A Ventura County native, Dr. Montes is a graduate of Boston University School of Medicine and served as Medical Director of the Radiation Oncology Department at St. Bernardine Medical Center before joining ROCVC. Fluent in Spanish and the recipient of many honors and awards, he believes in the team approach to cancer care, appreciates the value of knowledge, and keeps his practice at the forefront of technology. Dr. Montes provides high-level care to cancer patients and specializes in the most advanced treatments for prostate, breast and skin cancer.Dr. Montes earned his Bachelor's in Mechanical Engineering from Loyola Marymount University and earned his M.D. from the Boston University School of Medicine. His postdoctoral training included an Internal Medicine residency at the Veteran's Administration/West Los Angeles and Radiation Oncology training at the University of Arizona Health Sciences Center. Prior to joining the Ventura County Center in 2000, he served as radiation oncology associate medical director at Desert Hospital Comprehensive Cancer Center in Palm Springs, California.Dr. Montes is dedicated to ongoing education and implementation of the most advanced cancer treatments. Patients often comment on his professionalism and reassuring manner.Honors and awards include:• Catherine McAuley Lifetime Achievement Award -  St. John's Healthcare Foundation• Celebration of Excellence Award - The Cancer Support Community - Valley/Ventura• Education and Development Fund Award, American Society for Therapeutic Radiology and Oncology• Clinical Oncology Career Development Award from the American Cancer Society• American College of Radiation Oncology Fellowship AwardDr. Montes belongs to the Southern California Radiation Oncology/Los Angeles Radiologic Society, the American Society for Therapeutic Radiation Oncology, the American College of Radiology, the Ventura County Medical Association, the California Medical Association and the American Medical Association. He is a member of the Medical Board of Directors, American Cancer Society, Central California Division. Dr. Montes also serves on the Wellness Community Professional Advisory Board and the St. John's Healthcare Foundation Board (Oxnard and Pleasant Valley).Cancer has touched my own loved ones, giving me first-hand awareness of the fear a cancer diagnosis brings to a patient and his or her family. It's important to provide patients with a comprehensive education of the disease and treatment process, thereby empowering them with the knowledge to make educated decisions for themselves. We offer patients the most current technology and a highly trained patient care team to ensure that they receive effective as well as compassionate treatment.– Dr. Henry Z. Montes. Dr. Montes is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Breast Cancer, Intraductal Papilloma, HER-2 Positive Breast Cancer, and Metastatic Brain Tumor.

Dr. Timothy O'Connor is Chairman of the Cancer program at St. John's Regional Medical Center in Ventura County, California.  He was a former assistant Clinical Professor at UCLA Medical Center after the completion of his residency at UCLA.  He has a special interest in robotic 6D image guided radiotherapy and its application across a broad spectrum of malignancies including breast cancer, CNS malignancies, head and neck malignancies as well as GI and GU malignancies.  Dr. O'Connor serves as President of Ventura County Radiation Oncology Medical Group,   Medical Director of the Radiation Oncology Centers of Ventura County, and Director of Radiation Oncology at the Ventura County Cancer Center. Dr. O'Connor led the accreditation of the Commission on Cancer Accreditation Program, the National Accreditation Program for Breast Centers and the game-changing STAR Program for cancer rehabilitation for St. John's Regional Medical Center. He participates in weekly multidisciplinary cancer meetings bringing together specialists across oncology to discuss and review  and implement new strategies for cancer care for  specific patients.  His broad experience in multiple oncology roles  provides unique insight into cancer care within the community setting.My experience working with grief expert and author Elisabeth Kübler Ross led me toward the field of oncology. Her compassionate care for cancer patients inspired me, and she helped me to understand the relationship between life and death. As an oncology physician who wants to be useful beyond just my technical skills, it's important to work through these types of issues for myself. Having empathy for what my patients are going through, and expressing that to them, is a vital part of their treatment.– Dr. Timothy A. O'Connor. Dr. O'connor is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Pleuropulmonary Blastoma, Breast Cancer, Laryngeal Cancer, and Throat Cancer.

Offers high-quality, individualized care with compassion. Believes communication and collaboration with patients is the foundation for effective relationships. Through effective education, patients are empowered to partner in their care and achieve their health goals. Dr. Banta is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Inflammatory Breast Cancer, Essential Thrombocythemia, Angiosarcoma, and Evans Syndrome.

Rahul Naik is an Oncologist in Oxnard, California. Dr. Naik is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Thrombocytopenia, Essential Thrombocythemia, Acute Mountain Sickness, and HER-2 Positive Breast Cancer. Dr. Naik is currently accepting new patients.

David Masiello is a Hematologist in Oxnard, California. Dr. Masiello is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Inflammatory Breast Cancer, Angiosarcoma, Paget Disease of the Breast, and Breast Cancer. Dr. Masiello is currently accepting new patients.

Austin Ma is an Oncologist in Oxnard, California. Dr. Ma is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Inflammatory Breast Cancer, Angiosarcoma, Breast Cancer, and Paget Disease of the Breast. Dr. Ma is currently accepting new patients.

