Horizon House

Horizon House operates as a mental healthcare provider, delivering behavioral health services to individuals seeking treatment for psychiatric and emotional conditions. The organization focuses on offering outpatient counseling, therapy, and psychiatric support to adults and adolescents in its service area. Its primary market consists of residents of the Philadelphia region, where it maintains facilities to provide accessible mental health care. Horizon House emphasizes evidence‑based practices and aims to improve clients’ psychological well‑being through individualized care plans. By concentrating on mental health, the organization fills a critical niche within the broader healthcare landscape of its community.

In March 2021, Horizon House experienced a ransomware attack that compromised its IT systems and resulted in the unauthorized access and exfiltration of data belonging to over 27,000 individuals. The breach exposed a wide range of sensitive information, including names, Social Security numbers, financial details, medical diagnoses, treatment records, and health insurance data, underscoring the volume of personal health information the organization manages. This incident highlights Horizon House’s role as a custodian of substantial protected health information and reflects the scale of its patient base. As a Philadelphia‑based entity, the organization’s specialization in mental health services distinguishes it from general medical providers, positioning it within the behavioral health sector. No explicit information about parent companies or ownership structures is provided in the available sources.