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As a leading neurosurgeon in Orange County, California, Christopher Duma, MD, FACS, offers the most comprehensive care for brain tumors, brain diseases, and movement disorders. At his Newport Beach neurosurgical practice, he specializes in minimally invasive surgeries using state-of-the-art technology.

Dr. Duma is board-certified by the American Board of Neurological Surgery and a fellow of the American College of Surgeons. Dr. Duma also serves as the medical director of the brain tumor program at Hoag Memorial Hospital Presbyterian, a highly ranked academic hospital in Newport Beach, California.

Dr. Duma stays up to date on the latest neurosurgical treatments and technologies. He has even patented an immunotherapy treatment for glioblastomas, and his gene therapy and other research are an integral part of the fight against malignant brain tumors. His Newport Beach office is fully equipped with the latest computer-assisted neurosurgical technologies, radiosurgery tools, like Gamma Knife® and CyberKnife®, and the world-renowned StealthStation™ navigational surgical system.

After earning his medical degree from Stony Brook University School of Medicine in Stony Brook, New York, Dr. Duma completed his residency in neurological surgery at MedStar Georgetown University Hospital in Washington, DC. He went on to complete a one-year fellowship at the University of Pittsburgh, Presbyterian Hospital in Gamma Knife radiosurgery and stereotactic neurosurgery. This hospital was the first in the nation to install Gamma Knife technology, and since 1990, Dr. Duma has been performing Gamma Knife radiosurgery, making him an expert in this field.

At his Newport Beach neurosurgical practice, Dr. Duma offers a variety of surgical services to address brain disease and tumors, as well as neurological conditions like Parkinson’s disease. He is also skilled in regenerative treatments, like stem cell therapy, to restore patient function and improve overall health.

For a personal consultation with Dr. Duma, call the office or request a consultation online today.

About Brittni

Brittni Mack, PA-C, is a neurosurgery and neurointerventional surgery physician assistant who joined Link Integrated Healthcare in 2023. She started her career in trauma and emergency general surgery, where she cultivated a fascination and appreciation for neurosurgical care.

Brittni was born and raised near Pittsburgh, PA, and completed both of her undergraduate and graduate physician assistant studies at Saint Francis University in Loretto, PA. There, she earned minors in neuroscience and biology. Shortly after graduation, she moved to Southern California to chase the sunshine and launch her career. In her free time, she enjoys the beach, adventures with her dogs and cat, plant-based cooking, snowboarding, live music, and Pittsburgh Penguins hockey.

About Dr. Akshay Gupte

Dr. Akshay Gupte is a distinguished, ABNS board-certified neurosurgeon with over 18 years of clinical excellence. As a Fellow of the American College of Surgeons, Dr. Gupte has dedicated his career to mastering minimally invasive and advanced hybrid surgical techniques. His practice is defined by a commitment to precision and safety, consistently delivering superior clinical outcomes.   

Specializing in the surgical management of complex brain and spine tumors, Dr. Gupte utilizes state-of-the-art international techniques and globally recognized guidelines. He is a pioneer in advanced spine care, offering innovative hybrid solutions for neck and back pain that successfully balance stability with mobility to ensure long-term relief and world-class recovery.  

Basin Neurosurgical and Spine Associates is a highly respected neurosurgery practice in Odessa, Texas. Led by neurosurgeon Alim Ladha, MD, Basin Neurosurgical and Spine Associates uses advanced surgical tools and techniques when treating neurological conditions and performing brain and spine surgery.

Dr. Ladha specializes in treating many spine problems, including back pain, neck pain, sciatica, pinched nerve, spondylolisthesis, spinal stenosis, herniated disk, and adult degenerative scoliosis.

Patients can expect a comprehensive evaluation and treatment plan when they visit Basin Neurosurgical and Spine Associates for a spine surgery consultation. For patients in need of spine surgery, Dr. Ladha uses the latest tools and techniques, including minimally invasive spine surgery and robotic surgery. 

Dr. Ladha is a skilled neurosurgeon who also performs complex spine surgeries and revision spine surgery. 

Additionally, Basin Neurosurgical and Spine Associates specialize in diagnosing and treating brain tumors. The neurosurgeon performs stereotactic navigation and neuro-navigation, using small incisions, guided-imagery, and advanced technology to remove brain tumors.  

For expert care, call Basin Neurosurgical and Spine Associates or schedule an appointment online today.

Aqib Zehri, MD, is a fellowship-trained neurosurgeon in Portland, Oregon, specializing in complex spine surgery. He treats a wide range of spinal conditions, from common degenerative disorders to advanced deformity and revision cases, with a focus on identifying the underlying cause of symptoms and selecting the most appropriate treatment.

