Our world-class Radiology staff is entirely US based, Joint Commission accredited, and ready to help you. All Online Radiology doctors are licensed across the United States, and insured across the United States. Dr. Vincent is CEO of Online Radiology and played an integral role in designing the company’s PACS and RIS network capabilities. He was born in Port au Prince, Haiti. He has a B.S. in Chemistry from Southern College in Collegedale and his M.D. from Loma Linda University School of Medicine in Loma Linda, CA, where he also completed his internship and residency in Radiology and a fellowship in NeuroRadiology. He is board certified by and a Diplomat of the National Board of Medical Examiners and the American Board of Radiology, and later added a certificate of added qualification in NeuroRadiology.
Doctors

Alix Vincent, M.D.
Samuel Salen, M.D.

Dr. Salen is CFO of Online Radiology. He was born in Philadelphia, PA where he did his undergrad work at Temple University and earned his medical degree at Thomas Jefferson University Medical School. He then completed and internship and residency in Internal Medicine at Mt. Sinai Hospital Medical Center in New York, NY, then served as Captain in the US Air Force Medical Corp. He then returned to Temple University to complete his residency in Radiology. Dr. Salen has been CEO and President of MSB Radiology Medical Group and Renaissance Radiology Medical Group.
Gary Harris, M.D.
Dr. Harris received his BA in Biology from the University of Missouri-Columbia, MO, where also completed his M.D. He then completed an internship at NRMC Oakland,CA in General Medicine, and then completed his residency in Diagnostic Radiology at USNH San Diego,CA. He is certified by the American Board of Radiology and is a Diplomate of the National Board of Medical Examiners.
James Warren, M.D
Dr. Warren completed his B.A. at the University of California, Santa Barbara and his M.D. at the Autonomous University of Guadalajara in Jalisco, Mexico. He then completed a clinical year at Fifth Pathway at the UC Irvine School of Medicine. For his internship, he completed rotations in Pulmonary, Cardiology, Endocrinology, Gastroenterology, and Diagnostic Imaging at the VA at Wadsworth Medical Center in Los Angeles, CA, where he also completed his residency in Radiology. Dr. Warren is board certified and a diplomat of the American Board of Radiology.
Larry Menestrina, D.O.
Dr. Menestrina completed his BS in Biology at the University of Missouri at Kansas City, where he also earned his Doctor of Osteopathy degree. He then did an internship at Dallas Fort Worth Medical Center, then served in the US Navy and was a Naval Flight Surgeon at the Naval Aerospace Medical Institute. He then completed his residency in Diagnostic Radiology at the Naval Medical Center in San Diego. Dr. Menestrina is a both board certified by and a Diplomat of the American Board of Radiology, a Diplomat of the American Osteopathic Board of Radiology, and certified by the National Board of Examiners for Osteopathic Physicians and Surgeons.
Alfonso Carrillo, M.D.
Dr. Carrillo was born in Zacatecas, Mexico. He obtained his B.A. in Biochemistry/Cell Body education at the University of California, San Diego, and his M.D. degree at the University of California, San Diego. He performed his internship at UCSD Medical Center/VA Medical Center in General Surgery Research Fellowship at UCSD Medical Center in Interventional Radiology, and his Residency at Martin Luther King Drew University Medical Center in Diagnostic Radiology. He currently holds Fellowship at Providence/St. Joseph Medical Center in Magnetic Resonance Imaging, and he is Board Certified by the American Board of Radiology.
Steven Lis, M.D.
Dr. Lis did his undergrad work at Loyola Marymount University, and then earned a Masters of Science degree at the University of California at Riverside. He then earned his M.D. at Georgetown School of Medicine in Washington, DC. He did both his internship and residency in Radiology at Cook County Hospital in Chicago, IL, and then did a fellowship in angiography and interventional Radiology at the University of Chicago. Dr. Lis is certified by the American Board of Radiology.
Robert Rippner, M.D.
Dr. Rippner has a BA from Stanford University and his M.D. from UCLA School of Medicine. He then completed his internship and residency in Radiology at Wadsworth VA Medical Center in Los Angeles, CA. Dr. Rippner is board certified by the American Board of Radiology.
Vi Truong, D.O.
Dr. Truong was born in Can Tho, Vietnam. He earned his B.S. in Biological Sciences from the University of California at Davis, then earned his D.O. at the University of Osteopathic Medicine and Health Sciences in Des Moines, IA. He completed his internship at Wyckoff Heights Medical Center in Brooklyn, NY, and then his residency in Diagnostic Radiology at Garden City Hospital in Garden City, MI. Dr. Truong then completed a fellowship in Trauma and Emergency Radiology at the University of Texas, Houston Medical School. Dr Truong is board certified by the American Osteopathic Board of Radiology and is a Diplomat of the National Board of Osteopathic Medical Examiners.
Aaron Hao Jun, M.D.
Dr. Jun completed his B.S. degree at John Hopkins University in Baltimore, MD where he graduated with honors, and then went on to complete his M.D. at St. Louis University of Medicine. He then completed his residency in Radiology at the University of Cincinnati. Dr. Jun is certified by the American Board of Radiology.
Gareth Roberts, M.D.
