The Internet of medical things (IoMT) is attracting research attention because of its wide range of applications in the healthcare industry. To securely send gathered sensitive healthcare data to the server nodes, smart healthcare sensors, and IoT-enabled medical devices to exchange data and cooperate with other smart devices. Security and privacy concerns make it difficult to safely collect and transmit healthcare data to Fog and cloud servers. IoT applications in the medical sector are examined in this study using a Fog-assisted Secure Healthcare Data Transmission (F-SHDT) system. This system helps raise the level of medical care services in health facilities.