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Check a bill

Use BillKarma in ChatGPT or Claude

Add BillKarma to your AI assistant and ask about a hospital bill in plain words. It answers with what Medicare pays for the same code, the hospital’s billing office and a request letter when you need one.

No sign-in or API key. Nothing you send through it is stored.

Add it to ChatGPT

  1. Open Settings, then Apps & Connectors, then Advanced, and turn on Developer mode. It’s available on paid plans.
  2. Back in Apps & Connectors, choose Create.
  3. Name it BillKarma, paste the connector URL, and choose No authentication.
  4. In a chat, add BillKarma from the + menu, then ask your question.

Add it to Claude

  1. Open Settings, then Connectors.
  2. Choose Add custom connector.
  3. Name it BillKarma, paste the connector URL and choose Add.
  4. In a chat, turn BillKarma on from the + menu under Connectors.

On Team and Enterprise plans, an owner adds it in organization settings first. In Claude Code: claude mcp add --transport http billkarma https://billkarma.app/mcp

Things to ask

  • “My ER bill charged $4,500 for code 99285. Is that too high?”
  • “What’s the billing phone number for Tampa General Hospital?”
  • “I only have a summary bill. Write me a request for the itemized one.”
  • “What would BillKarma charge to dispute a $12,000 bill?”

What it can do

  • check_hospital_charge
    Compare a hospital charge for one billing code (CPT or HCPCS) with what Medicare pays for it, physician and hospital parts combined.
  • find_hospital_billing_office
    Find a U.S. hospital's address and main phone, whether it's nonprofit, and how its list prices compare with Medicare.
  • write_itemized_bill_request
    Write a letter asking a hospital for an itemized bill with every billing code, citing the HIPAA right of access (30-day response). Ask the person for the fields first.
  • get_dispute_price
    BillKarma's flat fee to dispute a hospital bill of a given size, and what it includes.

Every tool only reads data. To check a whole bill, upload it at billkarma.app/scan. Medicare rates are a benchmark, not what hospitals must charge, and nothing here is legal advice.