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Katherine Wagner, MD, is one of the skilled neurosurgeons serving patients at Venutra Neurosurgery in Ventura, California. She moved to Ventura in 2022 and has privileges at Community Memorial Hospital in Ventura, Ventura County Medical Center in Ventura, and St. John Regional in Oxnard.

Dr. Wagner completed her undergraduate degree at Wellesley College, where she majored in chemistry. Her undergraduate research focused on utilizing nanoparticles to remove metal ions from water and other solutions. She earned her medical degree at Rutgers New Jersey Medical School in Newark, New Jersey, where she helped manage a student-run clinic and provided medical care at a homeless shelter. The New Jersey Medical School Alumni Association awarded her scholarships during her second, third, and fourth years.

Dr. Wagner completed her neurosurgery residency at Hofstra/Northwell Health in Long Island, New York. She spent a year in a neuro-oncology fellowship that focused primarily on surgery for brain tumors, along with techniques like laser interstitial thermal therapy (LITT) and stereotactic radiosurgery (SRS). As a senior resident, she developed a strong interest in spine surgery, including neuro-navigation, exoscopic surgery, robotic surgery, and spinal instrumentation. After finishing her residency, she moved to California for a fellowship in complex and minimally invasive spine surgery at Stanford University. She moved to Ventura to start her practice after finishing that fellowship.

In her leisure time, Dr. Wagner enjoys hiking, gardening, boating, and traveling.

David Westra, MD, is an expert neurosurgeon who serves his patients at Ventura Neurosurgery in Ventura, California. He was raised in Tucson, Arizona, as well as Houston, Texas. He also spent a significant portion of his youth in Santiago, Chile, where he became fluent in Spanish. Dr. Westra is board-certified by the American Board of Neurological Surgery.

Dr. Westra attended the University of Texas at Austin and earned a degree with honors in chemical engineering. He then enrolled in the University of Texas at Houston Medical School, where he received a Doctor of Medicine with highest honors as a member of the Alpha Omega Alpha honor medical society. During this time, Dr. Westra spent a significant amount of time among the neurosurgeons at the MD Anderson Cancer Center. It was this experience that led him to pursue a career in neurosurgery.

After completing his medical degree, Dr. Westra enrolled in the Loma Linda University Medical Center residency program for neurosurgery. While at LLU Medical Center, he gained extensive experience in minimally invasive spine surgery as well as all aspects of cerebrovascular and neuro-oncologic surgery. Dr. Westra also completed extensive research investigating the capacity for hyperbaric oxygen therapy to reduce surgically-induced brain injuries.

Dr. Westra completed his chief residency year and enrolled in a minimally invasive neurosurgery fellowship at the Swedish Neuroscience Institute in Seattle, Washington. While there, he gained extensive experience working alongside leaders in the fields of pituitary surgery, cerebrovascular surgery, endoscopic neurosurgery, functional neurosurgery, and complex spinal surgery — including minimally invasive spine surgery.

In 2010, Dr. Westra joined the Ventura County Neurosurgical Associates in 2010 and became involved at the Community Memorial Hospital, where he currently serves on the surgery committee. He is an active member of the American Association of Neurological Surgeons, the Congress of Neurological Surgeons, the Western Neurosurgical Association, the California Association of Neurological Surgeons, and the Ventura County Medical Association. In his spare time, Dr. Westra enjoys spending time with his wife, Reimee, and his two children, Thomas and Olivia. He also loves travel, music, playing guitar, and everything to do with the ocean.

Board-certified neurosurgeon Brian R. Gantwerker, MD, specializes in the treatment of spinal and neurological conditions. He is fellowship-trained in complex spinal surgery and has been practicing for well over a decade.

At The Craniospinal Center of Los Angeles, patients benefit from his extensive experience treating complex brain and spine problems with minimally invasive techniques, and traditional surgery.  Working with new techniques such as neuro navigation, spinal endoscopy, and also providing direct patient care with a physician, Dr. Gantwerker makes the patient paramount.

