South Austin Medical Clinic Patient Portal. Health (5 days ago) Health (5 days ago) South Austin Medical Center Patient Portal.Health (5 days ago) South Austin Medical Clinic Doctors, Locations, Services . Health (1 days ago) South Austin Medical Clinic Doctors, Locations, Services. In 1966, south Austin medical clinic found by Henry Dittert, MD. There were five physicians at that time and the ....