Mark H. Awh, M.D.
President
Mark H. Awh, M.D. is a founder of Radsource and a leading authority on Magnetic Resonance Imaging (MR). Dr. Awh is well known for his expertise in musculoskeletal MR and provides numerous lectures on the subject at national radiology meetings. He has co-authored a textbook on magnetic resonance imaging of the spine as well as…
Michael E. Stadnick, M.D.
Medical Director
Michael E. Stadnick, M.D. is a founding member of Radsource. Before joining Radsource, Dr. Stadnick established himself as a successful and respected radiologist specializing in musculoskeletal MR. Dr. Stadnick is a board-certified radiologist who received his residency training at SUNY Health Science Center at Syracuse. Following his residency, Dr. Stadnick was invited to remain as…
Leon R. Toye, M.D.
Medical Director
Leon R. Toye, M.D. has more than 15 years of musculoskeletal MRI experience and serves as a Radsource Medical Director. Prior to joining Radsource, Dr. Toye served as the Director of Musculoskeletal Radiology at Baylor University Medical Center in Dallas, Texas. Dr. Toye was highly esteemed by the radiology residents and fellows for his teaching…
Carol Ashman, M.D.
Dr. Carol Ashman joined Radsource after gaining extensive clinical experience as an attending at the Ohio State University College of Medicine and as a subspecialty private practice radiologist. Dr. Ashman graduated cum laude from Georgetown University before attending medical school at Indiana University, where she was inducted into the Alpha Omega Alpha medical honor society.…
Pamela H. Burdett, M.D.
Pamela H. Burdett, M.D. has extensive experience as a musculoskeletal radiologist and interpreter of MR. Dr. Burdett completed a musculoskeletal fellowship at Hospital for Special Surgery in New York City, following a radiology residency at New York-Presbyterian Hospital (The University Hospitals of Columbia and Cornell), a general surgery internship at North Shore University Hospital on…
Elizabeth Carpenter, M.D.
Elizabeth L. Carpenter, M.D. is an accomplished musculoskeletal radiologist with a passion for sports medicine imaging. She graduated with high honors from Wake Forest University, and then earned her medical degree at Stony Brook University School of Medicine. Dr. Carpenter completed residency in diagnostic radiology at NYU Langone Medical Center, where she served as Chief…
Joanna Costello, M.D.
Joanna Costello, M.D., is an accomplished musculoskeletal radiologist who obtained her bachelor’s degree from Lehigh University. She attended medical school at the Medical College of Pennsylvania and completed her radiology residency at Mercy Hospital of Pittsburgh. Dr. Costello then completed a musculoskeletal radiology fellowship at the University of Pittsburgh Medical Center. Prior to joining Radsource,…
Benjamin A. Eyer, M.D.
Benjamin A. Eyer, M.D., is a highly skilled radiologist who specializes in musculoskeletal and spine imaging. He graduated Magna Cum Laude from the University of San Diego and went on to earn his medical degree at the Medical College of Wisconsin. Dr. Eyer’s post-graduate training included an internship in preliminary medicine at Weiss Memorial Hospital,…
Tom Hash, M.D.
Thomas W. Hash, II, M.D. is a highly experienced musculoskeletal radiologist who obtained his bachelor’s degree from Duke University. He attended medical school at the Medical College of Georgia, which was followed by an Internal Medicine internship at the Naval Medical Center in Portsmouth, Virginia and Flight Surgeon training at the Naval Aerospace Medical Institute…
Gary A. Howell, M.D.
Gary A. Howell, M.D. has over 10 years experience as a musculoskeletal radiologist and interpreter of MRI. Dr. Howell completed a radiology residency at the University of Cincinnati Medical Center in Cincinnati, Ohio, where he served as Chief Resident. Following residency, Dr. Howell received additional training in musculoskeletal MRI at the San Francisco Magnetic Resonance…
Ingrid Kjellin, M.D.
Ingrid Kjellin, M.D. joined Radsource in 2007 after ten years as an attending in Musculoskeletal Radiology at the Loma Linda University Medical Center, where she served as Chief of Musculoskeletal Radiology since 2000. Ingrid Kjellin served as Chief of Musculoskeletal Radiology since 2000. Dr. Kjellin was born in Sweden and attended college and Medical School…
Todd E. Lanier, M.D.
Todd Ellison Lanier, M.D., is a board-certified neuroradiologist who earned his bachelor’s degree at the University of Georgia, graduating Magna Cum Laude. After earning his medical degree at the Medical College of Georgia, Dr. Lanier completed internship and diagnostic radiology residency at Baylor College of Medicine. Following residency, Dr. Lanier completed a two-year fellowship in…
Malisa Lester, M.D.
