For Physicians > Our Staff

R. Robert Wycoff, M.D., Founder, received his MD degree from the University of Southern California, School of Medicine. Following a tour of duty as a US Naval Flight Surgeon, he returned to USC to complete a radiology residency and fellowships in neuroradiology and vascular interventional radiology. Immediately following his fellowship training, he joined the staff at Huntington Memorial Hospital where he specialized in neuro, spine, interventional, and MRI/CT radiology for over twenty years. During this time he established a reputation for dedication and reliable excellence.While at Huntington, he developed and instituted a highly successful radiology interventional spine program based on MRI/CT scan diagnosis integrated with precise CT guidedspine diagnostic and treatment procedures.

Jay S. Tsuruda, M.D., Medical Director, received his MD degree from the University of California San Diego, School of Medicine, and then went on to complete a Diagnostic Radiology Residency also at UCSD. He is dual fellowship trained in MRI, at Huntington Medical Research Institute, and in Neuroradiology, at the University of California San Francisco. He then returned to Huntington Hospital as a Staff Radiologist but was shortly recruited back to UCSF as Attending Neuroradiologist and Chief of Neuro-MRI research.

Following his appointment at UCSF, he held similar positions at the University of Washington and University of Utah. Dr. Tsuruda is a Senior Member of the American Society of Neuroradiology. Dr. Tsuruda is well known and respected in the field of MRI, and has authored numerous peer reviewed papers and book chapters. He has received awards for scientific excellence from many professional societies, and has served on multiple committees for both national and international radiological societies.

Juan C. Esteva, M.D. completed his fellowship training in Vascular and Interventional Radiology at the University of Texas MD Anderson Cancer Center in Houston specializing in vascular intervention and other minimally invasive procedures. He completed his Diagnostic Radiology Residency at the University of Southern California, Los Angeles County/ USC Medical Center in Los Angeles, California. He received his Medical degree from Ponce School of Medicine in his native country Puerto Rico and his undergraduate degree in Biology from Saint Joseph’s University in Philadelphia, Pennsylvania. Dr. Esteva also received a Masters of Business Administration at the George Washington University in Washington D.C.

Prior to joining Oak Tree Medical Center, Dr. Esteva worked for The Permanente Medical Group in Hayward, California, Sutter Gould Medical Foundation in Modesto, California and Bay Area Interventional Radiology in San Francisco, California. Dr. Esteva has extensive experience in MRI, CT, Ultrasound and minimally-invasive image-guided diagnostic and therapeutic spine procedures. He is Board Certified by the American Board of Radiology and is an active member of the Society of Interventional Radiology, American College of Radiology and the Radiological Society of North America.

In addition to diagnostic interpretations and Therapeutic Spine Procedures, Dr. Esteva also performs Interventional procedures including Dialysis Shunt Declots and Fistulograms. Oncology procedures such as Embolizations, RF Ablation and Palliative Treatments; Venous Insufficiency treatments for Varicose Veins and Peripheral Vascular Disease (PVD), and performs Soft Tissue and Bone Biopsies.

William P. Mansfield, M.D. received his B.A. degree in psychology from Washington University in St. Louis, Missouri, and then completed postgraduate work at Georgia State University. He earned his MD degree from Morehouse School of Medicine in Atlanta, Georgia, where he received several honors and awards. After internship at UCLA Wadsworth VA Medical Center, he then completed radiology residency at UCLA King/Drew Hospital, where he was Chief Resident. Following residency, he went on to complete a subspecialty fellowship in MRI at Loma Linda University Medical Center. During radiology residency and fellowship training, Dr. Mansfield conducted several research projects in MRI and interventional radiology.

Dr. Mansfield is an expert in all areas of MRI & CT diagnosis, and has sub-specialized expertise in musculoskeletal and body MR imaging. Since 1994, he has also acted as an MRI consultant and has been responsible for establishing and directing MR imaging departments at community hospitals in Southern California, Oklahoma and Ohio. He also enjoys teaching and has instructed radiology residents for the Naval Hospital at Camp Pendleton. Dr. Mansfield is innovative and on the leading edge in the field of MRI, and is also an expert in non-vascular interventional radiology.

Dr. Mansfield is certified by The American Board of Radiology and is a member of The International Society for Magnetic Resonance. He maintains a high level commitment to professional excellence and dedicated patient care.

Donald W. Larsen, M.D. is a board certified Diagnostic Radiologist and has completed training in Vascular Interventional Radiology, Diagnostic Neuroradiology, and Interventional Neuroradology/ESNR. Dr. Larsen’s expertise includes a neuro-interventional practice that focuses exclusively in the realm of minimally invasive treatment of neurovascular disorders, including acute stroke treatment and prevention, as well as pain management. Procedures performed include: brain aneurysm embolization, arteoverasis malformation (AVM embolization, carotic, vertebral, and intracranial angioplasty and stenting, treatment of acute stroke emergences), and cerebral angioplasty. Pain management procedures performed include kyphoplasty, vertebroplasty, nerve blocks, epidural blocks, facet blocks, SI joint blocks, and piriformis injections.

George P.Teitelbaum, M.D. has more than 20 years experience in endovascular therapy. In his neurointerventional practice, Dr. Teitelbaum treats intracranial, head, neck, and spine neurovascular disorders including acute stroke, carotid stenosis, vascular malformations, aneurysms, and cerebral vasospasm. He also treats spinal compression fractures and sacral insufficiency fractures using vertbebroplasty, kyphoplasty and spine injections for pain management. Dr. Teitelbaum has authored or co-authored over 100 peer review scientific journal articles.

Rick Rubin, M.D. believes in a multidisciplinary approach to pain management. He works closely with spine surgeons, orthopedists, chiropractors, physiatrists, and physical therapists in the management of acute and chronic pain syndromes. After earning his degree in medicine from the University of Southern California, School of Medicine. Dr. Rubin joined Oak Tree Medical Center in 2004 and is board certified by the American Board of Anesthesiology. In addition he now is active staff at St. Johns Hospital in Santa Monica. He is skilled in all areas of image-guided spine procedures and has an active pain management practice.