Internal Medicine/Pediatrics

Our Providers Bios

John D. McCormick

John D. McCormick, MD, FACP, FAAP

Dr. McCormick joined the USF faculty in 2008 after six years in private practice. In addition to being a medical doctor, Dr. McCormick is a registered pharmacist, having majored in pharmacy as an undergraduate student where he graduated at the top of his class. Subsequently, he completed an internship and residency in internal medicine and pediatrics at USF, including a year as chief resident. Dr. McCormick is a fellow with the American Academy of Pediatrics (FAAP) and with the American College of Physicians (FACP).

Dr. McCormick has received several awards for his teaching and clinical skills. He is currently the Associate Program Director of the Internal Medicine/Pediatrics Training Program at USF, where he is actively engaged in training residents and medical students.

Hugo Narvarte

Hugo Narvarte, MD

Internal Medicine - Pediatrics

Dr. Hugo Narvarte completed his undergraduate training at Duke University in 1996, and obtained his MD degree from the University of South Florida in 2000. He then moved to Houston, Texas for residency training in Internal Medicine & Pediatrics at Baylor College of Medicine. He moved back to Tampa and joined the USF faculty in 2005. His patient care interests include primary care in both general pediatrics and general internal medicine.

Denise Edwards

Denise Edwards, MD


Dr. Edwards is certified in both Internal Medicine and Pediatrics. She received her medical degree from the University of South Florida and continued on with her dual training in both specialties. Since joining the faculty at USF, she has had a primary interest in weight management for both children and adults and founded the Healthy Weight Clinic in 2007. This clinic is a multidisciplinary approach to eating disorders as well as obesity. Her other areas of interest are the metabolic syndrome as well as bariatric surgery. She is involved with the pre-operative assessment for patients undergoing bariatric surgery at Tampa General.

Brian Knox

Brian Knox, MD

Clinic Attending
Assistant Professor of Internal Medicine & Pediatrics

Dr. Knox completed his undergraduate training at University of Kentucky and received a BS in Biology and a BA in Chemistry in 2002. Following that he attended the University of Kentucky College of Medicine and received his MD degree in 2006. He graduated with distinction and was inducted into AOA (Alpha Omega Alpha Medical Honor Society) during medical school. He then moved to Tampa in 2006, did his residency training in Internal Medicine & Pediatrics, and completed residency in June 2010. His patient care interests include primary care in both general pediatrics, and general internal medicine. Other patient care interests include wellness and weight management. He is originally from Winchester KY, where his family still resides.

Nathan Brinn

Nathan Brinn, MD

Internal Medicine - Pediatrics

Dr. Brinn earned his BS, with Phi Beta Kappa honors, from the University of Tennessee at Knoxville, and he graduated from the University of Tennessee Health Science Center in 2001.  He completed his residency in internal medicine/pediatrics at the University Health Systems of Eastern North Carolina, where he served as chief resident, graduating as the Med-Peds Resident of the Year in 2005. He joined the Brody School of Medicine at East Carolina University in 2006 where he served as Chief of Division of Med/Peds, Clinical Director of Howell’s Hospital for Chronic Children, and Director of the Med-Peds residency program. Dr. Brinn has received several teaching awards during his career.  He is board-certified in internal medicine and pediatrics. He has special interests in the care of patients with chronic disease, transitioning children with complex conditions and special health care needs into adulthood, and med-peds resident education.

Mary Mitchell

Mary Mitchell, ARNP

Internal Medicine - Pediatrics

Mary Mitchell completed her Master's Degree in Nursing at the University of South Florida. She is currently a student in the Doctorate of Nursing Practice at USF. She is a dedicated nurse practitioner in the Med-Peds outpatient clinics, serving adult and pediatric patients. Her patient care interests include periodic health examinations, health promotion and screening; diagnosis and treatment of minor episodic illness; treating chronic disease diagnosis and management; and case management of children and adults with multiple co-morbidities.

Dayhanara Pena, ARNP

Internal Medicine - Pediatrics