Food and Beverage Undisputed 01/23/2026 1104433269 CMS
AstraZeneca Pharmaceuticals LP $19.98 02/28/2024 Food and Beverage Undisputed 01/23/2026 1105681583 CMS
AstraZeneca Pharmaceuticals LP $42.31 03/06/2024 Food and Beverage Undisputed 01/23/2026 1104228921 CMS
AstraZeneca Pharmaceuticals LP $21.73 04/05/2024 Food and Beverage Undisputed 01/23/2026 1104396755 CMS
AstraZeneca Pharmaceuticals LP $21.25 05/02/2024 Food and Beverage Undisputed 01/23/2026 1104733717 CMS
AstraZeneca Pharmaceuticals LP $21.85 07/17/2024 Food and Beverage Undisputed 01/23/2026 1104253603 CMS
AstraZeneca Pharmaceuticals LP $23.42 07/30/2024 Food and Beverage Undisputed 01/23/2026 1104783586 CMS
AstraZeneca Pharmaceuticals LP $30.58 09/18/2024 Food and Beverage Undisputed 01/23/2026 1104436251 CMS
AstraZeneca Pharmaceuticals LP $16.24 10/02/2024 Food and Beverage Undisputed 01/23/2026 1105770662 CMS
AstraZeneca Pharmaceuticals LP $16.66 11/20/2024 Food and Beverage Undisputed 01/23/2026 1105698788 CMS
AstraZeneca Pharmaceuticals LP $19.63 12/18/2024 Food and Beverage Undisputed 01/23/2026 1104545950 CMS
Aurinia Pharma U.S., Inc. $24.90 01/31/2024 Food and Beverage Undisputed 01/23/2026 1150683068 CMS
Bayer Healthcare Pharmaceuticals Inc. $23.76 04/10/2024 Food and Beverage Undisputed 01/23/2026 1086208993 CMS
Bayer Healthcare Pharmaceuticals Inc. $26.10 05/08/2024 Food and Beverage Undisputed 01/23/2026 1086119552 CMS
Bayer Healthcare Pharmaceuticals Inc. $18.30 08/14/2024 Food and Beverage Undisputed 01/23/2026 1086157694 CMS
Bayer Healthcare Pharmaceuticals Inc. $16.94 09/12/2024 Food and Beverage Undisputed 01/23/2026 1086112418 CMS
Bayer Healthcare Pharmaceuticals Inc. $22.33 11/20/2024 Food and Beverage Undisputed 01/23/2026 1086249968 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $14.38 01/04/2024 Food and Beverage Undisputed 01/23/2026 1117907162 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $17.87 02/21/2024 Food and Beverage Undisputed 01/23/2026 1117907166 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $11.78 04/11/2024 Food and Beverage Undisputed 01/23/2026 1117907160 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $125.00 04/17/2024 Food and Beverage Undisputed 01/23/2026 1117907172 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $27.12 05/23/2024 Food and Beverage Undisputed 01/23/2026 1117907170 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $21.08 09/05/2024 Food and Beverage Undisputed 01/23/2026 1117907168 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $16.76 09/26/2024 Food and Beverage Undisputed 01/23/2026 1117907164 CMS
CALLIDITAS THERAPEUTICS US INC. $15.00 03/13/2024 Food and Beverage Undisputed 01/23/2026 1141511235 CMS
CALLIDITAS THERAPEUTICS US INC. $22.80 04/25/2024 Food and Beverage Undisputed 01/23/2026 1141513987 CMS
CALLIDITAS THERAPEUTICS US INC. $124.57 05/16/2024 Food and Beverage Undisputed 01/23/2026 1141515297 CMS
CALLIDITAS THERAPEUTICS US INC. $23.62 06/27/2024 Food and Beverage Undisputed 01/23/2026 1141517693 CMS
GlaxoSmithKline, LLC. $30.71 08/15/2024 Food and Beverage Undisputed 01/23/2026 1116531800 CMS
Lexicon Pharmaceuticals, Inc. $24.15 09/19/2024 Food and Beverage Undisputed 01/23/2026 1081718208 CMS
Mallinckrodt Hospital Products Inc. $12.16 08/21/2024 Food and Beverage Undisputed 01/23/2026 1145085423 CMS
Mallinckrodt Hospital Products Inc. $18.25 08/29/2024 Food and Beverage Undisputed 01/23/2026 1145085427 CMS