Well-respected in his field, Dr. Gantwerker has authored several book chapters and peer-reviewed journal articles. He has also appeared on podcasts, television, and radio interviews and has instructed undergraduates, medical students, and residents in various neurosurgical topics.

A Chicago native, Dr. Gantwerker earned a degree with honors in psychology from the University of Illinois at Urbana-Champaign and graduated magna cum laude and Phi Beta Kappa. He went on to receive his medical degree from Rush Medical College in Chicago, where he focused on peripheral nerve regeneration research.

After completing his neurosurgical residency at University Hospitals of Cleveland / Case Western, Dr. Gantwerker studied spinal cord regeneration with stem cells at Case Western School of Medicine. He completed a complex spine fellowship at the world-renowned Barrow Neurological Institute in Phoenix, Arizona.

Dr. Gantwerker is a member of the Phi Beta Kappa and Golden Key honor societies. He is an active member of key esteemed professional organizations, including the American Association of Neurological Surgeons (AANS), the Congress of Neurological Surgeons (CNS),  and the North American Spine Society (NASS).  He’s also a board member of the California Association of Neurological Surgeons (CANS). Dr. Gantwerker is a board-certified diplomate of the American Board of Neurological Surgeons (ABNS). 

About Dr. Farin

Azadeh Farin, MD, FAANS, FACS, is a fellowship-trained and board-certified neurosurgeon at FARINeurosurgery, with experience in a wide range of neurosurgical procedures. She provides expert care in Los Angeles and Orange countries to patients in and around Long Beach, Palos Verdes, Rolling Hills, Hermosa, Manhattan Beach, Redondo Beach, Huntington Beach and Torrance, CA. Dr. Farin is proud to be among only 200 female neurosurgeons in the United States.

After graduating as high school valedictorian from her class of 700 students, Dr. Farin attended Yale University, where she double-majored in Molecular Biophysics & Biochemistry and Economics. Azadeh then won the title of Miss Greater Los Angeles USA and was a Finalist at the Miss California USA Pageant. 

Azadeh then worked at McKinsey & Co., an international management consulting firm, traveling worldwide to develop corporate strategy for CEOs. She earned her MD from the University of California San Diego, where she won the Whipple Memorial Endowed Scholarship and presented her research nationally. Her research continued at Columbia University where she investigated brain tumor growth patterns and established a model for testing anti-tumor drugs. 

Her research has earned her lead authorship for several manuscripts published in prominent medical journals. She completed her internship in General Surgery and residency in Neurosurgery at the University of Southern California (USC). She was the first woman in over 25 years to graduate from USC Neurosurgery. She served as Clinical Instructor of Neurosurgery at Keck School of Medicine at USC and LA County-USC Medical Center. Dr. Farin completed a fellowship in complex spine surgery and spinal deformity/tumors at UCSF, receiving the Congress of Neurological Surgeons Spine Research Award, granted to only one fellow in the US. 

In 2010, Dr. Farin won the Avicenna Award of Excellence. She has guest reviewed for the journal Neurosurgery and consulted for Grey’s Anatomy. She was recently granted a full patent by the US Patent and Trademark Office for her spinal device invention. Dr. Farin has published several dozen manuscripts, articles, and book chapters. 

Outside the hospital, she enjoys spending time with her husband and three children.

Board-certified neurosurgeon Ali H. Mesiwala, MD, FAANS, takes a solution-based approach to determine anatomic and functional abnormalities and then treats them with leading-edge technologies and integrative medicine.

At his four offices in Newport Beach, Marina del Rey, and Rancho Cucamonga, California, he focuses on helping all of their patients return to their normal lives, getting back into motion as quickly as possible.

The team treats a vast array of neurological conditions. After intensive neurological exams and diagnostic testing, they recommend the best nonsurgical treatments for each person's unique health care needs. They recommend surgery when symptoms are severe or persist despite conservative care.

Patients seek Dr. Mesiwala for his expertise in brain and spine surgery, as well as peripheral nerve surgery and artificial disc replacement surgery. 

