Our team-based approach to patient care involves collaboration and coordination between our highly qualified psychiatrists and physician assistants. Watch the bio videos below to get to know your Expert Care team!

Charles Sweet, MD, MPH

Divyansu Patel, MD

M. Dennis Kinoti, MPAS, PA-C

Ashley Brannon, MPAS, PA-C

Kara Cantu, MPAS, PA-C

Keith Campbell, MPAS, PA-C


Diego Santa-Ana, PA-C

Diego Santa-Ana is a physician assistant (PA-C) nationally certified by the National Commission for Certification of Physician Assistants. Diego graduated from Texas A&M University of Kingsville with a Bachelor of Science in Biomedical Sciences and a Bachelor of Arts in Psychology. He then earned his Masters of Science in Physician Assistant Studies at The University of Texas Rio Grande Valley.

Diego grew up in the RGV but is very much excited to call Austin, Texas his new home. Psychiatry has always been fascinating to Diego and he is greatly honored to join the Specialty Clinic of Austin team.

Apart from Psychiatry, Diego enjoys the outdoors, listening to live music and has a passion for cooking.