United Medical Doctors

United Medical Doctors was compromised in a ransomware attack attributed to insomnia in March 2026. The organization, operating in the Healthcare sector in United States, was added to the group's data leak site as part of an extortion campaign.

insomnia operates as a financially motivated ransomware-as-a-service (RaaS) operation, exfiltrating sensitive data and threatening public disclosure to pressure victims into paying ransom demands.

United Medical Doctors (UMD) is an independent multi‑specialty medical‑surgical group with 70+ Southern California locations and 40+ specialties. They focus on high‑quality, compassionate care, patient satisfaction, process improvement, outpatient surgery, clinical research.