He's an expert in complex brain and skull base surgeries, and he has the most experience in artificial disc replacements on the West Coast, including multi-level operations and all types of spinal decompressions.

Dr. Mesiwala is a leader in the field of minimally invasive sacroiliac (SI) joint surgery and has performed endoscopic cranial and spinal surgery since 2004. No matter where pain originates, patients get relief after he performs neuromodulation surgery.

After earning a Bachelor of Science in biomedical engineering and electrical engineering from Johns Hopkins University in Baltimore, Maryland, Dr. Mesiwala received his Doctor of Medicine from the University of California, San Francisco. 

Then he finished his neurological surgery residency at the University of Washington in Seattle, Washington.

He completed his skull base and cerebrovascular fellowships at the University of Washington, International Neuroscience Institute in Hannover, Germany, and the University of Pittsburgh in Pittsburgh, Pennsylvania.

As a respected researcher specializing in the development of novel technologies and minimally invasive techniques for brain and spine surgery, Dr. Mesiwala holds multiple patents for medical devices used in spinal surgery. 

In addition to his private practice, Dr. Mesiwala is the faculty surgeon for various artificial disc operations and spinal fusion operations with innovative techniques. He's a fellow of the American Association of Neurological Surgeons (FAANS).

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Hooshang Pak, MD, FACS, is a board-certified neurosurgeon at Coast Neurosurgical Associates in Long Beach, California. 

A graduate of Tehran University, Dr. Pak began his postgraduate training in New York City, where he completed his surgical internship at Saint Vincent Medical Center of Staten Island. He then moved to Michigan and undertook a neurosurgery residency at Henry Ford Hospital in Detroit. He also completed a year of fellowship training in microneurosurgery of cerebral vascular diseases under the supervision of James Ausman, MD, PhD.

Dr. Pak has been a diplomat of the American Board of Neurological Surgery and a Fellow of the American College of Surgeons. He has published numerous scientific papers in neurosurgical journals and textbooks and presented papers and scientific exhibits at national and international medical meetings. Dr. Pak has also been a member of the editorial board of the international neurosurgical journal, Surgical Neurology.

Dr. Pak has been selected by his peers since 1996 as one of The Best Doctors in America, a list that contains the top five percent of the American doctors.

Ramin Javahery, MD, FAANS, is a board-certified neurosurgeon at Coast Neurosurgical Associates in Long Beach, California. His education began at UCLA where he graduated Magna Cum Laude with a degree in English Literature.

During his undergraduate years, Dr. Javahery also engaged in research in the field of molecular biology, publishing and presenting on theories in gene transcription. He then went on to medical school at USC and became editor in chief of the USC Journal of Medicine. He continued to engage in research activities, with a focus on glutathione transport mechanisms.

Beyond Dr. Javahery’s academic pursuits, he was also interested in humanitarian activities and organized the USC-Rwanda Relief Fund to send money to the victims of Rwandan genocide.

After graduating from medical school, Dr. Javahery remained at USC for his Internship in General Surgery. From there, he spent 6 years at the University of Miami, completing both a Neurosurgery residency and a fellowship in Spine Surgery. He then began to focus his research activities on neurosurgery & published papers on Chiari Malformations and wrote chapters in textbooks on Spine Surgery.

After completing his final year in Miami as Chief Resident, he returned to Los Angeles to do a second fellowship in Pediatric Neurosurgery at Children’s Hospital Los Angeles. Today he is the Chief of Pediatric Neurosurgery at Miller Children’s Hospital, where he practices both adult and pediatric neurosurgery, as well as spine Surgery. This year he will also become the Chief of Adult Neurosurgery.

Dr. Javahery’s interest in patients extends beyond curing their diseases. He is passionate about caring for patients and is a member of the ethics committee at Long Beach Memorial. This committee is responsible for evaluating ethically complicated situations in the hospital. Dr. Javahery is also a member of American Association of Neurological Surgeons, the Congress of Neurological Surgeons, and the Children’s Oncology Group.

Dr. Ramin Javahery, is married to Dr. Jill Javahery, who also practices medicine in Long Beach. Together, they have three sons and enjoy being a part of the Long Beach medical community.

