Time in Range Advisory Group | American Diabetes Association


The Time in Range Advisory Group defines the Time in Range program parameters, subject matter, and format development. The group is comprised of senior endocrinologists and health care professionals from U.S.-based institutions. 

Current Members

Thomas W. Martens, MD, FACP International Diabetes Center (Chair)​

​Natalie Bellini, MSN, FNP-BC, CDE R&B Medical Group 

Sean Oser MD, MPH University of Colorado School of Medicine​

Amanda Sheehan, NP Joslin Diabetes Center​

Diana Isaacs, PharmD, BCPS, BC-ADM, CDE Cleveland Clinic ​

Chlodys Johnstone, PA-C, CDCES UK Health Care