From ae3f9cb1b9cb552349ddde2e319ba44b09a4d075 Mon Sep 17 00:00:00 2001
From: hemichaeli <50115096+hemichaeli@users.noreply.github.com>
Date: Sun, 28 Jun 2026 00:52:41 +0300
Subject: [PATCH] Add OOPI - Open Out-of-Pocket Pricing Index to Health Systems
 and Policy

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 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 5512362..81eea5f 100644
--- a/README.md
+++ b/README.md
@@ -290,6 +290,7 @@ A curated list of awesome healthcare datasets for machine learning, research, an
 7.  [Optum Clinformatics Data Mart](https://www.optum.com/business/life-sciences/real-world-data.html) - Commercial claims and EMR data. (Requires purchase, academic subscriptions available).
 8. [National Inpatient Sample (NIS)](https://www.hcup-us.ahrq.gov/nisoverview.jsp) - Largest all-payer inpatient care database in the US. (Available for purchase.)
 9. [National Ambulatory Medical Care Survey (NAMCS) and National Hospital Ambulatory Medical Care Survey (NHAMCS)](https://www.cdc.gov/nchs/ahcd/index.htm)- Provides data on ambulatory care visits.
+10. [OOPI - Open Out-of-Pocket Pricing Index](https://www.rxpricetracker.com/data) - Monthly cross-source US cash drug prices across CVS, GoodRx, Costco, Cost Plus Drugs, Amazon Pharmacy, SingleCare. 109 molecules. CC-BY-4.0. Mirrors: [HuggingFace](https://huggingface.co/datasets/pharmax-ai/oopi-pricing-index), [Zenodo DOI 10.5281/zenodo.20969232](https://zenodo.org/record/20969232), [Kaggle](https://www.kaggle.com/datasets/zackkmichael/oopi-us-cash-drug-prices).
 
 ## Biomedical Literature