Abraham Rayhaun, MD, FACS, is a board-certified neurosurgeon and a fellow of the American College of Surgeons. He is a proud member of Coast Neurosurgical Associates, a neurosurgery practice in Long Beach, California. He treats a broad spectrum of neurological disorders utilizing the latest technical modalities including neuronavigational tools, stereotaxis, and microneurosurgery.

He is particularly interested in treating patients with cerebrovascular disease and brain tumors using conservative approaches with a combination of stereotactic radiosurgery and cyberknife as well as open microsurgical techniques when necessary. Dr. Rayhaun is also specialty trained in treating complex spinal conditions with minimally invasive approaches or with instrumented fusion when required.

His undergraduate studies began at the University of California, Davis (UCD) where he conducted clinical research on aneurysmal subarachnoid hemorrhages of the brain. He then attended medical school at the Columbia University College of Physicians & Surgeons in New York, where he was awarded a full scholarship and researched the molecular biology of the articular cartilage. He graduated from medical school with honors and was recognized for high educational achievements by Alpha Omega Alpha Honor Medical Society.  From there he moved to Michigan to start his neurosurgical residency under the mentorship of Dr. James Ausman and Dr. Mark Rosenblum at Henry Ford Hospital, where he focused on neurovascular disorders, brain tumors, and stereotactic procedures. After completing his chief residency year, Dr. Rayhaun spent a year focusing his attention on specialty training in complex disorders of the spine and was involved with clinical research related to treating cervical disc disease.

Dr. Rayhaun is a member of the Physicians Excellence Committee at Long Beach Memorial medical center and a member of the Peer Review Committee at Los Alamitos Medical Center. These committees oversee issues related to quality of patient care at the respective hospitals. Dr. Rayhaun has served as the director of Neurosurgery at Fountain Valley Hospital, and as the chief of the Department of Neurosurgery at Long Beach Memorial Medical Center.  He is a member of the American Association of Neurological Surgeons, Congress of Neurological Surgeons, as well as a member of the brain tumor section.

While priding himself in being at the cutting edge of neurosurgery, his greatest interest remains treating the individual patient with empathy, expertise and professionalism.

Sheri Palejwala, MD, FAANS, is a board-certified neurosurgeon at Coast Neurosurgical Associates in Long Beach, California. 

Born and raised in Los Angeles County, Dr. Palejwala completed her undergraduate studies at the University of California, Los Angeles, with degrees in neuroscience and biology. She obtained her medical degree at St. Louis University in Missouri, and completed her neurosurgical training at the University of Arizona in Tucson. There, she spent her last years serving as Chief Resident of Neurosurgery followed by a fellowship at the Barrow Neurological Institute in Phoenix, Arizona, focusing on translational and clinical research. Dr. Palejwala has published over 30 peer-reviewed articles and book chapters and has presented her findings at meetings worldwide.

Dr. Palejwala then completed an additional fellowship in endoscopic, minimally-invasive surgical neuro-oncology at the John Wayne Cancer Institute in Santa Monica, California. There, she focused on minimally-invasive microsurgical and endoscopic approaches and incorporating innovative technology and techniques into her practice.  Her clinical interests include endoscopic, keyhole, and other minimally-invasive approaches to tumors of the pituitary and skull base. 

She is a fellow of the American Association of Neurological Surgeons (AANS) and an active member of the Congress of Neurological Surgeons (CNS), the joint tumor section of the AANS/CNS, and the North American Skull Base Society. Outside of neurosurgery, Dr. Palejwala dedicates her time to her family, including her husband and twin daughters, and large extended family.

Dr. Palejwala looks forward to welcoming new and returning patients to Coast Neurosurgical Associates. 

Richard M. Young, MD, is a highly trained neurosurgeon with the team at Inland Neurosurgery Institute (INI) in Pomona and Arcadia, California. 

Dr. Young was born in Taiwan and came to the United States at an early age. His grandmother always predicted that he would be a doctor. Since the age of 3, he would hold her head when she had a migraine and would say, “When I get older, I will take care of you.”

