Medical monitoring technologies are integrated with wireless networks to wirelessly send signals from a monitoring device to a cellular telephone or other personal electronic device (PED). A sensor is placed inside or on the patient's body. Information from the monitoring sensor is transmitted to a nearby and/or remote PED. The information transmitted to the PED may then be displayed, processed, stored or forwarded to another location if needed. The monitoring system of the present invention monitors a variety of bodily processes, but preferably measures vital signals such as heart rate, blood pressure, respiration rates, etc. The present invention may also be used to monitor glucose levels in diabetic users. Further, the device may be used as an alert system to alert the patient and third parties when a patient experiences an adverse medical condition.