Notice of a Data Security Incident at ECHN Medical Group

Prospect Medical Holdings, Inc. (“Prospect Medical”) is committed to protecting the confidentiality and security of the information we maintain. Prospect Medical experienced a data security incident that was first identified on August 1, 2023 which involved information pertaining to certain patients. This notice explains the incident, measures that have been taken, and some steps patients can take in response.

Through our ongoing investigation, we determined that an unauthorized party gained access to our IT network between the dates of July 31, 2023 and August 3, 2023. While in our IT network, the unauthorized party accessed and/or acquired files that contain information pertaining to certain patients of ECHN Medical Group. The information varied by patient but could have included names, addresses, dates of birth, diagnosis, lab results, medications, and other treatment information, health insurance information, provider / facility name, and/or dates of treatment.

On November 13, 2023, Prospect Medical began mailing letters to patients whose information may have been involved in the incident. Prospect Medical established a dedicated, toll-free incident response line to answer questions that individuals may have. If you believe your information was involved and have any questions about this incident, please call 888-979-0012, Monday through Friday, 9:00 am – 9:00 pm, Eastern Time (excluding major U.S. holidays).

For patients whose information may have been involved in the incident, we recommend reviewing the statements you receive from your healthcare providers and contacting the relevant provider immediately if you see services that you did not receive.

We take this incident very seriously and sincerely regret any concern this may cause. To help prevent something like this from happening again, we have implemented additional safeguards and technical security measures to further protect and monitor our systems.