Dr. Melissa Mao is a board-certified UCI Health surgeon who specializes in the surgical treatment of diseases and disorders of the thyroid, parathyroid and adrenal glands.

Melissa L. Mao, MD


Endocrine Surgery, General Surgery

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  • American Board of Surgery, Surgery
  • English
Medical School
Temple University School of Medicine
St. Luke's University Health NetworkGeneral Surgery
University of Miami Miller School of Medicine/Jackson Memorial Medical CenterEndocrine Surgery
Professional Positions
  • Assistant Professor — Department of Surgery, UCI School of Medicine
  • Director — Endocrine Surgery Services, UCI Health
  • Member — American Association of Endocrine Surgeons
  • Member — American College of Surgeons
  • Member — Alpha Omega Alpha Honor Medical Society
  • Rho Chi Pharmacy Honor Society-Beta Tau Chapter
More Information

Dr. Melissa L. Mao is a board-certified UCI Health endocrine surgeon who specializes in minimally invasive thyroid and parathyroid surgery and disorders of the adrenal glands.

Her clinical interests include thyroid cancer, hyperparathyroidism, adrenal gland tumors, thyroid nodules and goiters, Graves' disease, Cushing's disease, Conn's syndrome and pheochromocytoma, which is a rare type of adrenal gland tumor.

Mao earned her medical degree at Temple University School of Medicine in Philadelphia, Pa. She completed a residency in general surgery at St. Luke's University Hospital in Bethlehem, Pa., followed by a fellowship in endocrine surgery with the University of Miami Leonard Miller School of Medicine program at Jackson Memorial Hospital in Miami, Fla.

She has contributed to numerous research papers in published journals and has made presentations at many national conferences.

Mao sees patients in Orange, Tustin and Laguna Hills.

UCI Health Chao Family Comprehensive Cancer Center
101 The City Drive South, Building 23
Orange, CA 92868
Phone: 714-456-8000
Fax: 855-211-3729
UCI Health — Laguna Hills
23961 Calle de la Magdalena, Suite 200
Laguna Hills, CA 92653
Phone: 949-238-4100
Fax: 866-251-1363
UCI Health — Tustin
1451 Irvine Blvd.
Tustin, CA 92780
Phone: 714-838-8408
Fax: 714-838-0029