I believe that we must take the time needed to get to know our patients as individuals and to share with them all surgical and nonsurgical options tailored to their personal needs. This will enable my patients to understand their own medical situation and to knowledgably partake in decisions about their own care. Dr. Oni is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Apoplexy, Stroke, Subarachnoid Hemorrhage, Transmyocardial Revascularization, and Stent Placement.

Amit Goyal is a Neurosurgery provider in Oxnard, California. Dr. Goyal is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Subdural Hematoma, Spinal Stenosis, Stroke, Chronic Subdural Hematoma, and Awake Craniotomy. Dr. Goyal is currently accepting new patients.

Dr. Michael Dorsi, MD is a neurosurgery specialist in Ventura, CA and has been practicing for 6 years. He specializes in neurosurgery, neurological spine surgery.Dr. Dorsi is a Board-Certified, Fellowship trained Neurosurgeon that has been providing top-notch care to the Ventura County community since 2012. He was born and raised in Stirling, NJ. The fundamental value of helping others and service to the community was instilled in him at an early age by his mother who worked as a nurse and later director of religious education at the local church and father who served the community as a police officer. After completing high school, he attended The Johns Hopkins University and graduated Phi Beta Kappa with Highest Honors and a degree in Neuroscience. He then earned a medical degree from The Johns Hopkins School of Medicine.While a student, he conducted ground-breaking research in the field of Neuropathic Pain and was awarded the Ronald Tasker Award from the American Association of Neurological Surgeons, the Harvey Cushing Award from the Johns Hopkins Department of Neurosurgery and was a research scholar of the American Association of Neurology. Dr. Dorsi then completed residency training in neurosurgery at The Johns Hopkins Hospital where he trained under some of the most prominent leaders in neurosurgery. In addition to general neurosurgery training. He developed a unique sub-specialty skillset in complex peripheral nerve surgery.During residency, he was awarded a prestigious fellowship from the California Institute of Regenerative Medicine and dedicated two years to researching spinal cord injury and stem cell transplantation at UCLA. He then returned to Johns Hopkins Hospital and served as Assistant Chief of Service of Neurosurgery.Following residency, Dr. Dorsi was honored as the recipient of the Cloward Fellowship for Spine and Peripheral Nerve Surgery from the American Academy of Neurological Surgery and completed a one-year minimally invasive and complex spine fellowship at UCLA. Dr. Dorsi joined Ventura County Neurosurgical Associates in 2012. Dr. Dorsi is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Spinal Stenosis, Spondylolisthesis, Invertebral Disc Disease, Laminectomy, and Microdiscectomy.

Alan Siu is a Neurosurgery provider in Ventura, California. Dr. Siu has been practicing medicine for over 17 years and is rated as an Advanced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Pituitary Tumor, Brain Stem Cancer, Arachnoid Cysts, Carotid Artery Surgery, and Laminectomy. Dr. Siu is currently accepting new patients.

Offers high-quality, individualized care with compassion. Believes communication and collaboration with patients is the foundation for effective relationships. Through effective education, patients are empowered to partner in their care and achieve their health goals. Dr. Westra is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Spinal Stenosis, Spondylolisthesis, Subdural Hematoma, Laminectomy, and Microdiscectomy.

Joshua Rosenberg is a Hematologist in Ventura, California. Dr. Rosenberg is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Smoldering Multiple Myeloma, Multiple Myeloma, Cutaneous T-Cell Lymphoma (CTCL), and Inflammatory Breast Cancer. Dr. Rosenberg is currently accepting new patients.

James Herman is a Neurosurgery provider in Ventura, California. Dr. Herman is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Spinal Stenosis, Delirium, Fractured Spine, Balloon Sinuplasty, and Microdiscectomy. Dr. Herman is currently accepting new patients.

Baijia Jiang is a Hematologist and an Oncologist in Ventura, California. Dr. Jiang is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. Her top areas of expertise are Drug-Induced Thrombocytopenia, Idiopathic Neutropenia, Iron Deficiency Anemia, and Thrombocytopenia.

Isabella Chen is a Hematologist Oncology specialist and a Hematologist in Ventura, California. Dr. Chen is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. Her top areas of expertise are Inflammatory Breast Cancer, Paget Disease of the Breast, Angiosarcoma, and BRCA Positive Breast Cancer.

Robert Ouwendijk is an Oncologist in Ventura, California. Dr. Ouwendijk is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Familial Colorectal Cancer, Lynch Syndrome, Colorectal Cancer, and Primitive Neuroectodermal Tumor (PNET).

Jacob Andrade is a Radiation Oncologist in Ventura, California. Dr. Andrade is rated as an Experienced provider by MediFind in the treatment of Posterior Fossa Tumor. His top areas of expertise are Breast Cancer, Bone Tumor, Mesenchymoma, and Undifferentiated Pleomorphic Sarcoma.