AdaptHealth, LLC: 4,115,802 individuals, Aug 2026.

OCR classifies the incident as a hacking or IT incident, with the breached information held in a network server. Hacking/IT Incident is the type recorded on 229 of the 340 Pennsylvania filings (67%) and on 86% of all filings submitted in 2026. Network Server is the most common location in the state, appearing on 51% of Pennsylvania filings.

No business associate is recorded on the filing; 34% of Pennsylvania filings do involve one. At 4,115,802 individuals the breach is 993 times the Pennsylvania median filing of 4,145 and 1,029 times the national median of 4,000 across all 7,927 filings. It is one of 152 filings on the register of one million or more individuals.

As of 10 September 2026 the case is listed by HHS OCR under Cases Currently Under Investigation. OCR has not published a closing summary, so this page is limited to the fields on the filing itself; the archive entry that follows a closed investigation usually adds a short account of what was exposed and what the entity did afterwards.

Pennsylvania's breach notification statute (73 Pa. Stat. 2301 et seq.) requires notice to affected residents without unreasonable delay. Its attorney general threshold: more than 500 Pennsylvania residents. The HIPAA Breach Notification Rule ran alongside it: notice to affected individuals and to HHS without unreasonable delay and no later than 60 days after discovery, which is the clock that put this filing on the portal.

Multiplying 4,115,802 individuals by IBM's $160 customer-PII cost per record (Cost of a Data Breach 2025, the figure the site's calculator uses) gives a modelled $659M; the 2026 edition's $192 gives $790M. Both are modelled estimates with the method shown, not costs disclosed by AdaptHealth, LLC. Because the filing is above the roughly 100,000-record range in which the per-record figure is reliable, the result is an upper bound, not an estimate: fixed costs are spread across far more records at this scale.