Your AI medical-bill auditor

Stop overpaying
your medical bills.

Snap a photo of any medical bill and an AI auditor reads it line by line — finding the overcharges, duplicate charges, and billing-code errors hospitals bury in it. Then it drafts the dispute letter for you.

Free first scan · HIPAA-minded · We never sell your data

Snap a photo

AI line-item audit

Ready-to-send dispute letter

Audit complete

14 findings · ER visit

Questionable charges found

$5,358

on a $4,200 emergency-room bill

CT scan billed 27.8× Medicare rate

Above fair benchmark · 70450

$2,940

Unbundled lab panel (NCCI)

Should be one code, not three

$612

Duplicate CBC charge

Same test, billed twice · 85025

$188

Generate my dispute letter →

~80%

of medical bills are estimated to contain errorsstudies estimate

$220B

in medical debt Americans carrystudies estimate

to find out if your bill is wrongyour first scan is free

The problem

The system isn't built for you to win.

Medical billing is one of the most complex pricing systems on earth — and almost nobody on the patient's side can read it. A bill arrives, the codes are opaque, the prices have no anchor, and the safest-feeling thing to do is just pay it. That's exactly the problem.

~80%

of medical bills are estimated to contain at least one error — from simple keystrokes to costly miscoding.studies estimate

~$220B

is the medical debt Americans are estimated to carry, much of it built on bills no one ever checked.studies estimate

simple, trustworthy ways for a patient to know whether a bill is fair — until now.that's the gap we fill

How it works

Three steps. A few minutes.

You don't need to understand medical billing. That's the whole point — the AI does. You just hand it the paperwork.

Upload your bill & EOB

Snap a photo or upload your itemized bill and your insurer's Explanation of Benefits. The more detail, the sharper the audit. No itemized bill yet? We'll help you request one.

AI audits every line

Each charge is checked against real medical-coding rules and fair-price benchmarks — CPT/HCPCS/ICD logic, NCCI bundling edits, and Medicare reference rates — to flag what doesn't add up.

Get findings + a dispute letter

You get a plain-English breakdown of every questionable charge and a ready-to-send dispute letter citing the specific issue — so you can push back with confidence, not guesswork.

What it catches

The overcharges hiding in plain sight.

These are the patterns that quietly inflate medical bills every day. They look like normal line items. They're not.

Upcoding

When a routine visit or procedure is billed under a more expensive code than what actually happened — a 5-minute check billed like a major workup.

Coding error

Duplicate charges

The same test, supply, or service billed twice — a CBC drawn once but charged two times, an item counted on both the room fee and a line item.

Billed twice

Unbundling

Charges that should be billed together as one code, split apart into several to inflate the total — flagged against NCCI bundling rules.

NCCI edit

Charges above fair rates

Line items priced far beyond Medicare and benchmark rates for the same service — the kind of markup you can't see without something to compare against.

Above benchmark

Balance billing & No Surprises Act

When you're billed for the gap an out-of-network provider charged in a situation the federal No Surprises Act protects you from — and you may not owe it at all.

Your rights

Phantom & mismatched charges

Services that never happened, supplies you never received, or codes that don't match your diagnosis — the line items that simply shouldn't be there.

Doesn't add up

A sample result

One ER bill. 14 findings. $5,358 in questionable charges.

Here's what an audit actually looks like. A $4,200 emergency-room bill goes in. Minutes later, every flagged charge comes back with the reason it was flagged, the rule it broke, and an estimate of what it should have been.

Then the app drafts a dispute letter citing each finding — ready for you to review, sign, and send.

Illustrative example for demonstration. Not a real patient bill — figures shown are representative of the kinds of findings the audit engine produces, not a guarantee of results.

Emergency Room Visit

Itemized bill · 31 line items

Audited

$4,200

Billed

Findings

$5,358

Questionable

CT head, billed 27.8× Medicare rate

Above fair benchmark · CPT 70450

$2,940

Lab panel unbundled into 3 codes

NCCI bundling edit · should be 1 code

$612

Duplicate CBC with differential

Same test billed twice · CPT 85025

$188

ER level upcoded (99285 vs. 99283)

Acuity exceeds documented visit

$498

Out-of-network balance bill

No Surprises Act may apply

$1,120

+ 9 more findings · dispute letter ready

Download letter

Whose side we're on

On the patient's side. Always.

We make money when you save money — never from the hospital, the insurer, or your data. That alignment is the whole product.

HIPAA-minded by design

Your bills hold sensitive health information, so we treat them that way — built from day one with health-data privacy and a strict data-handling firewall in mind.

We never sell your data

Your information is used to audit your bills and advocate for you — nothing else. We don't sell it, and we're not paid by anyone whose bill we're checking.

Information & advocacy, not legal advice

Medical Bill Sentinel is a billing-audit and advocacy tool. It helps you understand your bill and draft disputes — it is not a law firm and does not provide legal advice.

Pricing

You only pay when you save.

Find out if your bill is wrong for free. Pay nothing unless we help you find real savings — or choose a flat monthly plan if you'd rather.

Free Scan

The viral hook. Find out if your bill is wrong, no card required.

Your first full bill audit, free
Plain-English findings summary
Estimated savings total

Scan a bill free

The questions everyone asks.

Is this legal?

Yes. You have every right to receive an itemized bill, to question charges, and to dispute errors. Medical Bill Sentinel is an information and advocacy tool that helps you understand your own bills and draft your own disputes. It is not a law firm, does not provide legal advice, and does not act as a debt collector.

Do you see my medical data?

To audit a bill, the app reads the billing details on it — which can include health information. We handle that data with HIPAA-minded privacy practices and a strict internal firewall, use it only to audit your bills and advocate for you, and never sell it. You stay in control of your documents.

What if I have insurance?

Insurance is exactly when this matters most. Errors slip through even after insurance pays, and the patient portion is often where overcharges land. Uploading your Explanation of Benefits alongside the bill lets the audit cross-check what was billed, what insurance covered, and what you actually owe.

How much can I actually save?

It depends entirely on your bill — some are clean, others are riddled with errors. There's no guarantee of savings. The free scan tells you, up front and at no cost, whether your bill has questionable charges worth disputing, so you can decide whether to move forward.

Do you negotiate or just write the letter?

At its core, the app finds the issues and drafts a ready-to-send dispute letter citing each one, so you can push back yourself. Guided negotiation support is on the roadmap for members. You're always in control of what gets sent and to whom.

When can I use it?

Medical Bill Sentinel is in active development. Join the early-access list and you'll be among the first invited to scan a bill free when we open the doors.

Find out if your bill is wrong — free.

Join the early-access list. We'll invite you to scan your first medical bill at no cost the moment we launch.

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Stop overpaying your medical bills.