Dr. Zehri’s approach emphasizes careful evaluation and individualized care. He offers both non-surgical management and advanced surgical options, including minimally invasive and endoscopic techniques, when appropriate. His goal is to relieve nerve compression, restore spinal function, and maintain as much normal anatomy as possible.

In addition to treating routine spine conditions, Dr. Zehri has experience in complex cases, including spinal deformity, revision spine surgery, and conditions involving spinal alignment and neurologic compromise.

Dr. Zehri completed his undergraduate and medical training at The University of Arizona. He then completed his neurosurgery residency at Wake Forest University School of Medicine, followed by advanced fellowship training in complex spine surgery at the Barrow Neurological Institute in Phoenix, Arizona.

He is committed to providing thoughtful, patient-centered spine care with an emphasis on clear diagnosis, appropriate treatment selection, and long-term outcomes.

RIA Neurovascular is the leading neurointerventional surgery center in the Denver area, with locations in Englewood, Aurora, Lone Tree, Littleton and Golden, Colorado. The highly experienced team of neurovascular specialists offer state-of-the-art, minimally invasive treatments for a wide range of conditions, including arteriovenous malformations (AVMs), brain aneurysms, subdural hemorrhage, carotid stenosis, and stroke.

The team at RIA Neurovascular only uses evidence-based, cutting-edge therapies to diagnose and treat neurovascular health problems. All surgeons are fellowship-trained, board-certified leaders in the field. They’re supported by equally well-trained nurse practitioners and clinical staff. 

The team is responsive and patient-focused. They take time to explain patients’ health issues and treatment options. The team wants to educate patients, so they feel empowered to make the best decisions about their health care. 

RIA Neurovascular actively participates in clinical research. They investigate and support emerging best practices and technologies to ensure they offer the best possible procedures. 

RIA accepts most insurance plans. The practice welcomes new patients and offers appointments via the phone or the online scheduling tool. 

Board-certified in both diagnostic radiology and neuroradiology, Ian Kaminsky, MD, MS, is one of the leading neurointerventional surgeons practicing at RIA Neurovascular, in Englewood, Colorado. He offers state-of-the-art procedures to address a wide range of health conditions ranging from ischemic stroke to cerebral aneurysms.

Dr. Kaminsky earned his Doctor of Medicine and Master of Science with honors at the American University of the Caribbean School of Medicine, in St. Maarten, Netherland Antilles. He served his internship and his radiology residency at William Beaumont Hospital in Royal Oak, Michigan.

Dr. Kaminsky went on to complete rigorous fellowship training in diagnostic neuroradiology at Weill Cornell Medical Center, New York-Presbyterian Hospital and Memorial Sloan Kettering Cancer Center, in New York. He participated in an additional prestigious fellowship program in endovascular surgical neuroradiology at Johns Hopkins Hospital in Baltimore.

Dr. Kaminsky shares his knowledge and expertise by presenting at seminars and conferences around the country. He has also contributed to publications in peer-reviewed medical journals.  

Eric Arias, MD, is one of the gifted neurointerventional surgeons practicing at RIA Neurovascular in Englewood, Colorado. Dr. Arias has a combined background as a neurosurgeon and endovascular neuroradiologist, which allows him to provide a comprehensive and unbiased perspective to his patients. 

Dr. Arias earned his Doctor of Medicine at the prestigious Columbia University in New York City. He went on to serve his neurological surgery residency at Washington University / Barnes Jewish Hospital in St. Louis. 

He also completed rigorous fellowship training in endovascular surgical neuroradiology at Washington University's Mallinckrodt Institute of Radiology in St. Louis. Dr. Arias has also contributed to dozens of articles published in peer-reviewed journals. 

Dr. Arias provides both surgical and minimally invasive endovascular procedures to address health issues, including aneurysms, stroke, and carotid stenosis. His other areas of particular interest include meningiomas, cervical spine disease, and minimally invasive spinal surgeries. He offers a compassionate, customized approach to patient care, combined with a meticulous surgical ability. 

Thomas S. Ellis, MD, FAANS, FACS, is an experienced Neurosurgeon at Fort Worth Brain & Spine Institute, where patients are treated like family. 

Dr. Ellis has practiced Cranial Base, Vascular, and General Neurosurgery in Fort Worth since 1997. He founded Fort Worth Brain & Spine Institute, LLP, in 2003, collaborating with Dr. Philip C. Bechtel, Dr. Richard O. Hubbard, and Dr. Andrea Halliday.

With over twenty years of continuous practice in Fort Worth, Dr. Ellis specializes in the surgical and non-surgical, multi-modality management of cranial base/skull base tumors and vascular lesions, along with the full spectrum of general neurosurgical disorders, including general and complex spine disease.

Dr. Ellis trained under the world’s foremost expert in Pituitary Surgery, Edward R. Laws, MD, and one of the originators of Skull Base Neurosurgery, Dr. Laligham Sekhar, during his residency at The George Washington University, Washington, D.C. 

