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

SAMUEL J KLEMPNER

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI
1134329378
CMS profile
1136038
Location
LOS ANGELES, CA

General Payments · PY2018–2024

$190,255.95

  • Reported across 125 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$28,985.06

16 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.

By nature of payment

PY2024 · sorted by reported total

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
Merck Sharp & Dohme Corporation $11,435.00 4
Acerta Pharma LLC $5,055.00 4
EISAI INC. $4,773.88 2
BeiGene USA, Inc. $3,375.00 1
Boehringer Ingelheim International GmbH $2,960.00 1
Daiichi Sankyo Inc. $1,290.00 1
Amgen Inc. $96.18 3

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $34,373.38 34
PY2019 $24,913.84 30
PY2020 $17,705.77 6
PY2021 $32,560.25 12
PY2022 $14,870.26 8
PY2023 $36,847.39 19
PY2024 $28,985.06 16

Payment records · PY2024 (16)

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
Amgen Inc. $40.96 06/01/2024 Food and Beverage Undisputed 01/23/2026 1117599924 CMS
Amgen Inc. $35.68 06/01/2024 Travel and Lodging Undisputed 01/23/2026 1117599926 CMS
Amgen Inc. $19.54 09/14/2024 Consulting Fee Undisputed 01/23/2026 1117599928 CMS
AstraZeneca Pharmaceuticals LP $135.00 01/18/2024 Food and Beverage Undisputed 01/23/2026 1105747563 CMS
AstraZeneca Pharmaceuticals LP $125.00 01/19/2024 Food and Beverage Undisputed 01/23/2026 1105226444 CMS
AstraZeneca Pharmaceuticals LP $2,055.00 01/29/2024 Consulting Fee Undisputed 01/23/2026 1105642898 CMS
AstraZeneca Pharmaceuticals LP $2,740.00 02/01/2024 Consulting Fee Undisputed 01/23/2026 1104686578 CMS
BeiGene USA, Inc. $3,375.00 11/25/2024 Consulting Fee Undisputed 01/23/2026 1120854751 CMS
Boehringer Ingelheim International GmbH $2,960.00 05/31/2024 Consulting Fee Undisputed 01/23/2026 1117885683 CMS
Daiichi Sankyo Inc. $1,290.00 05/01/2024 Consulting Fee Undisputed 01/23/2026 1089443275 CMS
Eisai Inc. $4,740.00 07/17/2024 Consulting Fee Undisputed 01/23/2026 1110779457 CMS
Eisai Inc. $33.88 07/17/2024 Travel and Lodging Undisputed 01/23/2026 1110779459 CMS
Merck Sharp & Dohme LLC $2,440.00 04/29/2024 Consulting Fee Undisputed 01/23/2026 1141768503 CMS
Merck Sharp & Dohme LLC $7,320.00 07/03/2024 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 1141768499 CMS
Merck Sharp & Dohme LLC $150.00 07/03/2024 Travel and Lodging Undisputed 01/23/2026 1141768501 CMS
Merck Sharp & Dohme LLC $1,525.00 07/08/2024 Consulting Fee Undisputed 01/23/2026 1141855661 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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