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Michael J. McPhaul, MD

Michael J. McPhaul, MD

Quest Diagnostics Nichols Institute
Medical Director, Endocrine Division

Building B, Room 124B
33608 Ortega Highway
San Juan Capistrano, CA 92675

Member Since: 2012

Member Status: Fellow


Professor of Medicine, Emory University and Director, Diabetes and Endocrinology, Grady Health System



Clinical Interest(s)

disorders of the pituitary and hypothalamus

Research Interest(s)

  • androgen receptor in human prostate cancer
  • Genetic control of androgen receptor expression
  • Androgen metabolism and its effects on androgen action
  • Testosterone
  • pituitary adenomas

Current / Former SSCI Roles


About Michael J. McPhaul, MD

Dr. McPhaul joined Quest Diagnostics Nichols Institute as Endocrinology Medical Director in June 2012. Prior to his recruitment to Quest, Dr. McPhaul was Associate Dean for Medical Student Research and Professor of Internal Medicine in the Division of Endocrinology and Metabolism at UT Southwestern Medical Center. During his 25 year tenure at Southwestern, his investigative career was clinical and translational in nature, leading to an international reputation in the fields of androgen action, diseases of the pituitary, and clinical research. He has published extensively, including more than 100 peer-reviewed manuscripts and 23 reviews and book chapters.

Since joining Quest as Medical Director for Endocrinology and Metabolism, Dr. McPhaul has focused primarily on the development of tools to assist in the comprehensive care of patients with prediabetes, the metabolic syndrome, and diabetes mellitus, and the development of new diagnostic tests to permit the early identification of patients with diabetic complications.

Dr. McPhaul is an active member of a number of professional organizations, including AACE, the Endocrine Society, the American Diabetes Association, and the American Federation for Medical Research (AFMR). He serves as the Editor-in-Chief for 2 journals published by the AFMR, the Journal of Investigative Medicine and the Journal of Investigative Medicine High Impact Case Reports.

Dr. McPhaul has been a member of the Southern Society for Clinical Investigation since 2012. He presently serves as a member of Council, is Co-Chairman of the Publications Committee and a member of the Website Committee.


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