A Digital Health Tool for Insulin Titration (DHIT) Individuals With Type 2 Diabetes: A Prospective Outcomes Study With a Retrospective Control Group

Inclusion Criteria: \- Prospective cohort: The participants will be patients with type 2 diabetes mellitus who are not at goal on their current dose of prescribed basal insulin (e.g. Lantus, Toujeo, Levemir, Tresiba, or Basaglar). Participants shall be age 21 or older, prescribed basal insulin within the past 18 months, own a compatible mobile phone, able to receive/make calls and read messages on their phone. There is no predefined gender or ethnic group. Participants should be generally healthy and not expected to be hospitalized for surgery or other medical care during the study period. \- Retrospective cohort: This will be a chart review. Participants will be matched to the prospective cohort for age, gender and baseline A1C. Patients should have been prescribed one of the basal insulins above. Exclusion Criteria: \- Prospective cohort: Participants with stage 4 or 5 kidney disease, active malignancies, variable glucocorticoid doses during the study period, severe visual impairment, or dementia will be excluded. Also, participants prescribed rapid-acting or premixed insulins (any insulin not on the above list) will be excluded. \- Retrospective cohort: Same as above.