He completed his fellowship in Skull Base Neurosurgery and Endovascular Neurosurgery there, as well as his fellowship in NeuroPathology at the Armed Forces Institute of Pathology at Walter Reed Hospital in Washington, D.C.  

Dr. Ellis trained United States and International Fellows in Skull Base Neurosurgery and was the Founding Director and Investigator at the Ammerman Cranial Base and Vascular Neurosurgical Laboratory at George Washington University.

He had the outstanding privilege of being the last resident to train and operate with Dr. Hugo V. Rizzoli – Dr. Walter Dandy’s last resident and originator of the “lumbar discectomy” and the first Neurosurgeon to perform and describe the clipping of a posterior circulation aneurysms.

Dr. Ellis was awarded the prestigious “Outstanding Resident in Neurosurgical Training Award” by the Neurosurgical Faculty at George Washington University and received the highest score to date on The American Board of Neurological Surgeons Written Board Exam during his ABNS Board Certification Process.

He also received the highest score recorded on his Maintenance of Certification Recertification Exam.

Dr. Ellis has been the Chief of the Division of Neurosurgery at Texas Health Harris Methodist Fort Worth for over 12 years. 

He has made innumerable advancements to the Neurosurgical Community over the past 20+ years in Tarrant County. He has been selected as a “Top Doc” in Neurosurgery by Fort Worth Magazine and other community publications each year since such local physician polls started in 2002.

Dr. Ellis is a fifth-generation native Texan, born and raised in Dallas and his mother is a Daughter of the Republic of Texas. One of the accomplishments he is most proud of is being an Eagle Scout with Troop 72 since 1979. 

When he isn’t working, Dr. Ellis focuses on his wife and four children. He enjoys hunting, camping, kitesurfing, and beach activities with his family.

Ab Siadati, MD, FAANS, FACS, is an experienced Neurosurgeon at Fort Worth Brain & Spine Institute, where patients are treated like family. The practice has two offices in Fort Worth and additional offices in Weatherford, Texas, so that patients can choose the nearest location.

Dr. Siadati completed his internship in general surgery and residency in neurosurgery at Baylor College of Medicine (BCM), with enfolded complex spine and neuro-oncology-focused study at MD Anderson.

Dr. Siadati uses cutting-edge technology and advanced minimally invasive techniques to ensure optimal outcomes and quick recovery. His practice focuses on adult degenerative spine (cervical spine being his favorite), Deep Brain Stimulation (DBS) for movement disorders, nervous system tumors, trigeminal neuralgia, and Chiari malformation.

Patient care and patient education are his top priority. Whether it be a pre-operative or post-operative appointment, Dr. Siadati believes in providing compassionate care to patients and their families and will take the time needed to ease any worries and answer any questions the patient may have. 

For this, he has been chosen for Compassionate Doctor Award and Patient’s Choice Award multiple times. His expertise, innovation, and dedication have resulted in many patients with critical cases seeking his care and advice.

Voted on by his medical peers, Dr. Siadati has consistently been selected as a “Top Doc” in Neurosurgery by Fort Worth Magazine since its inception.

He is a current member of several professional organizations, including AANS, CNS, FACS, and TMA.

Dr. Siadati has lived most of his life in Texas, graduating from John Marshall High School in San Antonio in 1990. He and his wife, Maryam, have lived in the Dallas-Fort Worth (DFW) area since 2004, with all three of his children being born in Grapevine.

Samir B. Lapsiwala, MD, FAANS, FACS, is an experienced Neurosurgeon at Fort Worth Brain & Spine Institute, where patients are treated like family. The practice has offices in Fort Worth and additional offices in Granbury, and Lake Worth, Texas, so that patients can choose the nearest location.

Dr. Lapsiwala graduated Magma Cum Lauded from the University of California at San Diego with a degree in neuroscience. He then pursued his medical degree at Pennsylvania State University, followed by a seven-year neurosurgery residency at the University of Wisconsin at Madison.

During residency, Dr. Lapsiwala received many awards and grants, published numerous articles in peer-reviewed journals, and wrote chapters in textbooks.

After residency, he was privileged to complete a complex spine surgery fellowship at the Cleveland Clinic under the guidance of Dr. Edward Benzel. He was also granted the unique opportunity to train with spine surgery leaders in both orthopedics and neurosurgery fields. 

Dr. Lapsiwala has a large amount of experience dealing with Herniated Discs, Spinal Stenosis, and Spinal Fusion.

His treatment philosophy is, first and foremost, to care for his patients as if they were his family or friends. He strongly believes in exhausting all conservative treatment measures first, then taking the most minimally invasive approach if surgery is needed. 

Each patient has a unique story, complete with their own problems; therefore, their treatment plan must be equally unique. Dr. Lapsiwala’s goal for his patients is to create the proper treatment plan to get them back to enjoying their lives as quickly as possible.