Mallinckrodt Hospital Products Inc. $12.19 09/25/2024 Food and Beverage Undisputed 01/23/2026 1145085432 CMS
Mallinckrodt Hospital Products Inc. $124.95 10/02/2024 Food and Beverage Undisputed 01/23/2026 1145085436 CMS
Mallinckrodt Hospital Products Inc. $11.21 10/16/2024 Food and Beverage Undisputed 01/23/2026 1145085440 CMS
Mallinckrodt Hospital Products Inc. $4.38 11/13/2024 Food and Beverage Undisputed 01/23/2026 1145085444 CMS
Mallinckrodt Hospital Products Inc. $10.71 11/13/2024 Food and Beverage Undisputed 01/23/2026 1145085448 CMS
Mallinckrodt Hospital Products Inc. $15.00 12/05/2024 Food and Beverage Undisputed 01/23/2026 1145085452 CMS
Mallinckrodt Hospital Products Inc. $33.47 12/12/2024 Food and Beverage Undisputed 01/23/2026 1145085457 CMS
Medtronic, Inc. $244.93 09/20/2024 Travel and Lodging Undisputed 01/23/2026 1117100139 CMS
Medtronic, Inc. $34.25 09/20/2024 Travel and Lodging Undisputed 01/23/2026 1117100141 CMS
Medtronic, Inc. $34.25 09/20/2024 Travel and Lodging Undisputed 01/23/2026 1117100143 CMS
Medtronic, Inc. $195.86 09/20/2024 Travel and Lodging Undisputed 01/23/2026 1117100145 CMS
Medtronic, Inc. $26.02 10/04/2024 Food and Beverage Undisputed 01/23/2026 1117100149 CMS
Medtronic, Inc. $5.25 10/10/2024 Food and Beverage Undisputed 01/23/2026 1117100151 CMS
Medtronic, Inc. $24.99 10/11/2024 Travel and Lodging Undisputed 01/23/2026 1112067996 CMS
Medtronic, Inc. $36.00 10/11/2024 Travel and Lodging Undisputed 01/23/2026 1112067998 CMS
Medtronic, Inc. $129.62 10/11/2024 Travel and Lodging Undisputed 01/23/2026 1117100153 CMS
Medtronic, Inc. $18.56 10/11/2024 Travel and Lodging Undisputed 01/23/2026 1117100155 CMS
Medtronic, Inc. $24.77 10/12/2024 Food and Beverage Undisputed 01/23/2026 1117100147 CMS
Medtronic, Inc. $161.79 10/29/2024 Food and Beverage Undisputed 01/23/2026 1117100157 CMS
Novartis Pharmaceuticals Corporation $26.30 01/25/2024 Food and Beverage Undisputed 01/23/2026 1086882427 CMS
Novartis Pharmaceuticals Corporation $25.27 08/28/2024 Food and Beverage Undisputed 01/23/2026 1086882429 CMS
Novartis Pharmaceuticals Corporation $16.28 10/30/2024 Food and Beverage Undisputed 01/23/2026 1086882431 CMS
NXSTAGE MEDICAL, INC. $100.32 03/12/2024 Food and Beverage Undisputed 01/23/2026 1154283467 CMS
Otsuka America Pharmaceutical, Inc. $27.53 02/08/2024 Food and Beverage Undisputed 01/23/2026 1118911417 CMS
Otsuka America Pharmaceutical, Inc. $22.23 04/18/2024 Food and Beverage Undisputed 01/23/2026 1118911419 CMS
Travere Therapeutics, Inc. $27.10 02/15/2024 Food and Beverage Undisputed 01/23/2026 1149946719 CMS
Travere Therapeutics, Inc. $28.97 05/30/2024 Food and Beverage Undisputed 01/23/2026 1149946723 CMS
Travere Therapeutics, Inc. $25.80 08/21/2024 Food and Beverage Undisputed 01/23/2026 1149946716 CMS
Travere Therapeutics, Inc. $16.99 10/31/2024 Food and Beverage Undisputed 01/23/2026 1149946712 CMS
Vifor Pharma, Inc. $19.12 01/12/2024 Food and Beverage Undisputed 01/23/2026 1124042503 CMS
Vifor Pharma, Inc. $23.88 09/26/2024 Food and Beverage Undisputed 01/23/2026 1124061164 CMS

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-01-23
Program years on this page
2018, 2019, 2020, 2021, 2022, 2023, 2024
Source files
Dataset page · Bulk file · PY2018 , PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv

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