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Mark N. Villanueva, M.D.

Hospital Internal Medicine

B.A., University of Dallas, Irving, Texas, 2003.
M.D., University of Texas Health Sciences Center at Houston Medical School, Houston, Texas, 2007.

Residency/Fellowship: Loyola University Chicago Stritch School of Medicine, Maywood, Ill. (internal medicine), 2007-2010; Vanguard Health West Suburban Medical Center, Oak Park, Ill. (chief resident, internal medicine), 2010-2011.

Certified by the American Board of Internal Medicine.

Banner University Medical Center-Phoenix, Phoenix, Ariz., medical director, Division of Hospital Medicine, 2013-2018; section chief, Division of Hospital Medicine, 2018; Director of Strategic Alignment, Department of Medicine, 2019-2020

Appointed to the staff of Mayo Clinic in Arizona, 2020; medical director, Observation Medicine, 2024-present; physician advisor, 2024-present.