Voted on by his medical peers, Dr. Lapsiwala has been selected as a “Top Doc” in Neurosurgery by Southlake Style Magazine in 2017.

Dr. Lapsiwala grew up in Los Angeles, California, but has called Dallas-Fort Worth (DFW) home since 2009. He and his wife have two children. When he is not working, Dr. Lapsiwala enjoys fishing, watching sports, and traveling.

Anthony W. Lee, MD, FAANS, FACS, is an experienced Neurosurgeon at Fort Worth Brain & Spine Institute, where patients are treated like family. The practice has two offices in Fort Worth and additional offices in Cleburne, Texas, so that patients can choose the nearest location.

Dr. Lee received his undergraduate degree and his doctorate of medicine and completed his internship at the University of the Philippines. He then attended Wayne State University in Michigan to complete his residency and spine and neuro-endovascular fellowship. Dr. Lee has special advanced training in neurovascular, endoscopic, and keyhole approaches.

His practice focuses on conditions in the brain and spine, specifically: brain tumors, pituitary tumors, brain aneurysms, brain arteriovenous malformation, Chiari malformation, trigeminal neuralgia, hemifacial spasms, spine tumors, cervical, lumbar and thoracic stenosis, lumbar spondylolisthesis and lumbar disc herniations.

Dr. Lee believes in providing compassionate care, understanding each patient’s story, and treating every patient as if they were a member of his own family. Dr. Lee also believes in being actively involved in the education of students and fellow physicians in the community concerning neurosurgical conditions.

Voted on by his medical peers, Dr. Lee has consistently been selected as a “Top Doc” in Neurosurgery by Fort Worth Magazine since its inception.

Dr. Lee was born in Manila, Philippines, and came to the United States in 2002. He enjoys spending time with his wife and their five children in his spare time.

Brent T. Alford, MD, FAANS, FACS, is a highly skilled and accomplished Neurosurgeon at Fort Worth Brain & Spine Institute, where patients are treated like family. 

Dr. Alford received his undergraduate degree in Finance from the University of Texas at Austin. He received his medical degree from the University of Texas Southwestern Medical Center. He completed his residency at the Division of Neurosurgery in the Department of Surgery at the University of Texas Medical Branch in Galveston.

His residency focused on neuro-oncology, complex spine surgery, and epilepsy surgery. Dr. Alford specializes in the nonoperative and surgical treatment of disorders of the brain, spine, and peripheral nerves. He provides comprehensive care for spinal disorders, from minimally invasive decompressions to extensive spinal reconstructions for deformity.

He also treats patients with neuro-oncology, epilepsy disorders, neuromodulation, and various other brain and spine disorders.

Dr. Alford believes in individualized care for each of his patients, and by taking adequate time to learn each person’s story, he can provide the very best care possible. Voted on by his medical peers, Dr. Alford has consistently been selected as a “Top Doc” in Neurosurgery by Fort Worth Magazine since its inception.

He was born and raised in Austin. He and his wife have three children. When he is not working, Dr. Alford enjoys hunting, fishing, sailing, and, most importantly, spending time with his family and attending his children’s extracurricular activities.

A native of the Tri-Cities, David Wiles, MD, received his bachelor of science from Auburn University, Al., and his doctorate of medicine from Tulane University School of Medicine, New Orleans, La. Following, Dr. Wiles completed his general surgery internship and a neurosurgery residency at the University of Tennessee, Memphis.

Board certified in neurosurgery, Dr. Wiles has trained under internationally-known spine surgeons, including Kevin Foley, MD, Maurice Smith, MD, and Peter Klara MD. Following his training, Dr. Wiles returned to the Tri-Cities where he established the East Tennessee Brain and Spine Center. This brought leading-edge neurosurgical care to those he knew and loved. Dr. Wiles has also been actively involved in the development of numerous spinal surgical techniques and devices.

Trained and experienced in Mazor Robotics, Dr. Wiles was the Director of the Neuroscience Department for a system that included 20 hospitals. Most notably, he has participated in several investigational studies with the Food & Drug Administration. Such experience has allowed him the honor of speaking at international meetings and serving on the Evaluation Committee for ARGOS, the European Association of Research Groups for Spinal Osteosynthesis.

Today, he is privileged to serve as a faculty member at teaching conferences held across the United States for the purpose of training spine surgeons and orthopedic and neurosurgical residents. A member of the American Association of Neurological Surgeons, the Congress of Neurosurgeons, the Joint Section on Spine and Peripheral Nerves, the North American Spine Society, the International Society for Advancement of Spinal Surgery, the Joint Section on Neurotrauma and Critical Care andthe International Meetings for Advanced Spinal Technologies.

Practicing since 1997, Dr. Wiles and his wife now make their home in Chattanooga.

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. 

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.