Meet our Team
FOUNDER & PRESIDENT
dr. Shane Whitlock
Dr. Michael Shane Whitlock, MD, is a diagnostic radiologist with Luneta Radiology LLC and has more than two decades of clinical experience. His background includes serving as Chief of Radiology for Mountain Home Radiology Consultants. Dr. Whitlock completed his internship at the University of Arkansas and his Diagnostic Radiology residency at the University of Arkansas for Medical Sciences, followed by a fellowship in Musculoskeletal Imaging at the University of Washington School of Medicine. He maintains active medical licenses in multiple states and brings extensive experience in diagnostic and musculoskeletal imaging to the practice.
APPROVED
Dr. Matthew stadnyk
Dr. Matthew Stadnyk, MD, is a diagnostic radiologist with Luneta Radiology LLC. He earned his medical degree from the University of Missouri–Kansas City School of Medicine and completed an internship in general surgery at St. Luke’s Hospital in Kansas City. He went on to complete his Diagnostic Radiology residency at St. Louis University Hospital. Licensed in multiple states, Dr. Stadnyk brings extensive experience in diagnostic imaging and a commitment to providing high-quality patient care.
Dr. Jesus Contreras
Dr. Michael Stadnyk
Dr. Michael Stadnyk, MD, is a diagnostic radiologist with more than 20 years of clinical experience across hospital systems, outpatient centers, and private practice. He earned his medical degree from the University of Missouri–Kansas City School of Medicine and completed his diagnostic radiology residency at St. Louis University Hospital. Throughout his career, Dr. Stadnyk has developed broad experience in MRI, CT, ultrasound, breast imaging, trauma imaging, and general diagnostic radiology. In addition to his clinical work, he has held physician leadership roles and served on hospital committees, including Trauma Review and Tumor Boards. Dr. Stadnyk maintains active medical licenses in more than a dozen states and brings his years of clinical and leadership experience to Luneta Radiology, where he is focused on delivering high-quality radiology services and continuing to grow the practice.
APPROVED- ADD being past president of his local medical society and past councilor to the Missouri branch of the AMA.
full time physicians
Dr. Jesus Contreras, DO, is a diagnostic radiologist with Luneta Radiology LLC and has extensive experience in teleradiology. He completed his internship at Arnot Ogden Medical Center and his Diagnostic Radiology residency at Hemet Valley Medical Center, followed by a fellowship in Pediatric Radiology at Lucile Packard Children’s Hospital Stanford. Dr. Contreras has provided teleradiology services across multiple healthcare settings and maintains active medical licenses across multiple states.
Dr. Jesus Contreras, DO, is a board-certified diagnostic radiologist with Luneta Radiology LLC. He completed a fellowship in Pediatric Radiology at Stanford University / Lucile Packard Children’s Hospital and practices high-volume teleradiology across adult and pediatric imaging. He maintains active medical licenses in multiple states. APPROVED
Dr. Jessa Tunacao
Dr. Thomas schroyer
Dr. Thomas Schroyer Jr., MD, is a diagnostic radiologist with Luneta Radiology LLC who brings extensive clinical experience to the practice. He completed his internship at Forest Park Hospital before completing his Diagnostic Radiology residency at Saint Louis University School of Medicine. Throughout his career, Dr. Schroyer has gained broad experience in diagnostic radiology. He maintains active medical licenses across multiple states and brings his years of experience in diagnostic imaging to the Luneta Radiology team.
APPROVED
Dr. Monica Drylewicz
Dr. Monica Drylewicz, MD, PhD, is a diagnostic radiologist specializing in abdominal imaging with Luneta Radiology LLC. She earned both her MD and PhD from Washington University School of Medicine in St. Louis. She completed her internship at Barnes-Jewish Hospital, followed by her Diagnostic Radiology residency and a fellowship in Abdominal Imaging at the Mallinckrodt Institute of Radiology at Washington University. Dr. Drylewicz maintains active medical licenses across multiple states and brings specialized expertise in abdominal imaging to the Luneta Radiology team.
APPROVED
Dr. Jessa Tunacao, MD, is a diagnostic radiologist specializing in teleradiology and musculoskeletal radiology with Luneta Radiology LLC. She completed her Diagnostic Radiology residency at Mather Hospital through the Zucker School of Medicine at Northwell Health. Dr. Tunacao continued her training with fellowships in Imaging Informatics at the University of Pennsylvania and Neuroradiology & Musculoskeletal Radiology at Thomas Jefferson University Hospital. She maintains medical licenses across multiple states and brings expertise in both musculoskeletal imaging and imaging technology to the practice.
CHIEF MEDICAL OFFICER
Dr. Joseph Atumonye
Dr. Joseph Atumonye, MD, is a diagnostic radiologist specializing in neuroradiology with Luneta Radiology LLC. He completed his Internal Medicine internship at AdventHealth Redmond and his Diagnostic Radiology residency at the University of Miami–Jackson Health System. Dr. Atumonye is a Neuroradiology Fellow at the University of Miami. He maintains active medical licenses across multiple states and brings a strong background in diagnostic imaging to the Luneta Radiology team.
APPROVED
Dr. Robert fischer
Dr. Robert Fischer, MD, is a diagnostic radiologist specializing in vascular and interventional radiology with Luneta Radiology LLC. He completed his Internal Medicine internship and Diagnostic Radiology residency at Wake Forest University Baptist Medical Center before pursuing a fellowship in Vascular & Interventional Radiology at the University of New Mexico Hospital. Dr. Fischer maintains active medical licenses across multiple states and brings extensive clinical experience to the Luneta Radiology team.
APPROVED
Dr. Sammer Jazbeh
Dr. Sammer Jazbeh, MD, is a diagnostic radiologist specializing in MRI and diagnostic neuroimaging with Luneta Radiology LLC. He completed his Internal Medicine residency at the University of Illinois at Chicago before completing his Diagnostic Radiology residency at the University of Oklahoma Health Sciences Center. Dr. Jazbeh later completed a fellowship in Magnetic Resonance Imaging at the University of California, San Diego. He is licensed across multiple states and has extensive experience in MRI and diagnostic neuroimaging.
Dr. Laura Sievert
Dr. Laura Sievert, MD, is a diagnostic radiologist specializing in pediatric radiology with Luneta Radiology LLC. She completed her Diagnostic Radiology residency at the University of Missouri-Columbia School of Medicine before pursuing specialized fellowship training in Pediatric Radiology at the Mallinckrodt Institute of Radiology at Washington University. Dr. Sievert maintains active medical licenses across multiple states and brings specialized pediatric imaging expertise to the practice.
APPROVED