Our Physicians

For 55 years, Lake Medical Imaging has earned our standing as one of the most respected diagnostic imaging practices in the country.

We continue to garner national recognition for our quality of patient care and safety from some of the field’s most respected professional organizations.

We have grown to be one of a few full-service radiology practices specializing and fully accredited in MRI, CT, PET/CT, Women’s Imaging, Nuclear Medicine, and Interventional Radiology.

Meet Our Physicians

Cathrine E. Keller, M.D.

Cathrine E. Keller, M.D. Managing Physician

Cathrine E. Keller, M.D.

Managing Physician
Medical Degree: University of Chicago, Pritzker School of Medicine
Residency: Chief Resident, Diagnostic Radiology, Henry Ford Hospital, Detroit
Fellowship: Neuroradiology, University of Miami, Jackson Memorial Medical Center

Joseph S. Gurinsky, M.D.

Medical Degree: University of Miami School of Medicine
Residency: Chief Resident, Nuclear Medicine, and Resident, Diagnostic Radiology, University of Miami, Jackson Memorial Medical Center
Fellowship: CT, Ultrasound, Nuclear Medicine and MRI, Mount Sinai Medical Center
Additional Board Certification: Nuclear Medicine

David C. Weyn, M.D.

Medical Degree: Jefferson Medical College, Philadelphia
Residency: Internal Medicine, Cooper Hospital, University Medical Center, Camden; Diagnostic Radiology, Albert Einstein Medical Center, Philadelphia

Marc S. Schwartzberg, M.D.

Marc S. Schwartzberg, M.D.

Medical Degree: University of North Carolina at Chapel Hill
Residency: Chief Resident, Diagnostic Radiology, University of Alabama
Fellowship: Angiographic and Interventional Radiology, University of Alabama

Manoj Bhatia, M.D.

Medical Degree: Northwestern University Medical School
Residency: Diagnostic Radiology, Medical University of South Carolina
Fellowship: Musculoskeletal and Body MRI, Thomas Jefferson University

George E. Kainz, M.D.

Medical Degree: University of Miami School of Medicine
Residency: Chief Resident, Diagnostic Radiology, Robert Wood Johnson Medical School, Camden
Fellowship: Abdominal and Cross-Sectional Body Imaging, Temple University Hospital, Philadelphia

Mahrad Paymani, M.D.

Medical Degree: University of North Carolina School of Medicine at Chapel Hill
Residency: Diagnostic Radiology, University of Pittsburgh
Fellowship: Vascular and Interventional Radiology, Pittsburgh Vascular Institute
Certificate of Added Qualification: Vascular and Interventional Radiology

Pairoj Sae Chang, M.D. Ph.D.

Medical Degree: Loma Linda University School of Medicine, California; Ph.D. Biochemistry, Molecular Biology, Loma Linda University
Residency: Resident, Internal Medicine and Co-Chief Resident, Diagnostic Radiology Loma Linda University Medical Center
Fellowship: Vascular and Interventional Radiology, Loma Linda University Medical Center
Certificate of Added Qualification: Vascular and Interventional Radiology

Rosendo D. Diaz, M.D.

Medical Degree: University of Miami School of Medicine
Residency: Chief Resident, Diagnostic Radiology, Jackson Memorial Medical Center, University of Miami
Fellowship: Neuroradiology – Columbia University of Physicians and Surgeons, New York; Neuroradiology – Jackson Memorial Medical Center, University of Miami
Certificate of Added Qualification: Neuroradiology

Yi Liu, M.D., Ph.D.

Yi Liu, M.D. Ph.D.

Medical Degree: Capital University of Medical Sciences, Beijing, China; Ph.D., Neuroscience, Hahnemann University, Philadelphia
Residency: Department of Radiology, Hospital of University of Pennsylvania; Department of Surgery, Long Island Jewish Medical Center; Department of Neurosurgery, Beijing Tian Tan Hospital, Beijing

Richard K. Held, M.D.

Medical Degree: Ross University School of Medicine, Edison, New Jersey
Residency: Internal Medicine and Diagnostic Radiology, Norwalk Hospital, Norwalk, Connecticut
Fellowship: Nuclear Medicine Mallinckrodt Institute of Radiology, St. Louis, Missouri
Additional Board Certification: Nuclear Medicine

Anton Serafini, M.D.

