Our Radiologists

Sarah H. O’Connell, MD
Sarah H. O’Connell, MD, attended medical school at the University of Texas Medical School at Houston where she was elected to the Alpha Omega Alpha Honor Society upon graduation.  She completed an internship in Internal Medicine at the University of Texas Medical School at Houston followed by a diagnostic radiology residency at Yale New Haven […]
Michael Kelleher, MD
Michael S. Kelleher Jr, MD specializes in pediatric and musculoskeletal imaging.  Dr. Kelleher graduated from Trinity College as class Salutatorian with a Bachelor of Science degree in Biology and earned his medical degree from the University of Connecticut School of Medicine. He completed his diagnostic radiology residency at Yale New Haven Hospital and went on […]
Kameron Shahid, MD
Dr. Shahid attended college at Williams College in Massachusetts, followed by medical school at St. George’s University.He then pursued a research fellowship in muscluloskeletal radiology at the Mayo Clinic in Minnesota, focusing his researchon peripheral nerve imaging and intraneural ganglion cysts. He then completed his diagnostic radiology residency at Yale New Haven Hospital, followed by a […]
Michael G. Johnson Jr., M.D.
Michael G. Johnson Jr, M.D, a Connecticut native, specializes in Interventional Radiology. Dr. Johnson received his Bachelor of Science degree in Molecular and Cell Biology from the University of Connecticut and earned his Medical Degree at the University of Connecticut School of Medicine. He completed a transitional internship year at the Hospital of St Raphael […]
Zaixiang Sherry Zhang, M.D., PhD.
Dr. Zaixiang Sherry Zhang did a Surgical Internship at University of Connecticut and then completed her Residency in Diagnostic Radiology at Wayne State University and Detroit Medical Center in Michigan. She completed her fellowship training in Neuroradiology at Emory University, Atlanta. She has published many articles in Neuroradiology, and spent several years as a Research […]
Robert Wolek, M.D.
Dr. Robert Wolek attended high school at the Fairfield College Preparatory School in Fairfield, Connecticut, and received his Bachelor’s degree in Biology at Brown University. He continued at Brown University’s School of Medicine and completed an eight-year program in Liberal Medical Education where he earned his MD degree. Dr. Wolek completed a Diagnostic Radiology Residency […]
Craig Walden, M.D.
 Dr. Craig Walden was named a “Top Doc” in the Connecticut Magazine 2010 and 2011 listings of top physicians in the state! Dr. Walden received his Bachelor of the Arts degree in Chemistry and Psychiatry at the University of Minnesota, Morris and his M.D. degree from the University Of Minnesota School Of Medicine. He then completed […]
Nancy Rini, M.D.
Nancy Rini, M.D., C.C.D. completed her residency in radiology at the University of Colorado Healtlh Sciences Center in 2004 and served as chief resident in radiology. She received her certification from the American Board of Radiology. Dr. Rini completed an MRI fellowship at Northwestern University with emphasis on Body MRI and Musculoskeletal MR Imaging. She is […]
Bruce Kovalenko, M.D.
Bruce Kovalenko, M.D., is a Vascular & Interventional Radiologist. He earned his medical degree at New York University, and then did his Residency in Diagnostic Radiology at Bridgeport Hospital, part of the Yale University Program. He then completed his Vascular & Interventional Fellowship at the University of Pennsylvania. Dr. Kovalenko is Board Certified by the American Board […]
Ravi Jain, MD, Ph.D.
Ravi Jain, MD, Ph.D. attended the California Institute of Technology in Pasadena, CA. where he graduated with honors receiving his Masters and Ph.D. in Chemical Engineering. He then earned his M.D. degree from the University of Miami Medical School, Miami, FL. He completed his residency in diagnostic radiology from the University of Colorado School of […]