Data Breach Notifications

Entity Information

  • Type of Organization: Healthcare
  • Entity Name: Prospect Medical Holdings, Inc.
  • Street Address: 3415 S. Sepulveda Blvd.
  • City: Los Angeles
  • State, or Country if outside the US: CA
  • Zip Code: 90034

Submitted By

  • Name: Sara Goldstein
  • Title: Partner
  • Firm name (if different than entity): Baker & Hostetler LLP
  • Telephone Number: 215-564-1572
  • Email Address:
  • Relationship to entity whose information was compromised: Outside Counsel

Breach Information

  • Total number of persons affected (including residents): 190492
  • Total number of Maine residents affected: 67
  • If the number of Maine residents exceeds 1,000, have the consumer reporting agencies been notified:
  • Date(s) Breach Occured: 07/31/2023 - 08/03/2023
  • Date Breach Discovered: 09/13/2023
  • Description of the Breach:
    • External system breach (hacking)
  • Information Acquired - Name or other personal identifier in combination with: Social Security Number

Notification and Protection Services

  • Type of Notification: Written
  • Date(s) of consumer notification: 09/29/2023
  • Copy of notice to affected Maine residents: Prospect - Maine Attachment.pdf
  • Date of any previous (within 12 months) breach notifications: N/A
  • Were identity theft protection services offered: Yes
  • If yes, please provide the duration, the provider of the service and a brief description of the service: One year; IDX; Credit monitoring and identity theft protection services.