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

SAMER HASSAN

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI
1033421284
CMS profile
2537787
Location
OKLAHOMA CITY, OK

General Payments · PY2018–2024

$1,798.20

  • Reported across 105 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$234.83

11 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 $202.37 9
Education $32.46 2

By paying entity

PY2024 · sorted by reported total

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $531.64 43
PY2019 $192.68 11
PY2020 $43.63 3
PY2021 $35.85 2
PY2022 $233.08 8
PY2023 $526.49 27
PY2024 $234.83 11

Payment records · PY2024 (11)

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
AstraZeneca Pharmaceuticals LP $17.79 08/13/2024 Food and Beverage Undisputed 01/23/2026 1105559334 CMS
E.R. Squibb & Sons, L.L.C. $17.94 02/28/2024 Food and Beverage Undisputed 01/23/2026 1101749404 CMS
Genentech USA, Inc. $17.21 10/07/2024 Food and Beverage Undisputed 01/23/2026 1133105411 CMS
GENZYME CORPORATION $39.94 03/27/2024 Food and Beverage Undisputed 01/23/2026 1139834624 CMS
Gilead Sciences, Inc. $16.90 05/01/2024 Food and Beverage Undisputed 01/23/2026 1133802440 CMS
Ipsen Biopharmaceuticals, Inc $16.23 04/29/2024 Education Undisputed 01/23/2026 1091979874 CMS
Ipsen Biopharmaceuticals, Inc $16.23 07/25/2024 Education Undisputed 01/23/2026 1091979876 CMS
Novartis Pharmaceuticals Corporation $18.87 03/04/2024 Food and Beverage Undisputed 01/23/2026 1086908431 CMS
Novartis Pharmaceuticals Corporation $33.48 09/30/2024 Food and Beverage Undisputed 01/23/2026 1086908439 CMS
PFIZER INC. $23.38 02/07/2024 Food and Beverage Undisputed 01/23/2026 1131192225 CMS
SOBI, INC $16.86 02/12/2024 Food and Beverage Undisputed 01/23/2026 1141417716 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

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.