- Founding Partner of Endocrine Associates of Dallas P.A.
- Past Clinical Associate Professor of Medicine University of Texas Southwestern Medical School
- Past President American Association of Clinical Endocrinologists (AACE)
- Past President American College of Endocrinology
- Endocrinology training Massachusetts General Hospital
- Founding Chairman of the AACE Corporate Advisory Board
- Chairman of first 6 AACE “Thyroid Awareness Month”
- Inventor of “The Neck Check”
- Past Chairman of Diabetes Guidelines Task Force AACE
- Past Chairman of Thyroid Guidelines Task Force AACE
- Chairman of Diabetes Initiatives “Patient First Campaign” AACE
- Past President of North Texas American Diabetes Association
- Past Board Member of the Texas Institute for Health Policy Research
- Past Member of the Texas Area Osteoporosis Board