Medical Degree: University of Miami School of Medicine
Residency: Chief Resident, Nuclear Medicine, and Resident, Diagnostic Radiology, University of Miami, Jackson Memorial Hospital
Fellowship: Nuclear Medicine University of Miami
Additional Board Certification: Nuclear Medicine

J. Laird McMullen, III, M.D.

Medical Degree; University of South Florida College of Medicine
Residency: Co-Chief Resident, Diagnostic Radiology, University of South Florida College of Medicine
Fellowship: Interventional Radiology, University of Virginia Health System

David E. Bajayo, M.D.

Medical Degree: Universidad Central de Venezuela Caracas; General Surgery Hospital Universitario de Caracas
Residency: Diagnostic Radiology with Subspecialty in Trauma/ER and General Surgery, University of Miami Jackson Memorial Hospital

J. Scott Carroll, M.D.

Medical Degree: Medical University of South Carolina
Residency: Diagnostic Radiology, Baptist Memorial Hospital, Memphis
Fellowship: Musculoskeletal Radiology, Case Western Reserve, Cleveland

Romil Y. Patel, M.D.

Medical Degree: Mount Sinai School of Medicine
Residency: Diagnostic Radiology, St. Luke’s –Roosevelt Hospital Center, University Teaching Hospital of Columbia College of Physicians and Surgeons
Fellowship: Musculoskeletal Imaging, University of Texas MD Anderson Cancer Center

Keith Kastelic, M.D.

Keith Kastelic, M.D.

Keith A. Kastelic, M.D.

Medical Degree: University of Illinois, Peoria
Residency: Diagnostic Radiology, University of Missouri, Kansas City
Fellowship: MRI Musculoskeletal, Washington University, St. Louis

Chiedozie A. Mkpolulu, M.D.

Chiedozie “Tony” Mkpolulu, M.D.

Chiedozie A. Mkpolulu, M.D.

Medical Degree: University of Calabar, Nigeria
Residency: Diagnostic Radiology, Baystate Medical Center, Springfield, Massachusetts
Fellowship: Cross Sectional Imaging, Johns Hopkins University, Baltimore

Brittany Nagy, M.D.

Brittany Nagy, M.D.

Medical Degree: Drexel University College of Medicine, Philadelphia
Residency: Diagnostic Radiology, Emory University School of Medicine, Atlanta
Fellowship: Vascular and Interventional Radiology, University of Florida College of Medicine

Marcus Kessler, M.D.

Medical Degree: Medizinische Fakultat, University of Cologne, Germany
Residency: Nuclear Medicine, Mallinckrodt Institute of Radiology, St. Louis;

Diagnostic Radiology, Pediatric Hospital Amsterdamer Strasse, University of Cologne, Germany; Diagnostic Radiology and Nuclear Medicine, Hospital Cologne-Holweide, Germany
Fellowships: Nuclear Medicine, The University of Arkansas for the Medical Sciences, Little Rock; Neuroradiology and Pediatric Radiology, Mallinckrodt Institute of Radiology, St. Louis

Christopher J. Schaeffer, M.D., Ph.D.

Medical Degree: University of Cincinnati College of Medicine; Ph.D., Biochemistry, The Ohio State University, Columbus
Residency: Diagnostic Imaging, Cleveland Clinic Foundation
Fellowship: Neuroradiology, Cleveland Clinic Foundation

David Factor, M.D.

David Factor, M.D

David Factor, M.D.

Medical Degree: Rush Medical College, Chicago, IL
Residency: Radiology, Tripler Army Medical Center

Kenneth Mandato, M.D.

Medical Degree: Boston University School of Medicine, Boston
Residency: Diagnostic Radiology, State University of New York, Stony Brook
Fellowship: Cardiovascular and Interventional Radiology, Albany Medical Center Hospital,
Albany, NY

Kathleen Meyer, M.D.

Kathleen Meyer, M.D.

Medical Degree: University of Cincinnati School of Medicine, Ohio
Residency: Mayo Clinic of Florida, Jacksonville, FL
Fellowship: Lynn Sage Comprehensive Breast Center, Northwestern Memorial Hospital, Chicago, IL