Contact Us
Tandem has an extensive library of materials to help you get the most out of your Tandem insulin pump.
Learn which continuous glucose monitoring (CGM) issues are specific to Dexcom or Tandem Diabetes Care, and which company to contact.
Tandem Diabetes Care offers a variety of ways to get the help you need with your insulin pump, on your schedule, including 24/7 technical support.
Because we work with people who are living with type 1 diabetes, our mission is personal. That connection helps fuel our passion and drives our commitment to serving the diabetes community.
Who to Contact for CGM Support
Dexcom CGM Sensor
Issues include physical damage (e.g., broken, detached, missing sensor wire), no initial calibration, sensor failure during warmup, new sensor inserted but “No Restarts” (Alert 25) displayed, inaccurate CGM values, the calibration prompt will not clear, early sensor expiration, sensor failure after warmup, the pump displays “---“, the pump displays “Wait up to 3hrs”, the Dexcom Mobile App displays “Sensor Error”, or calibration errors. Please report the issue online or contact one of the support departments at Dexcom.
Dexcom Applicator
Issues include physical damage (e.g., broken needle, cannula, or needle retraction issues), deployment issue, or painful insertion. Please report the issue online or contact one of the support departments at Dexcom.
Dexcom CGM Transmitter
Issues include pairing failure on the Dexcom Mobile App, unintended once per day calibration mode, physical damage, latch issues, difficulty inserting or removing transmitter, low transmitter battery alert, transmitter failed, overheating, or shocking. Please report the issue online or contact one of the support department at Dexcom.
Tandem Insulin Pump with Dexcom CGM
Issues include a loss of connection only on the pump or only the pump displays an invalid Transmitter ID (Alert 29). Please contact the Technical Support Team (833-509-3598) at Tandem Diabetes Care. If the Dexcom Mobile App is also not receiving data, then Dexcom will handle these issues instead. Please report the issue online or contact one of the support departments at Dexcom.
Customer Support
We put as much effort into standing behind our products as we do into designing them. Based in the United States, our bilingual support team is staffed by highly trained, enthusiastic representatives.