{
 "id": "cms:4ff7c618-4e40-483a-b390-c8a58c94fa15",
 "slug": "medicare-quarterly-part-d-spending-by-drug",
 "source": "data.cms.gov",
 "title": "Medicare Quarterly Part D Spending by Drug",
 "summary": "Preliminary quarterly Medicare Part D spending by drug that runs past the latest year in the annual Part D Spending by Drug file.",
 "description": "The Medicare Quarterly Part D Spending by Drug dataset presents information on spending for drugs prescribed to Medicare beneficiaries enrolled in Part D by physicians and other healthcare providers. Drugs prescribed in the Medicare Part D program are drugs patients generally administer themselves. It also includes spending information for manufacturer(s) of the drugs as well as consumer-friendly information of drug uses and clinical indications. Drug spending metrics for Part D drugs are based on the gross drug cost, which represents total spending for the prescription claim, including Medicare, plan, and beneficiary payments. The Part D spending metrics do not reflect any manufacturers’ rebates or other price concessions as CMS is prohibited from publicly disclosing such information. This dataset reports preliminary data that goes beyond the latest date available in the annual Medicare Part D Spending by Drug dataset. The data are updated each quarter and may change with each new release due to claims lag. Once an entire year of data is available with a sufficient run-out period, that data will move out of the preliminary quarterly dataset and into the annual Medicare Part D Spending by Drug dataset. Due to the preliminary nature of the quarterly dataset, we advise using caution when comparing between the annual and quarterly datasets.",
 "aliases": [
  "quarterly part d spending",
  "recent drug spending"
 ],
 "keywords": [
  "Medicare",
  "Medicare Prescription Drug",
  "Medical Suppliers & Equipment",
  "Drugs"
 ],
 "themes": [
  "Medicare"
 ],
 "topics": [
  "drugs",
  "spending-utilization",
  "other-facilities"
 ],
 "category": "summary-statistics-on-use-and-payments",
 "publisher": "Office of Enterprise Data and Analytics (OEDA)",
 "contact": "IPAG_Data_Products@cms.hhs.gov",
 "landing_url": "https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-quarterly-part-d-spending-by-drug",
 "csv_url": "https://data.cms.gov/sites/default/files/2026-07/QDD_PTD_RQ2603_P01_V10_DQT2601_20260708.csv",
 "api_url": "https://data.cms.gov/data-api/v1/dataset/4ff7c618-4e40-483a-b390-c8a58c94fa15/data",
 "api_kind": "cms-data-api",
 "preview_url": "https://data.cms.gov/data-api/v1/dataset/4ff7c618-4e40-483a-b390-c8a58c94fa15/data?size=10",
 "dictionary_url": "https://data.cms.gov/resources/medicare-quarterly-part-d-spending-by-drug-data-dictionary",
 "dictionary_kind": "page",
 "methodology_urls": [
  "https://data.cms.gov/resources/medicare-quarterly-part-d-spending-by-drug-methodology"
 ],
 "state_column": null,
 "row_count": 27748,
 "posted": "2026-07-23",
 "modified": "2026-07-23",
 "period_start": "2026-01-01",
 "period_end": "2026-03-31",
 "latest_period": "2026-01-01 to 2026-03-31",
 "cadence": "quarterly",
 "next_update": null,
 "versions": [
  {
   "label": "2026-01-01",
   "uuid": "4ff7c618-4e40-483a-b390-c8a58c94fa15",
   "posted": "2026-07-23",
   "period_start": "2026-01-01",
   "period_end": "2026-03-31"
  }
 ],
 "columns": [
  {
   "name": "Brnd_Name",
   "label": "Brand Name",
   "type": "string",
   "meaning": "The name of the drug filled. This includes both brand names (drugs that have a trademarked name) and generic names (drugs that do not have a trademarked name).",
   "source": "cms-dictionary"
  },
  {
   "name": "Gnrc_Name",
   "label": "Generic Name",
   "type": "string",
   "meaning": "A term referring to the chemical ingredient of a drug rather than the trademarked brand name under which the drug is sold.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Mftr",
   "label": "Number of Manufacturers",
   "type": "number",
   "meaning": "Number of manufacturers for each drug.",
   "source": "cms-dictionary"
  },
  {
   "name": "Mftr_Name",
   "label": "Manufacturer",
   "type": "string",
   "meaning": "Name of the manufacturer of the drug.The \"Overall\" rows present the totals for the drug across all manufacturers.",
   "source": "cms-dictionary"
  },
  {
   "name": "Year",
   "label": "Year",
   "type": "string",
   "meaning": "Identifies the data quarter(s) and year of the Part D claims included. Quarter 1 is for months January through March; Quarter 2 is for months April through June; Quarter 3 is for months July through September; and Quarter 4 is for months October through December.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Benes",
   "label": "Total Beneficiaries",
   "type": "number",
   "meaning": "Number of Part D beneficiaries utilizing the drug.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Clms",
   "label": "Total Claims",
   "type": "number",
   "meaning": "Number of prescription fills for each drug. Includes original prescriptions and refills.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Spndng",
   "label": "Total Spending",
   "type": "number",
   "meaning": "Aggregate drug spending for the Medicare Part D program.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spnd_Per_Bene",
   "label": "Average Spending Per Beneficiary",
   "type": "number",
   "meaning": "Total Part D drug spending divided by the number of unique beneficiaries utilizing the drug.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spnd_Per_Clm",
   "label": "Average Total Spending Per Claim",
   "type": "number",
   "meaning": "Total Part D drug spending divided by the number of prescription fills.",
   "source": "cms-dictionary"
  },
  {
   "name": "Drug_Uses",
   "label": "Drug Uses",
   "type": "string",
   "meaning": "A description of some of the most common ways in which the drug can be used for treatment. This may not be comprehensive of all possible uses for the drug.",
   "source": "cms-dictionary"
  }
 ],
 "caveats": [
  "Preliminary data that can change each quarter because of claims lag. CMS advises caution when comparing it with the annual file.",
  "Like the annual file, it does not reflect rebates."
 ],
 "curated": true,
 "license": "https://www.usa.gov/government-works",
 "detail_key": "4ff7c618-4e40-483a-b390-c8a58c94fa15|2026-07-23",
 "checked": "2026-10-25",
 "source_name": "data.cms.gov"
}