Our Staff

At Aviva, we understand that quality medical care and a positive customer service experience begin with a competent, dedicated, and friendly staff. We have assembled a highly qualified and engaged staff of professionals that are focused meeting the needs of each patient and client.

Dr. George Stoica

Board Certified - Internal Medicine - Pulmonary - Critical Care - Sleep Medicine

Board Certified in Internal Medicine by the American Board of Internal Medicine, Dr. Stoica comes to Central Florida after 13 years of private practice in Long Island, NY. With vast experience in patient management and medical care, Dr. Stoica has additional board certifications in in Sleep Medicine (ABSM), Critical Care Medicine (ABIM) and Pulmonary Disease (ABIM). He completed his post graduate residency and fellowship training at New York Flushing Medical Center affiliated with Cornell University Medical School and Long Island Jewish Medical Center campus for the Albert Einstein College of Medicine.

Dr. Kenneth Hines


I knew from an early age that I wanted to be a radiologist. My father was one and I enjoyed looking at the images with him. At the age of 16 I was accepted into Emory University in Atlanta where I earned my bachelors degree in biology. I was then accepted to and graduated with my Medical Doctorate from the University of Florida College of Medicine. Following medical school I completed my Radiology Residency at SUNY Health Science Center at Buffalo where I was Chief Resident for two years. Following residency I completed a combined Fellowship in Interventional Radiology and MRI at the Childrenís Hospital of Buffalo NY. I have been practicing in private practice in both the hospital and non-hospital settings for the past 24 years. I enjoy almost all aspects of radiology and strive to maintain the highest standards for interpretation in our field. It is my goal to provide my patients with the best care possible.

Doug Re, PA-C

Douglas comes to us as a nationally certified Physician Assistant with a decade of experience in Emergency Medicine and Urgent Care Medicine. He is also well versed in Workers Compensation injuries and Motor Vehicle Accident Rehabilitation. While working in New York University Medical Center Douglas was a Paramedic in the Bronx. He received his Masterís Degree in Physician Assistant Studies and has practiced in Central Florida ever since. Also a FMCSA Licensed Medical Examiner he performs DOT Physicals on truck drivers ensuring safety on our roadways.

Dr. Neil Rosenquist

Dr Rosenquist is a graduate of KU School of Medicine. He completed a 5 year radiology residency at KUMC-Wichita. Dr Rosenquist completed a MRI-MSK fellowship at MUSC in Charleston, Sc. He has 12 years experience in teleradiolology. His focus has been building rural radiology departments with success in Cardiac CT, nuclear medicine, MRI, and breast imaging program development. Dr Rosenquist is an accomplished musician and can be found playing piano, violin, guitar, banjo, and sings opera with a professional group in Florida.

Dr. Arthur Williams, II

Board Certified - Family Practice - Emergency Medical

Medical Education: MD - Meharry Medical College, Nashville, TN
Residency: Family Med - Meharry Medical College, Nashville, TN