Connect to the data

Medicare Part B drug pricing from CMS — payment limits, ASP, HCPCS codes and NDC crosswalks. Four ways in, depending on what you are building.

MCP server

Ask in plain language from Claude — "what does Medicare pay for infliximab?" — instead of writing code. Best for analysts and ad-hoc work.

https://www.medpharmdata.com/mcp
  • search_hcpcs_codes — drug name to HCPCS code
  • get_payment_limit — payment limit and ASP
  • get_ndcs_for_hcpcs — NDCs and billing units
  • list_quarters — what data is loaded
Setup guide Sign in with your account — no key to paste

REST API

Pull pricing into a billing system, a spreadsheet job or a warehouse. Best for anything scheduled or repeated.

https://www.medpharmdata.com/api/v1/
  • One code, or up to 100 per request
  • Current quarter, a pinned quarter, or full history
  • Authenticated with an issued API key
API documentation

The website

Search a drug, read its pricing history quarter by quarter, see the NDC crosswalk and leave comments for your team. No setup.

Create an account

Exports

Pricing history as CSV from any drug page, and quarter-over-quarter change reports as Excel. Best for a one-off analysis you want to hand to someone else.

Available from the drug and CMS pages once signed in.

Which should I use?

If you want to…Use
Ask questions conversationally, explore, sanity-check a number MCP server
Refresh a fee schedule on a schedule REST API — batch endpoint
Reproduce what a price was in a past quarter REST API — ?quarter=
Look one drug up by hand The website

Reference

TopicWhere
Authentication — API keys and headers Docs › Authentication
Endpoints, parameters and error codes Docs › Endpoints
How to read the ASP — it is an estimate, and biosimilars differ Docs › Reading the numbers
Rate limits Docs › Limits and errors
Which quarters are loaded https://www.medpharmdata.com/api/v1/quarters/
Before you build on the ASP: CMS publishes the payment limit, not the ASP. Every ASP figure here is MedPharmData's estimate, and biosimilars are calculated differently from ordinary drugs. Each response says which basis was used — read Reading the numbers before you reconcile against anything.

Need an API key, a higher rate limit, or something the API does not cover yet? Get in touch.