Was your lab required to report under PAMA this year?

1,572 independent clinical labs already clear PAMA’s Medicare billing floor in public CY2024 CMS data. Enter your NPI or lab name and we compare your own Medicare Clinical Laboratory billing against the $12,500 low expenditure threshold, the same public data CMS itself built the rule on. PAMAwatch is a free PAMA reporting exposure checker for independent clinical labs.

Quick answer

PAMA’s low expenditure threshold is public and specific: CMS counts a lab in once it gets at least $12,500 of its Medicare revenue from the CLFS in a data collection period.
Enter your lab’s NPI or name and the check reads your own CY2024 Medicare Clinical Laboratory billing against that threshold, no account, about a minute.
Clearing the floor is not a verdict: real applicable-laboratory status also needs more than half of a lab’s Medicare revenue from the CLFS and PFS combined, a share CMS does not publish and this checker cannot see.

We read your CY2024 Medicare billing

CY2024 Medicare Clinical Laboratory billing
CLIA facility match
Where your billing sits against the floor

1,572 independent clinical labs indexed, CY2024 Medicare billing data. No account, nothing stored. Method and sources.

Combined CY2024 Medicare Clinical Laboratory billing, this list: $4.6 billion
Median annual billing per lab: $505,095
Labs above our doubled-threshold proxy: 1,572 (100.0%)
States represented: 51

This is not a guess. It is your own CY2024 Medicare billing against a public dollar figure.

PAMA’s private-payor-rate reporting requirement does not turn on how big your lab feels or what a billing newsletter said last quarter. It turns on one dollar figure CMS already has on record for your NPI, compared against one threshold CMS already published. This checker shows you that comparison. It does not, and cannot, tell you your actual reporting status: see the honest limit below.

The floor is public and specific

CMS: “Meets or exceeds the low expenditure threshold: This means that you get at least $12,500 of your Medicare revenues from the CLFS in a data collection period.” That number, not a feeling about lab size, is the first gate.

The window already closed once

The most recent PAMA data reporting period ran May 1 to July 31, 2026. CMS has published no filing-cure, correction, or voluntary-disclosure path for a lab that missed it. The next cycle opens in 2029.

The part we cannot see

Real applicable-laboratory status also requires more than half of a lab’s Medicare revenue to come from the CLFS and PFS combined. CMS does not publish that share for any single NPI. Only your own books can answer it.

The PAMA Exposure Index

1,572 independent clinical labs already clear PAMA’s Medicare billing floor in public CY2024 CMS data. Whether each one was actually required to report is a question only its own revenue mix can answer.

These 1,572 labs are every independent, Clinical-Laboratory-typed NPI whose CY2024 Medicare billing clears this checker’s doubled-threshold proxy for PAMA’s $12,500 low expenditure threshold. See the exact filter and sources. The source is CMS’s own public Medicare billing data, cross-referenced against 14 confirmed CLIA facility matches, self-reported and republished on CMS’s own schedule. Our PAMA reporting guides cover that CLIA cross-reference and the rest of the 2026 reporting cycle in more depth.

Combined CY2024 Medicare Clinical Laboratory billing, this list: $4.6 billion
Median annual billing per lab: $505,095
Labs above our doubled-threshold proxy: 1,572 (100.0%)
Labs with a confirmed CLIA facility match: 14 (0.9%)
States represented: 51
State with the most labs on this list: CA

Top states by lab count on this list.

CA242
TX211
FL145
IL78
NJ68
NY56
MD45
PA45

Check whether your own lab is on this list

How the check works

Enter your NPI or lab name
The same 10-digit identifier CMS already uses to identify your billing, or just your lab’s name. No account, no email required to see your result.
We read your CY2024 Medicare billing
Your own Clinical Laboratory Medicare payment total, as CMS itself published it, compared against PAMA’s public $12,500 low expenditure threshold.
Get your exposure read, not a verdict
Above the floor or below it, how you compare to other independent labs in your state, and the one question only your own revenue mix can answer.

Questions, answered

Does this tell me if I was required to report?

No, and that is the most important thing to understand before you use it. This checker reads your lab’s own public CY2024 Medicare Clinical Laboratory billing against CMS’s published $12,500 low expenditure threshold. Real applicable-laboratory status also requires that more than half of your Medicare revenue come from the CLFS and PFS combined, a fact CMS does not publish and this checker cannot see. Clearing the floor here means the question is worth asking your own billing team, not that you were required to file.

Is this legal or financial advice?

No. This tool reads a lab’s own public CMS billing data against a published dollar threshold and reports the comparison. It does not review your lab’s actual revenue mix, does not replace counsel or a compliance consultant, and makes no promise about your lab’s actual PAMA status. Talk to whoever handles your Medicare billing before making a decision.

Where does the data come from?

CMS’s own public Medicare Physician & Other Practitioners by Provider dataset (data.cms.gov), filtered to the Clinical Laboratory provider type, cross-referenced where possible against CMS’s CLIA Provider of Services file. Your check shows which of those two sources matched your lab. See /method for dataset ids and the exact filter.

My lab isn’t showing up. Why?

A few reasons: your CY2024 Medicare Clinical Laboratory billing may sit below the roughly $25,000 annual figure this checker is built from, your NPI may bill under a different provider type, your lab may have been excluded by a hospital or chain name-keyword filter that is not a legal-ownership test, or the CMS data simply has not caught up with a recent change. None of that means you are “not exposed”, only that your lab is not one of the roughly 1,500 clearest cases this checker currently covers.

Do you store what I search?

No account, no database, no login. The lookup runs against a static dataset built ahead of time; the only thing recorded is an anonymous, aggregate analytics event, the same as any other pageview on this site.

Is there a paid product here?

Not yet. This is a free research tool, nothing is for sale on this site today.

Who is behind this?

PAMAwatch is built and operated by Neige AI, Inc., an American software company based in San Francisco. It reads public CMS billing data against a public threshold and is not legal advice, and it does not review your lab’s actual revenue mix. Questions go to hello@pamawatch.com and reach the Neige AI team directly.

See where your lab’s own billing sits before the next reporting cycle

One NPI or lab name, about a minute, no account required.

Check my lab now Method and sources