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CMS spending by drug & NADAC

Market share and prices

Who is winning a drug class, and what does it cost? Medicare and Medicaid spending per brand per year, each drug's share of its class, and what pharmacies pay per unit, from public CMS data.

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Medicare spending

By drug

How to read this. Spending is what Medicare Part D (pharmacy), Medicare Part B (drugs given in a clinic) and Medicaid paid for each product, from CMS's Spending by Drug files: five annual years, plus the quarterly Part D file for the last full year and the latest quarter. Share is a drug's part of the class's Medicare spending in that period. Unbranded products are listed under the ingredient name and marked generic.

What it is not. Spending is gross, before manufacturer rebates, which for some brands are large. Only public programs are covered (no commercial insurance or cash sales), so shares are not US market shares. NADAC is what pharmacies pay to acquire a drug, not the list price, the patient's cost or the net price. Data: CMS Medicare Part D, Part B and Medicaid Spending by Drug; CMS NADAC via data.medicaid.gov.