20 reviews of Diabetes & Metabolism Specialists "So very disappointed with the staff in this office, especially the scheduling person named Katie. ... San Antonio, TX. 115. 6. 1. 1/7/2018. Great staff, fantastic doctors, and no wait time. I totally dig this place. ... actual patient. Useful 6. Funny. Cool. Gail K. San Antonio, TX. 0. 2..