DexCom, Inc.is a lifornia based medical device company, engages in the design and development of continuous glucose monitoring systems for diabetic people in the United States. It develops two continuous glucose monitoring systems, including short-term system with a sensor that could be inserted by a patient and used continuously for three days; and long-term system with a sensor that could be implanted by a physician. The company’s sensors wirelessly transmit the patient’s blood glucose, or blood sugar and levels to a receiver, which enables the patient to view blood glucose information. DexCom was founded in 1999 and is headquartered in lifornia.