The Hospital Association of Southern California (HASC) is a not-for-profit regional trade association founded in 1923. It represents hospitals and health systems in six Southern California counties, focusing on advancing their interests and improving community health. HASC offers services like political advocacy, education, and operational tools to enhance hospital performance. Its target audience includes member hospitals and health systems. The unique selling proposition is its comprehensive support system, combining local representation with state and federal advocacy, making it a vital partner for hospitals navigating complex healthcare environments[1][2][4].