On January 1, 2021, every hospital in America became legally required to publish its prices. Not estimates. Not "contact us for a quote." Actual, machine-readable prices for 300 shoppable services, plus a consumer-friendly display.
Five years later, the files exist — millions of them, terabytes of JSON and CSV sitting on hospital websites. The question is what they actually tell us. The answer: more than the industry wanted you to know, and less than patients deserve. But for the first time in the history of American healthcare, the chargemaster is public. That changes everything downstream.
The rule, and why enforcement finally got teeth
The Hospital Price Transparency Rule came out of a 2019 executive order and took effect January 1, 2021. Compliance in the early years was, charitably, aspirational. CMS could fine noncompliant hospitals, but the penalty — $300 per day — was a rounding error for a health system doing $2 billion in revenue. Many hospitals posted files so incomplete or so obfuscated that researchers called them "compliant in name only." One widely cited early finding: files with prices listed as "N/A," or encoded in formats no machine could read.
That changed in 2024. CMS finalized a rule scaling penalties to hospital size: $300 per day for the smallest hospitals, $10 per bed per day for mid-size facilities, and up to $5,500 per day for hospitals over 550 beds — real money, potentially $2 million a year. CMS also began requiring standardized formats and, crucially, started naming noncompliant hospitals publicly and issuing warning letters with deadlines.
The effect was measurable. Turquoise Health — the price-transparency company that has become the de facto scorekeeper of the rule, rating hospital compliance across thousands of facilities — documented steady improvement: by 2025, the large majority of hospitals posted machine-readable files, up dramatically from the early years. But Turquoise's researchers also kept finding the same caveats: posted does not mean complete, complete does not mean accurate, and accurate does not mean the price a patient will actually pay.
What the files reveal
For researchers, the data has been a gold mine even in its imperfect state. The files expose, for the first time at national scale, the negotiated rates between hospitals and individual insurers — the secret contracts that determine what your insurance "discount" actually is. Three findings stand out:
First, the spread within a single hospital is staggering. The same procedure at the same facility can carry a cash price, five different insurer-negotiated rates, and a chargemaster "list price" that relates to none of them. It is common to find a 3x to 10x spread between the lowest and highest contracted rate for identical services in the same building.
Second, the chargemaster is fiction. List prices routinely run 3–5x what any payer actually pays. They persist because they anchor negotiations and, in some cases, determine what uninsured patients are billed before discounts.
Third, cash prices are often the best prices. Researchers and journalists mining the files have repeatedly found hospitals whose self-pay cash price undercuts every insurer's negotiated rate — a finding that upends the basic premise of insurance as a discount mechanism. If your deductible is $5,000 and the cash price of your MRI is $400 while your insurer's "negotiated" rate is $1,200, the insurance is not saving you money. It is costing you $800.
The compliance gap that remains
Here is the honest assessment as of 2026: the transparency regime works for researchers, employers, and startups building price-comparison tools. It does not yet work for the patient scheduling surgery next Tuesday. The files are hard to find, harder to parse, and disconnected from the actual out-of-pocket estimate a patient needs — which depends on their specific plan, deductible status, and network tier.
There is also an accuracy problem nobody has fully solved. Journalists cross-checking posted prices against actual bills have found mismatches — rates in the file that don't match what the hospital billed. CMS has acknowledged the gap and signaled interest in validating posted prices against real claims data, but systematic auditing at national scale remains aspirational. A posted price you can't trust is only marginally better than a secret one.
State attorneys general have begun filling the enforcement vacuum with their own inquiries, and employer coalitions — the actual buyers of much of this care — have started writing transparency compliance into their network contracts. The pressure is compounding from every direction at once: federal penalties, state scrutiny, employer demands, and public ratings.
The next frontier is enforcement of accuracy, not just posting. CMS has signaled interest in validating that posted prices match billed prices, and state attorneys general have begun their own inquiries. Turquoise Health's ongoing ratings keep public pressure on laggards. The direction is one-way: prices that were secret for a century are now data, and data gets used.
The quotable truth of the whole experiment: American hospitals were required to publish their prices, and the most shocking thing the data revealed was that many of them didn't seem to know what their prices were.
SurgeryRates.com exists because transparency data shouldn't require a data-science degree. What surgery actually costs — compiled, compared, and written for the patient, not the actuary.