photo of Bernadette Collazo

John Matlock, MD


  • Residency: University of Iowa Hospitals and Clinics
  • Medical School: Baylor College of Medicine, Houston, Texas
  • Undergraduate: University of Texas at Austin, Austin, Texas

About Dr. Matlock

Dr. Matlock is a long-standing member of the San Antonio internal medicine community, practicing here since 1983.

He has seen many changes affecting healthcare delivery and the way it has affected patients. Fortunately, along with his dedicated staff, he has been able to continue offering comprehensive adult care in a warm and caring environment. He enjoys working with patients to prevent future health problems, as well as working with patients who already have long-standing or complex health problems.

When he is not caring for his patients, Dr. Matlock enjoys spending time at his ranch, woodworking and bicycling.

Special Interests

  • Diabetes Management
  • Hypertension Management
  • Cholesterol Management
  • Osteoarthritis Treatment
  • Cardiac Treatment
  • Heart Disease Management
  • Geriatrics