Healthcare organizations Clover Health Investments and AngMar Management Services are notifying more than 250,000 people that their information was stolen in separate data breaches.
Jersey City, New Jersey-based Clover Health Investments was hacked in early July, after attackers used social engineering to compromise three non-managerial health plan employee accounts.
The incident resulted in the theft of personally identifiable information (PII) and protected health information (PHI), the company said in an SEC filing in July.
The potentially affected information included names, dates of birth, insurance identifiers, and account identification numbers, the company revealed.
In mid-September, Clover Health Investments told the US Department of Health and Human Services (HHS) that 138,677 people were affected. HHS added the company to its data breaches portal last week.
Mansfield, Texas-based AngMar Management Services identified suspicious activity on its systems in mid-July and confirmed in early September that hackers stole patient PII and PHI.
AngMar Management Services provides business operations, administration, and support network management for home health and hospice care providers.