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Peninsula Imaging focuses heavily on its technology to provide the highest diagnostic imaging possible, but it is our fifteen highly skilled Radiologists who hold the key to providing our patients and doctors with the most effective treatment recommendations.

Fifteen board certified, fellowship trained & community-based radiologists provide our facility with fast and accurate reports for you and your doctor with advanced experience in neuroradiology, nuclear medicine, cross-sectional imaging, interventional radiology and musculoskeletal radiology.










  Simmi Chawla, M.D.

Dr. Chawla attended the McGill University (Quebec, Canada) for medical school and then attended York Hospital (PA) for her internship. She then completed a residency at Penn State University (PA) and a fellowship in Neuroradiology at the University of Maryland Medical Center. Dr. Chawla is certified by the American Board of Radiology with participation in the MOC (10 year re-certification) and a CAQ in Neuroradiology.



  David Y. Chung, M.D.

Dr. Chung attended the University of Maryland School of Medicine for medical school and then attended the University of Hospitals of Cleveland for his residency. He completed a fellowship at George Washington University Hospital. Dr. Chung is certified by the American Board of Radiology.



  Robert J. Corcoran, M.D.

Dr. Corcoran attended the Tulane University for medical school and then attended the Walter Reed General Hospital for his internship and residency. He is certified by the American Board of Radiology, the American Board of Nuclear Medicine, the American Board of Radiology with Special Competency in Nuclear Radiology, and has a Certificate of Added Qualifications in Angiography in Interventional Radiology.



  Gerard J. Hogan, M.D.

Dr. Hogan attended the University of Maryland Medical School for medical school and his radiology residency. After his year as chief resident, he then completed a body fellowship at the Johns Hopkins University Hospital. Dr.Hogan is certified by the American Board of Radiology. Dr. Hogan is delighted to be living here on the Eastern Shore with his wife and 2 young children.



  Philip C. Hugo, M.D.

Dr. Hugo attended the University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School and then attended the Jersey Shore Medical Center for his internship. Dr. Hugo completed his Residency in Diagnostic Radiology at the University of Colorado Health Center followed by a fellowship in Musculoskeletal Imaging at Beth Israel Deaconess Hospital. Dr. Hugo is certified by the American Board of Radiology.



  Peter A. Libby, M.D.

Dr. Libby attended the University of Vermont (Burlington) for medical school and then attended Norwalk Hospital (Connecticut) for his residency. He completed a fellowship at University of Southern California / Los Angeles County Hospital. Dr. Libby is certified by the American Board of Radiology and has an added qualification in Neuro-Radiology.



  Michael J. Marks, M.D.

Dr Marks attended UMDNJ- Robert Wood Johnson Medical School followed by diagnostic radiology residency at University of Maryland Medical Center. He then completed a fellowship in vascular and interventional radiology at Rhode Island Hospital. Dr Marks is certified by the American Board of Radiology and maintains certificate of added qualification in interventional radiology.



  Marvin E. Nielsen, M.D.

Dr. Nielsen attended Jefferson Medical College for medical school. He then completed a residency in family practice at Latrobe Area Hospital, a Jefferson affiliate, and was certified in Family Practice before his Diagnostic Radiology residency at Duke University Medical Center. Dr. Nielsen is certified by the American Board of Radiology.



  David Nizza, M.D.

Dr. Nizza, a Maryland native, graduated with Honors from University of Maryland School of Medicine (Baltimore) where he was inducted into the AOA. He completed his internship at Reading Hospital and Medical Center (PA) and his residency at Emory University (GA). He then furthered his training with a fellowship in Musculoskeletal Radiology at University of Washington (WA). Dr. Nizza is certified by the American Board of Radiology.



  Willilam M. Reid, M.D.

Dr. Reid attended the Albany Medical College (New York) for medical school and then attended Baylor College of Medicine (Houston) for his residency. He completed a fellowship at Georgetown University (Washington DC). Dr. Reid is certified by the American Board of Radiology and has an added qualification in Neuro-Radiology.



  Thomas J. Riccio, M.D.

Dr. Riccio attended the Sackler School of Medicine (Tel Aviv University, Israel) for medical school. He completed an internship at the New York City Hospital Center (Elmhurst, NY). Dr. Riccio attended SUNY Stony Brook for residency. He completed a fellowship in MRI at UCSD Medical Center. Dr. Riccio is certified by the American Board of Radiology and has a Certificate of Added Qualifications in Angiography in Interventional Radiology.



  Assen Todorov, M.D.

Dr. Todorov attended the Loma Linda University School of Medicine (CA) for medical school. He then completed a residency at Norwalk/Yale - New Haven Hospital (CT) and a fellowship at the Brown University/Rhode Island Hospital. Dr. Todorov is certified by the American Board of Radiology.



  Mario Todorov, M.D.

Dr. Todorov attended the Loma Linda University School of Medicine (CA) for medical school and then attended St. Francis Medical Center (PA) for his internship. He then completed a residency at Norwalk Hospital (CT) and a fellowship at the New England Medical Center (MA). Dr. Todorov is certified by the American Board of Radiology.



  Andrew D. Vennos, M.D.

Dr. Vennos attended the University of Maryland School of Medicine for medical school and then attended University of Maryland Medical Center for his internship, residency and fellowship. Dr. Vennos is certified by the American Board of Radiology.



  Alexander J. Zito, M.D.

Dr. Zito attended the New Jersey Medical School for medical school and then attended Overlook Hospital for his internship. He then completed a residency at Georgetown University (Washington DC) and a fellowship at the University of North Carolina (Chapel Hill). Dr. Zito is certified by the American Board of Radiology.



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