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DexCom, Inc. is a medical device company, which engages in the design, development, and commercialization of glucose monitoring systems for ambulatory use by people with diabetes. Its products include Dexcom G6, Dexcom G7, Dexcom Stelo, Dexcom Share, Dexcom Real-Time API, and Dexcom ONE. The company was founded by John F. Burd on May 13, 1999 and is headquartered in San Diego, CA.