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

DAVID S OYER

Allopathic & Osteopathic Physicians Internal Medicine Endocrinology, Diabetes & Metabolism

NPI
1134226467
CMS profile
232354
Location
CHICAGO, IL

General Payments · PY2019–2025

$101,262.58

  • Reported across 277 records
  • CMS publication 2026-06-30

Latest program year · PY2025

$567.06

23 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

PY2025 · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $427.75 19
Education $139.31 4

By paying entity

PY2025 · sorted by reported total

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $57,007.99 97
PY2020 $15,639.64 22
PY2021 $10,843.06 46
PY2022 $15,805.39 30
PY2023 $513.24 28
PY2024 $886.20 31
PY2025 $567.06 23

Payment records · PY2025 (23)

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. $32.82 05/20/2025 Food and Beverage Undisputed 06/30/2026 1202920396 CMS
Amgen Inc. $17.95 01/28/2025 Food and Beverage Undisputed 06/30/2026 1228424633 CMS
Amgen Inc. $21.69 03/17/2025 Food and Beverage Undisputed 06/30/2026 1228424635 CMS
Bayer Healthcare Pharmaceuticals Inc. $16.50 01/24/2025 Food and Beverage Undisputed 06/30/2026 1225680940 CMS
Bayer Healthcare Pharmaceuticals Inc. $23.36 08/09/2025 Food and Beverage Undisputed 06/30/2026 1225680942 CMS
Exact Sciences Corporation $24.19 03/14/2025 Food and Beverage Undisputed 06/30/2026 1235626165 CMS
Exact Sciences Corporation $30.83 07/08/2025 Food and Beverage Undisputed 06/30/2026 1235626168 CMS
Insulet Corporation $24.03 03/06/2025 Food and Beverage Undisputed 06/30/2026 1207072155 CMS
Insulet Corporation $23.01 03/27/2025 Food and Beverage Undisputed 06/30/2026 1207075718 CMS
Lilly USA, LLC $20.00 05/12/2025 Food and Beverage Undisputed 06/30/2026 1186593942 CMS
Mannkind Corporation $42.50 01/07/2025 Education Undisputed 06/30/2026 1250880692 CMS
Novo Nordisk Inc $24.75 02/04/2025 Food and Beverage Undisputed 06/30/2026 1188496748 CMS
Novo Nordisk Inc $2.58 02/04/2025 Food and Beverage Undisputed 06/30/2026 1188827760 CMS
Novo Nordisk Inc $8.10 03/27/2025 Food and Beverage Undisputed 06/30/2026 1189042632 CMS
Novo Nordisk Inc $32.27 04/21/2025 Education Undisputed 06/30/2026 1188688733 CMS
Novo Nordisk Inc $10.56 05/19/2025 Food and Beverage Undisputed 06/30/2026 1188326921 CMS
Novo Nordisk Inc $6.62 05/28/2025 Food and Beverage Undisputed 06/30/2026 1188954969 CMS
Novo Nordisk Inc $102.60 06/20/2025 Food and Beverage Undisputed 06/30/2026 1188264395 CMS
Novo Nordisk Inc $10.01 07/23/2025 Food and Beverage Undisputed 06/30/2026 1188474802 CMS
Novo Nordisk Inc $32.27 08/27/2025 Education Undisputed 06/30/2026 1188665293 CMS
Novo Nordisk Inc $3.22 09/18/2025 Food and Beverage Undisputed 06/30/2026 1188263747 CMS
Novo Nordisk Inc $32.27 10/13/2025 Education Undisputed 06/30/2026 1189064735 CMS
Xeris Pharmaceuticals, Inc. $24.93 08/26/2025 Food and Beverage Undisputed 06/30/2026 1250154582 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

One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.

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.