The rhysida ransomware group listed Hematology Oncology Consultants on its data leak site on 2025-10-17. Country: US Sector: Healthcare Domains named: hocpc.com Claim as published on the leak site: Hematology Oncology Consultants Michigan Hematology Oncology is a private practice dedicated to providing the highest level of quality care in a healing environment for the mind, body and spirit of patients dealing with cancer and blood disorders.