An implantable tongue sensor/stimulator device is disclosed for sensing and monitoring physiological parameters and providing a reactive stimulation to a patient. The device includes a main upper disc member carrying one or more micro-biomedical sensors for sensing multiple physiological parameters and one or more stimulation electrodes for creating stimulating sensations in the tongue, a lower tongue plate member that includes a battery for powering the device circuitry and a locking mechanism for locking the device in place when it is implanted, and an intermediate assembly including a central tongue rod member and conducting tubes for penetrating a tongue and connecting the upper disc with the lower disc. The device contains a wireless transmitter for transmitting data from the device.