John David Carmichael, MD

Professor of Clinical Medicine

Co-Chief, Division of Endocrinology and Diabetes: Vice Chair of Clinical Operation and Strategy

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Overview

Dr. John Carmichael is the Co-Chief of the Division of Endocrinology and Diabetes and the Vice Chair of the Department of Medicine for Clinical Operations and Strategy at the Keck School of Medicine of USC. He also serves as the Associate Chief Medical Informatics Officer for Keck Medicine of USC and is the Co-Director of the USC Pituitary Center.

Dr. Carmichael earned a BA in Biomedical Ethics from Brown University and completed his medical degree at the Virginia Commonwealth University/Medical College of Virginia. He trained in Internal Medicine at Virginia Mason Medical Center in Seattle, Washington, followed by a fellowship in Endocrinology, Diabetes, and Metabolism at New York University. He also received specialized training in Translational Research at UCLA.

Dr. Carmichael has over 20 years of experience conducting clinical trials focused on the diagnosis and treatment of pituitary disorders, including acromegaly, Cushing’s disease, and prolactinomas. He has published extensively in leading journals such as The Journal of Clinical Endocrinology and Metabolism, Pituitary, and Clinical Endocrinology.

Before joining USC in 2014, Dr. Carmichael worked at NYU and Cedars-Sinai Medical Center, focusing on clinical care and research in pituitary disease. At USC, he is an Associate Professor of Clinical Medicine and a leader in the education of medical students, residents, and fellows. He is also actively involved in professional organizations, including the Endocrine Society, where he serves on the Endocrine Board Review Committee for the pituitary section, the Pituitary Society, and the American Association of Clinical Endocrinologists.

Dr. Carmichael sees patients at the Neurosurgery Suites in HC2 on the USC Health Sciences Campus, providing specialized care for individuals with pituitary and other endocrine disorders.

Awards

  • NIH Clinical Research Feasibility Funds (CReFF): Growth Hormone Feedback in Patients with Acromegaly, Type 2 Diabetes Mellitus, and Healthy Adults, 2008
     – 2009
  • NIH Loan Repayment Program: Growth Hormone Feedback in Patients with Acromegaly, Type 2 Diabetes Mellitus, and Healthy Adults, 2009
     – 2013

Publications

  • Incidence and predictors of complications, readmission, and reoperation following endoscopic transsphenoidal surgery for pituitary adenomas. J Neurosurg. 2026 Jul 24; 1.. View in PubMed
  • Associations Between Transsphenoidal Surgery and Neuropsychiatric Disorders for Patients With Cushing’s Disease. Neurosurgery. 2026 Apr 07.. View in PubMed
  • Associations of surgical menopause and hormone replacement therapy with meningioma development. J Neurooncol. 2026 Mar 12; 177(1).. View in PubMed
  • Postoperative days 1 and 2 morning cortisol levels as predictors of long-term secondary adrenal insufficiency following pituitary adenoma surgery. J Neurosurg. 2026 Jul 01; 145(1):59-67.. View in PubMed
  • Utility of standardized T2-weighted MRI intensity ratio for prediction of pituitary macroadenoma consistency. J Neurosurg. 2026 Apr 01; 144(4):937-946.. View in PubMed
  • Sex and Age Differences in Transcription Factor and Hormonal Immunostaining in Patients With Nonfunctioning Pituitary Adenomas. Oper Neurosurg. 2026 Jan 15.. View in PubMed
  • Intraoperative Cerebrospinal Fluid Leaks During Endoscopic Endonasal Tumor Resection are Associated With Higher Emesis Rates and Greater Opioid Use in the Acute Postoperative Period. Oper Neurosurg. 2026 Jun 01; 30(6):915-921.. View in PubMed
  • The use of generative artificial intelligence-based dictation in a neurosurgical practice: a pilot study. Neurosurg Focus. 2025 07 01; 59(1):E8.. View in PubMed
  • Associations Between Tumor Characteristics, Postoperative Complications, and Early Versus Late Discharge After Endoscopic Endonasal Pituitary Adenoma Resection. Oper Neurosurg. 2026 Feb 01; 30(2):193-200.. View in PubMed
  • Predictive factors for early-onset hyponatremia following endoscopic transsphenoidal surgery for nonfunctioning pituitary adenomas. J Neurosurg. 2025 Aug 01; 143(2):406-412.. View in PubMed