Surgeon Samuel E. "Rhett" Long, III, MD, FACS, wearing a white coat and smiling in front of a white backdrop.

Samuel E. “Rhett” Long, III, MD, FACS


Loyola University Stritch School of Medicine, MD

Samford University, BS


Internship, Baylor College of Medicine

Residency, General Surgery, Dell Medical School, The University of Texas at Austin

Fellowship, Endocrine Surgery, University of Michigan

Biography and Education

Clinical Biography

Samuel E. “Rhett” Long, III, MD, FACS, is a board-certified general surgeon and fellowship-trained endocrine surgeon in UT Health Austin’s Surgical Oncology Clinic. He specializes in thyroid disease and cancer, hyperparathyroidism (primary, secondary, and tertiary), and conditions of the adrenal gland, including primary aldosteronism, pheochromocytoma, and benign and malignant tumors. Additionally, Dr. Long is an assistant professor in the Dell Medical School Department of Surgery and Perioperative Care.

Dr. Long earned his bachelor’s degree from Samford University and his medical degree from Loyola University Stritch School of Medicine. He completed an internship in general surgery at Baylor College of Medicine in the Michael E. DeBakey Department of Surgery, a residency in general surgery at The University of Texas at Austin Dell Medical School, and a fellowship in endocrine surgery at the University of Michigan.

Dr. Long is a member of the American Association of Endocrine Surgeons, the American College of Surgeons, the American Medical Association, and the Travis County Medical Society.


  • Thyroid disease and cancer
  • Hyperparathyroidism (primary, secondary, tertiary)
  • Adrenal nodules and cancer

Board Certification

  • American Board of Surgery, General Surgery

Awards & Honors

  • Administrative Chief Resident, Dell Medical School
  • Austin’s Top Doctors 2022, 2023
  • Raleigh R. Ross Texas Surgical Society Scholar
  • Resident of the Year, Dell Medical School



  • UT Health Austin Clinics
    Health Transformation Building
    1601 Trinity Street, Bldg. A
    Austin, TX 78712
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