Excelling in science and math, he went to college as an electrical engineering major at UC San Diego. However, his calling into medicine resulted in him graduating cum laude in biochemistry and cell biology. He continued his journey into medical school at New York Medical College in Valhalla, New York, where he discovered his passion for neurosurgery.

This passion derived from a pivotal case during medical school, where a patient was in a coma from a ruptured brain aneurysm. That same patient recovered weeks later from the brain bleed and surgery. “To have the ability to save a person’s life…that’s what I want to do.”

He completed his neurosurgical training at The George Washington University (GWU) in Washington, DC. During his training, he also spent a year as a research fellow at the National Institute of Health (NIH) – NINDS – Medical Division. After completing his residency at GWU, he came back to the west coast to UCLA for a two-year neurointerventional/neuroendovascular surgery CAST certified fellowship.

Not only has he written many articles, book chapters, poster presentations, and a journal cover for JNS-Spine, but he was also awarded the Bannister Award both for the fastest treatment time of removing a blood clot in the brain during his fellowship at UCLA. 

“Everyone knows how important the brain is, and if damage occurs to the brain, it can be devastating to that person and their family. To me, I do not see a patient but rather another human being that I am trying to help get better, like my grandmother. The reason I joined the group of neurosurgeons at Inland Neurosurgery Institute is that my colleagues share the same vision for helping people.”

During his free time, Dr. Young enjoys spending time with his family, cooking, running, and swimming.

EDUCATION

• 2016 – 2018: Interventional Neuroradiology Fellowship, University of California, Los Angeles Medical Center
• – 2016: Resident – Neurological Surgery, George Washington University Hospital
• 2013 – 2014: Research Fellow, National Institute of Health – NINDS
• 2009 – 2010: Intern – Neurological Surgery, George Washington University Hospital
• 2005 – 2009: Doctor of Medicine, New York Medical College
• 2001 – 2005: Bachelor of Science, University of California, San Diego – Revelle College

ASSOCIATIONS & MEMBERSHIPS

• American Association of Neurological Surgeons – Resident/Fellow member
• Congress of Neurological Surgeons – Resident/Fellow member
• North American Spine Society – Resident/Fellow member
• Phi Delta Epsilon Omicron Chapter – Colony Coordinator/Founder 2005-2006
• New York Medical College Student Senate – 1st year senator 2005-2006
• American Medical Association – Chapter Vice-President 2006-2007
• American Medical Students Association – Chapter Treasurer 2006-2007
• Gold Humanism Honor Society – Member – 2013-current