Malisa S. Lester, M.D. is a highly experienced neuroradiologist well-recognized by her peers for her expertise in neurological MRI. Prior to joining Radsource, Dr. Lester was a partner at Diagnostic Imaging Alliance of Louisville, a busy private radiology practice where she has worked since 2017. She previously served as an Assistant Professor of Radiology in…
Violeta Nikac, M.D.
Violeta Nikac, M.D. joins Radsource after gaining broad experience in both private practice and as an attending radiologist in musculoskeletal imaging at Harvard Medical School, where she instructed residents and fellows at the Brigham and Women’s Hospital for 5 years. Dr. Nikac graduated magna cum laude from Union College and subsequently was granted a Master…
Ashwin Prabhu, M.D.
Ashwin Prabhu, M.D. graduated with high honors from the University of California Davis, and then earned his medical degree at Tufts University School of Medicine. After completing a transitional year internship through Harvard Medical School, Dr. Prabhu completed his residency in Diagnostic Radiology at the University of Southern California (USC). After his residency, he completed…
Stephen F. Quinn, M.D.
Stephen F. Quinn completed both his undergraduate studies and his medical degree at the University of North Carolina, graduating with honors in both cases. His internship and residency were performed at the University of Virginia, under the direction of renowned musculoskeletal radiologist Theodore E. Keats. Dr. Quinn then completed a fellowship in Body Imaging and…
Donald Resnick, M.D.
Dr. Donald Resnick’s illustrious career spans a period of over 38 years spent primarily at UCSD, where he is Chief of Osteoradiology. He has served as a reviewer or on the editorial board of over 30 peer-reviewed journals, a function he is well suited for, as he has published over 850 peer-reviewed articles in orthopaedic…
David A. Rubin, M.D., F.A.C.R.
David A. Rubin, M.D. is a highly accomplished musculoskeletal radiologist who obtained his bachelor’s degree from Brown University. He is an Alpha Omega Alpha graduate of the University of Pennsylvania School of Medicine. He completed his radiology residency and musculoskeletal radiology fellowship at the Hospital of the University of Pennsylvania in Philadelphia, where he also…
Jeffrey A. Simon, M.D.
Dr. Jeffrey A. Simon performed his undergraduate studies at the University of Rochester, where he graduated cum laude with a B.S. major in neurosciences and a minor in economic theory. During his college tenure, Dr. Simon was selected to attend the undergraduate honor school in biochemistry and neurosciences at Oxford University, England. Dr. Simon attended…
William N. Snearly, M.D.
William N. Snearly, M.D. has unique experience and abilities in the field of musculoskeletal radiology. Prior to completing his radiology residency at Wilford Hall Medical Center, where he was Chief Resident, Dr. Snearly completed 2 years of an orthopaedic surgery residency at the Mayo Clinic in Rochester, Minnesota. As a result, Dr. Snearly possesses keen…
Katharine Tansavatdi, M.D.
Katharine Tansavatdi, M.D., is a highly experienced neuroradiologist who obtained her bachelor’s degree in Integrative Biology from the University of California, Berkeley, where she was inducted into Phi Beta Kappa. She attended medical school at Wake Forest University, where she received an NIH Medical Student Research Fellowship. Following an internship at Sacred Heart Medical Center…
Phillip F. J. Tirman, M.D.
Phillip F. J. Tirman, M.D. is a highly accomplished musculoskeletal radiologist who is well-recognized by his peers as an expert in the use of MRI for evaluating orthopaedic, sports medicine and spine disorders. Prior to joining Radsource, Dr. Tirman served as Medical Director at Renaissance Medical Imaging Associates, a leading provider of diagnostic imaging services…
Leland Y. Tsao, M.D.
Leland Y. Tsao obtained his bachelor’s degree with distinction from the University of Virginia, where he was an Echols Scholar and graduated in three years. He then attended the Virginia Commonwealth University School of Medicine – Medical College of Virginia (MCV) for his Medical School training, where he received numerous academic awards and was inducted…
Alice B. Viroslav M.D.
Alice B. Viroslav, M.D. received dual BAs in biology and psychology from Southern Methodist University, where she graduated Cum Laude. After graduating from the University of Texas Southwestern Medical School in Dallas, Dr. Viroslav completed her Diagnostic Radiology residency and Neuroradiology fellowship at Emory University, serving as Chief Resident in her fourth year of residency.…
James Y. Wu, M.D.
James Y. Wu, M.D. is an accomplished musculoskeletal radiologist with a passion for sports medicine imaging. He graduated from Duke University, where he was a Howard Hughes research scholar and recognized on the Dean’s List, then went on to earn his medical degree at New York Medical College. Dr. Wu completed an internship at North…
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