David Balis, M.D., is a Professor in the Department of Internal Medicine at UT Southwestern Medical Center and a member of its Division of General Internal Medicine. He is the Director of the UT Southwestern Nicotine Cessation Program.

Dr. Balis earned his medical degree at UT Southwestern Medical School, where he also completed a residency in internal medicine.

Certified by the American Board of Internal Medicine, he joined the UT Southwestern faculty in 1995.

He is a member of the American College of Physicians and the American Medical Association.

Personal Note

Married with two children, Dr. Balis is a competitive triathelete.


Medical School
Royal College of Surgeons in Ireland (2004)
Beaumont Hospital (2005), Internal Medicine
Mater Misericordiae University Hospital (2007), Internal Medicine
Mayo Clinic College of Medicine and Science (2009), Internal Medicine
Mayo Clinic College of Medicine and Science (2012), Endocrinology, Diabetes, Metabolism & Nutrition
UT Southwestern Medical Center (2013), Nutrition & Metabolic Diseases

Research Interest

  • Effects of weight loss on metabolism
  • Metabolic complications of obesity
  • Post-bariatric care
  • Weight Management


Featured Publications LegendFeatured Publications

Immunosuppression and Clostridium difficile Infection Risk in Metabolic and Bariatric Surgery Patients.
Morales-Marroquin E, Xie L, Uppuluri M, Almandoz JP, Cruz-Muñoz N, Messiah SE, J Am Coll Surg 2021 May
Type 2 Diabetes and HbA1c Predict All-Cause Post-Metabolic and Bariatric Surgery Hospital Readmission.
Morales-Marroquin E, Xie L, Meneghini L, de la Cruz-Muñoz N, Almandoz JP, Mathew SM, Schneider BE, Messiah SE, Obesity (Silver Spring) 2021 01 29 1 71-78
Impact of bariatric surgery on cerebral vascular reactivity and cognitive function: a non-randomized pilot study.
Tucker WJ, Thomas BP, Puzziferri N, Samuel TJ, Zaha VG, Lingvay I, Almandoz J, Wang J, Gonzales EA, Brothers RM, Nelson MD, Pilot Feasibility Stud 2020 6 21
Metabolic syndrome remission after Roux-en-Y gastric bypass or sleeve gastrectomy.
Nassour I, Almandoz JP, Adams-Huet B, Kukreja S, Puzziferri N Diabetes Metab Syndr Obes 2017 10 393-402


Featured Books Legend Featured Books

Honors & Awards

  • Captain Massey-Miles Prize in Obstetrics & Gynecology
    Medical School Graduation (2004)
  • Mahon Medal in Medicine
    Medical School Graduation (2004)
  • Rueben Harvey Prize from the Royal College of Physicians and Surgeons, Dublin, Ireland
    Graduating first in medical school class (2004)
  • Wheeler Medal in Surgery
    Medical School Graduation (2004)