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Pediatric Endocrinology, Endocrinology | More

Professor Emeritus of Medicine Director, Endocrinology Laboratory

A clinically integrated network of physicians and providers employed by UChicago Medicine who offer care in inpatient, community, ambulatory, acute care or extended care settings.

Samuel Refetoff, MD, specializes in adult and pediatric endocrinology, with expertise in congenital and inherited thyroid diseases.

His laboratory work focuses on identifying genetic errors that cause defects in thyroid hormone regulation, synthesis, transport and action. Dr. Refetoff has described several genetic diseases of the thyroid, including resistance to thyroid hormone (Refetoff’s syndrome). He has one of the largest referral centers for genetic thyroid disease in the world.

His research work is supported by a MERIT award from the National Institutes of Health, which has resulted in more than 480 publications. He serves on the editorial board of five endocrinology journals.

Medical Education

  • McGill University Faculty of Medicine


  • Notre-Dame Hospital


  • Good Samaritan Hospital; Lahey Hospital and Medical Center


  • Peter Bent Brigham Hospital

Memberships & Medical Societies

  • American Society for Clinical Investigation
  • Royal College of Physicians of Ireland
  • Pediatric Endocrine Society
  • European Thyroid Association
  • Canadian Medical Association
  • Bulgarian Academy of Sciences and Arts
  • Belgian Royal Academy of Medicine
  • Association of American Physicians
  • American Thyroid Association
  • American Society of Human Genetics
  • Endocrine Society
  • Aetna POS
  • Aetna HMO
  • Aetna PPO
  • BCBS Blue Precision HMO
  • Cigna HMO
  • Cigna POS
  • Cigna PPO
  • CountyCare
  • Coventry Health Plan PPO
  • Great West PPO
  • Illinicare*
  • Medicare
  • Multiplan PPO
  • United Choice / Choice Plus
  • United Options (PPO)
  • United Select (HMO & EPO)
  • United W500 Emergent Wrap
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Duchossois Center for Advanced Medicine (DCAM) - Hyde Park

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At a Glance

Practicing Since1963

Languages Spoken

  • English
  • Bulgarian
  • Italian
  • French
  • Spanish