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

APARNA NATARAJAN

Allopathic & Osteopathic Physicians Internal Medicine Nephrology

NPI
1417264144
CMS profile
573976
Location
CHICAGO, IL

General Payments · PY2018–2024

$5,597.36

  • Reported across 82 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$899.59

25 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

Nature of paymentAmountRecords
Food and Beverage $879.97 24
Education $19.62 1

By paying entity

PY2024 · sorted by reported total

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $21.03 1
PY2019 $50.85 3
PY2021 $601.69 10
PY2022 $2,341.63 22
PY2023 $1,682.57 21
PY2024 $899.59 25

Payment records · PY2024 (25)

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

Program year 2024 20182019202120222023 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
AstraZeneca Pharmaceuticals LP $145.98 02/22/2024 Food and Beverage Undisputed 01/23/2026 1105539331 CMS
Bayer Healthcare Pharmaceuticals Inc. $24.88 01/09/2024 Food and Beverage Undisputed 01/23/2026 1086254330 CMS
Bayer Healthcare Pharmaceuticals Inc. $25.55 01/31/2024 Food and Beverage Undisputed 01/23/2026 1086159276 CMS
Bayer Healthcare Pharmaceuticals Inc. $105.69 03/14/2024 Food and Beverage Undisputed 01/23/2026 1086205269 CMS
Bayer Healthcare Pharmaceuticals Inc. $16.80 03/20/2024 Food and Beverage Undisputed 01/23/2026 1086236860 CMS
Bayer Healthcare Pharmaceuticals Inc. $21.25 05/09/2024 Food and Beverage Undisputed 01/23/2026 1086111088 CMS
Bayer Healthcare Pharmaceuticals Inc. $13.13 06/12/2024 Food and Beverage Undisputed 01/23/2026 1086209793 CMS
Bayer Healthcare Pharmaceuticals Inc. $4.43 08/21/2024 Food and Beverage Undisputed 01/23/2026 1086088809 CMS
Bayer Healthcare Pharmaceuticals Inc. $15.01 08/21/2024 Food and Beverage Undisputed 01/23/2026 1086154725 CMS
Bayer Healthcare Pharmaceuticals Inc. $19.62 08/21/2024 Education Undisputed 01/23/2026 1086267125 CMS
Bayer Healthcare Pharmaceuticals Inc. $20.38 09/16/2024 Food and Beverage Undisputed 01/23/2026 1086203019 CMS
Bayer Healthcare Pharmaceuticals Inc. $23.01 09/18/2024 Food and Beverage Undisputed 01/23/2026 1086134730 CMS
Bayer Healthcare Pharmaceuticals Inc. $21.65 10/07/2024 Food and Beverage Undisputed 01/23/2026 1086257442 CMS
Bayer Healthcare Pharmaceuticals Inc. $87.70 12/07/2024 Food and Beverage Undisputed 01/23/2026 1086166612 CMS
Bayer Healthcare Pharmaceuticals Inc. $23.86 12/11/2024 Food and Beverage Undisputed 01/23/2026 1086222516 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $25.06 04/10/2024 Food and Beverage Undisputed 01/23/2026 1118000359 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $22.41 08/14/2024 Food and Beverage Undisputed 01/23/2026 1118000357 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $123.43 10/10/2024 Food and Beverage Undisputed 01/23/2026 1118000361 CMS
Merck Sharp & Dohme LLC $21.78 11/05/2024 Food and Beverage Undisputed 01/23/2026 1141727228 CMS
Novartis Pharmaceuticals Corporation $21.30 02/13/2024 Food and Beverage Undisputed 01/23/2026 1087136102 CMS
Novartis Pharmaceuticals Corporation $14.97 09/25/2024 Food and Beverage Undisputed 01/23/2026 1087136134 CMS
Otsuka Pharmaceutical Development & Commercialization, Inc. $47.00 03/06/2024 Food and Beverage Undisputed 01/23/2026 1118838605 CMS
Seqirus USA Inc $18.75 10/22/2024 Food and Beverage Undisputed 01/23/2026 1125629552 CMS
Travere Therapeutics, Inc. $15.89 09/26/2024 Food and Beverage Undisputed 01/23/2026 1149914358 CMS
Travere Therapeutics, Inc. $20.06 09/26/2024 Food and Beverage Undisputed 01/23/2026 1149914362 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, 2021, 2022, 2023, 2024
Source files
Dataset page · Bulk file · PY2018 , PY2019 , PY2021 , PY2022 , PY2023 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv

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