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Our Faculty

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Caring for Families, Training for Leaders

The Centre for Family Medicine is proud to offer a comprehensive team of skilled and compassionate physicians, board certified in various specialties, including family medicine, pediatrics and geriatrics.

As part of our commitment to extraordinary patient care, the Centre for Family Medicine is focused on preparing competent physicians to serve the community in Central Florida and beyond. It is for this reason that the Centre is home to Florida Hospital's Family Medicine Residency Program, which has successfully trained hundreds of Central Florida physicians over the past 40 years. As a result of this progressive training program, our physicians are continuously involved in the latest research, education and leading-edge treatment options and have access to advanced technology, including a high-tech simulation training lab which allows physicians to maintain excellence in all aspects of patient care.

Together, our physicians form a partnership that allows us to provide you and your family with the best and most comprehensive care. It is through this spirit of collaboration that we stand firm in our commitment to serve the health care needs of our patients with a holistic approach to heal the mind, body and spirit.

Alexander Fishberg, MD

Dr. Alexander Fishberg is the Associate Program Director of the Family Medicine Residency Program. He received his medical degree at University of South Florida and completed his residency at Hinsdale Hospital near Chicago. He has been with Florida Hospital since 2006 and has a special interest in gastroenterology and obstetrics.

Serena Gui, PhD

Dr. Serena Gui completed her PhD in Counseling Psychology from Andrews University in 1984. She joined Florida Hospital Family Medicine Residency in 1997 and is the Associate Director of Behavior Medicine. Prior to coming to Florida Hospital, Dr. Gui was in private practice as well as teaching graduate psychology students in the Metro Atlanta area.

George Guthrie, MD, MPH, CDE, CNS

Dr. George Guthrie received his medical degree from Loma Linda University in 1981 and completed his residency at Hinsdale Hospital near Chicago. He has a certification from the Certification Board of Nutrition Specialists (CBNS), is a Certified Diabetic Educator (CDE) and has a special interest in the lifestyle treatment of Type 2 Diabetes, Hypertension, Obesity, and Coronary Heart Disease.

Ann Klega, MD

Ann Klega, MD, board-certified in family medicine, earned her medical degree from the University of Florida, College of Medicine in Gainesville and completed her family practice/ obstetrics track residency at Halifax Medical Center in Daytona Beach. Dr. Klega has trained in Advanced Cardiac Life Support and Pediatric Advanced Life Support, and has advanced training in urgent care, diabetes complications, obesity and obstetrics.

Robert Quigley, MD

Dr. Robert Quigley attended Loma Linda University School of Medicine, where he also completed his Residency in Pediatrics. He was in private practice for eight years before joining the faculty of the Florida Hospital Family Medicine Residency in 1986 in the area of academic pediatrics.

Sabiha Siddiqui, MD

Dr. Sabiha Siddiqui attended Gandhi Medical College for medical school and completed her residency at the Orlando Regional Medical Center. Dr. Siddiqui is board certified in pediatrics and has a special interest working in pediatrics with newborns, infants, children and adolescents. She has been a part of the Florida Hospital family since 1980 as a full time faculty in the Family Medicine Residency Program.

Matthew Rensberry, MD

Dr. Rensberry, MD, board certified in family practice medicine, brings quite a few impressive accolades to the practice. He earned his medical degree from The Ohio State University College of Medicine in Columbus and completed a family medicine residency at Carl R. Darnall Army Medical Center in Fort Hood, Texas.

Robert Vandervoort, PharmD

Dr. Robert Vandervoort received his Doctor of Pharmacy degree from the University of Florida in 1995, and following that he completed a Primary Care Pharmacy Practice Residency at the Florida Hospital Family Health Center. His professional interests include diabetes, anticoagulation, and lipid management. He is an avid fan of the Florida Gators and trains in Brazilian jiu-jitsu when not chasing around his two young children.

Scott Warner, DO, JD

Dr. Scott Warner attended medical school at Michigan State University and attended law school at the University of Florida. He is board certified as a Family Practitioner and has been with Florida Hospital since 1997. He has a special interest in legal medicine and received the honor Best Doctors from Orlando Magazine from 2005-2009.

Raj Mehta, MD

Dr. Raj Mehta is board-certified in family medicine. He earned his medical degree from the University of Florida College of Medicine where he also completed a residency in family medicine. Dr. Mehta is an experienced family physician and a dedicated researcher and educator. He is passionate about the continuous improvement of quality health care and patient safety.

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