The qilin ransomware group listed mmmbs.net on its data leak site on 2025-03-29. Country: US Sector: Healthcare Domains named: mmmbs.net Claim as published on the leak site: All data of this company will be available for download on 08.04.2025. Mid Michigan Medical Billing Service, Inc. is a full spectrum revenue cycle management company offering Medical Billing, Medical Transcription, Records Management, and Con ...