Marlon A. Guerrero, MD, FACS

Associate Professor, Surgery
Associate Professor, Otolaryngology
Vice Chair of Quality and Performance

Marlon Guerrero, MD, FACS, is an associate professor in the Division of General Surgery, Section of Surgical Oncology and vice chair of quality and performance in the Department of Surgery at the University of Arizona.

Dr. Guerrero received his BS in Biology from California State University, East Bay after graduating cum laude. He earned his medical degree from Meharry Medical College in Nashville, TN, where he was elected into the prestigious Alpha Omega Alpha Honor Medical Society. He completed his general surgery residency at the Michael E. DeBakey Department of Surgery at the Baylor College of Medicine in Houston, TX. There, he was awarded the St. Luke’s Hospital Resident of the Year award in 2005.

Dr. Guerrero became interested in treating endocrine tumors and disorders after his training at the MD Anderson Cancer Center. He entered a prestigious endocrine surgery fellowship at the University of California, San Francisco under the mentorship of the legendary Dr. Orlo H. Clark. He joined the Department of Surgery at the University of Arizona in July 2009 as director of endocrine surgery and holds many adjunct positions within the College of Medicine.

Clinical Specialities

Endocrine Surgery, Thyroid Nodules, Thyroid Cancer, Thyroid Neoplasms, Goiters, Hyperthyroidism, Parathyroid Diseases, Neuroendocrine Tumors of the Pancreas, Pheochromocytomas, Cushing's Syndrome, Hyperaldosteronism, Adrenal Tumors, Adrenal Cortical Cancer, Gastrointestinal Neuroendocrine (Carcinoid) Tumors

Research Interests

Pathogenesis of adrenocortical carcinoma
Clinical and molecular factors associated with advanced thyroid cancer
Optimizing the surgical approach in recurrent thyroid cancer
Study of thyroid carcinogenesis, advanced thyroid cancers
Studying systemic effects of hypercalcemia seen in primary hyperparathyroidism

Education and Training

Degrees:
MD: Meharry Medical College, 2003
BS, Biology: California State University East Bay
Residency:
Baylor Medical College, General Surgery, 2003-2008
Fellowship:
University of California San Francisco, Endocrine Surgery, 2008-2009
Board Certification(s):
American Association of Endocrine Surgeons Certificate
American Board of Surgery - Diplomate, Endocrine Surgery
Honors and Awards:
  • Resident of the Year Award, St. Luke’s Hospital, 2005