ARTICLES & JOURNALS

• Young RM, Leiphart JW, Shields DC, Caputy AJ. “Anterior cervical fusion versus minimally invasive posterior keyhole decompression for cervical radiculopathy.” Interdisciplinary Neurosurgery: Advanced Techniques and Case Management 2(4):169-176. Dec 2015. DOI: http://dx.doi.org/10.1016/j.inat.2015.08.002
• Young RM, Shafa J, Myseros JS. “The Chiari 3 malformation and Systematic Review of Literature.” Pediatr Neurosurg 50(5):235-242, Oct 2015. DOI: 10.1159/000438487
• Young RM, Sherman JH. “Necessity for Intra-operative Magnetic Resonance Imaging for Glioma Resection.” World Neurosurg. Jul 2015. DOI: 10.1016/j.wneu.2015.07.023
• Young RM, Jamshidi A, Davis G, Sherman JH. “Current Trends in the Surgical Management and Treatment of Adult Glioblastoma.” Ann Transl Med 3(9):121. June 2015. DOI: 10.3978/j.issn.2305-5839.2015.05.10
• Young RM, Vyas N. “Extracranial-Intracranial Bypass for Takayasu’s Arteritis: A Case report.” Interdisciplinary Neurosurgery. Interdisciplinary Neurosurgery 1(4), 112-114. Dec 2014. DOI: http://dx.doi.org/10.1016/j.inat.2014.10.001
• Young RM, Sherman J, Wind JJ, Litvack Z, Obrien J. “Treatment of Craniocervical Instability from a Posterior-Only Approach.” J Neurosurg Spine 21(2): 239-248. Aug 2014. DOI: 10.3171/2014.3.SPINE13684
• Young RM, Prasad V, Wind JJ, Olan W, Caputy AJ. “Novel Technique for Preoperative Pedicle Localization in Spinal Surgery with Challenging Anatomy: Technical Note.” J Neurosurg Spine 20(4): 400-403. Apr 2014. DOI: 10.3171/2013.12.SPINE13477.
• Leiphart, JW, Young RM, Shields, DC. “A Historical Perspective: Stereotactic Lesions for the Treatment of Epilepsy.” Seizure 23(1): 1-5. Jan 2014. DOI: 10.1016/j.seizure.2013.10.006
• Wind JJ, Young R, Saini A, Sherman JH. “The role of adjuvant radiation therapy in the management of high-grade gliomas.” Neurosurgery Clinics of North America. 23(2):247-58. April 2012. DOI: 10.1016/j.nec.2012.01.001
• Krishnan US, Taneja I, Gewitz M, Young R, Stewart J. “Peripheral Vascular Adaptation and Orthostatic Tolerance in Fontan Physiology.” Circulation. 2009 Nov 3;120(18):1775-83. DOI: 10.1161/CIRCULATIONAHA.109.854331

Siraj Gibani, MD, is an experienced neurosurgeon with the team at Inland Neurosurgery Institute (INI). Dr. Gibani sees patients at the practice’s offices in Pomona and Arcadia, California. 

Dr. Gibani is a native of the Inland Empire and grew up in West Covina and Pomona, California. He obtained his bachelor’s degree in biology from the California State University of Los Angeles through the Early Entrance Program. He went on to obtain his medical degree from Pennsylvania State University in Hershey. For his training, Dr. Gibani completed a neurosurgical residency in Philadelphia at Temple University Hospital. He then went on to pursue further subspecialty training in minimally invasive and complex deformity spinal neurosurgery at Stanford University Hospital in California. 

Dr. Gibani is affiliated with several professional organizations, including the American Association of Neurological Surgeons, the Congress of Neurological Surgeons, and the American Medical Association.

Dr. Gibani is happily married, and he enjoys soccer, hiking, and swimming in his spare time

EDUCATION

• Bachelor of Science in biology, California State University of Los Angeles.
• M.D. Degree, Pennsylvania State University, Hershey, PA.
• Neurosurgical Residency: Temple University Hospital, Philadelphia, PA.
• Subspecialty Training: Minimally invasive and complex deformity spinal neurosurgery, Stanford University Hospital, Stanford, CA.

ASSOCIATIONS & MEMBERSHIPS

• American Association of Neurological Surgeons (AANS)
• Congress of Neurological Surgeons (CNS)
• American Medical Association (AMA)

ARTICLES & JOURNALS

• Arko, Leopold IV MD; Passer, Joel Z. MD; Ahye, Nicholas MD; Quach, Eric MD; Gibani, Siraj MD; Manoochehri, Shahin MD; Fierst, Tamara M. MD (2016). Journal Club: Pediatric Low-Grade Ganglioglioma: Epidemiology, Treatments, and Outcome Analysis on 348 Children From the Surveillance, Epidemiology, and End Results Database. Neurosurgery. Vol 79 Issue 2 p 306-308.
• Hanrahan, G., Gibani, S. and Miller, K. (2008) Multivariate Chemometrical Classification and Assessment of Lake Tuendae: Mojave Desert Aquatic Environment Housing the Endangered Mojave Tui Chub. Ecological Informatics 3: 334-342.
• Hanrahan, G.; Zhu, J.; Gibani, S.; Patil, D.G. (2005) Chemometrics/Experimental Design, in Encyclopedia of Analytical Science, Second Edition (Paul J Worsfold, Alan Townshend and Colin F Poole, eds.), Elsevier, Oxford, Vol. 2, pp. 8-13.