Dr. Roberts completed his BS degree at Colorado State University in Fort Collins, CO, and then earned his M.D. from the Sanford School of Medicine at the University of South Dakota. He then completed his internship and residency in Diagnostic Radiology at St. Joseph’s Regional Medical Center in Milwaukee, WI. Dr. Roberts is board certified by the American Board of Radiology.
Kathlene Guth, M.D.
Dr. Guth was born in Los Angeles, CA and did her undergrad at Pacific Union College in Angwin, CA. She earned her medical degree at Loma Linda University in Loma Linda, CA, where she also did her internship and residency in Diagnostic Radiology. She is board certified by the American Board of Radiology. and has nearly 30 years of experience practicing Diagnostic Radiology.
Atul Patel, M.D.
Dr. Patel earned his BS from the Sophie Davis School at the City College of New York as part of the seven year BS/MD program. He then completed his medical degree at Mount Sinai Medical School in New York, NY, where he also completed his internship in Pathology. He then completed his residency at Montefiore Medical Center in Diagnostic Radiology, and did a second residency in Diagnostic Radiology at St. Barnabas Medical Center in Livingston, NJ. Dr. Patel then did a fellowship in Body Imaging at the University of Texas MD Anderson Cancer Center. He is board certified by the American Board of Radiology.
Fred Shu, M.D.
Dr. Fred Shu was born in Chicago, IL. He completed his B.S. at Cornell University in Ithaca, NY and then earned his M.D. from Tufts University School of Medicine in Boston, MA. He completed his internship in Internal Medicine at Greenwich Hospital in Greenwich, CT and his residency in Diagnostic Radiology at Loma Linda University Medical Center in Loma Linda, CA. Dr. Shu is board certified by the American Board of Radiology.
Huma Sarah Qureshi, M.D.
Dr. Qureshi was born in Detroit, Michigan. She then participated in the seven year medical program at Union College in conjunction with Albany Medical College where she graduated Cum Laude with a double major in Biology and Sociology, as well as her medical degree. She did her internship at Harbor/UCLA Medical Center and then was Chief Resident in Radiology, and completed a fellowship in Body Imaging at UC Irvine Medical Center. Dr. Qureshi is board certified by the American Board of Radiology.
Peter Piampiano, M.D.
Dr. Piampiano was born in Rochester, NY. He holds a B.A. in Biological Sciences, Minor in Chemistry at California State University, Fullerton. He obtained his M.D. degree at Creighton University School of Medicine. He performed his internship at Loma Linda University Medical Center in Internal Medicine, and his Residency at Loma Linda University Medical Center in Diagnostic Radiology. He currently holds Fellowship at Loma Linda University Medical Center in Vascular/Interventional Radiology, and he is Board Certified by the American Board of Radiology.
Peter Semogas, M.D.
Dr. Semogas ws born in Saskatoon, Saskatchewan, Canada. He holds a B.Sc.in Honors Genetics at McGill University, Quebec Canada. He obtained his M.D. degree at McGill University School of Medicine in Quebec, Canada. He performed a rotating Internship at University of Hawaii,and his Residency at Dartmouth-Hitchcock Medical Center, Lebanon, NH in Diagnostic Radiology. He also holds fellowship at University of British Columbia/Vancouver General Hospital in Abdominal Radiology, and he is Board Certified by the American Board of Radiology.
Mahesh Patel, M.D.
Dr. Patel was born in London, UK. He received his B.S. in Physics, Summa Cum Laude at University of Massachusetts at Amherst, a M.S. in Physics at University of Massachusetts at Amherst, and he obtained his M.D. degree at Boston University School of Medicine. He performed his Internship at Caritas Carney Hospital, Boston, MA in Medicine, his Residency at University of Connecticut/John Dempsey Hospital, Farmington, CT in Diagnostic Radiology, and a 2nd Residency at Tufts-New England Medical Center, Boston, MA in Diagnostic Radiology. He currently holds Fellowship at Massachusetts General Hospital in Cross-sectional Imaging/ Mammography, a 2nd Fellowship at Tufts-New England Medical Center, Boston, MA in Neuroradiology, and he is Board Certified by the American Board of Radiology.
Lisa Mahoney, M.D.
Dr. Mahoney was born in Riverside, CA. She received her B.S. in Biology with Honors at Cal Poly, Pomona, CA, and her M.D. degree at Loma Linda University School of Medicine. She performed her Transitional Internship at Kettering Medical Center, and her Residency at Loma Linda University Medical Center in Diagnostic Radiology. She currently holds Fellowship at Indiana University Hospital, Indianapolis, IN in Breast/Body Imaging, and she is Board Certified by the American Board of Radiology.
Juanito Villanueva, M.D.
Dr. Villanueva was born in Manila, Philippines. He received his B.S. at California Institute of Technology, and his M.D. degree at University of California, San Francisco. He performed his Internship at University of California, Irvine in Internal Medicine, and his Residency at LAC University of Southern California in Diagnostic Radiology. He currently holds Fellowship at St. Mary Medical Center, Long Beach, CA in MRI/Interventional Radiology, and he is Board Certified by the American Board of Radiology.





