ARROWHEAD NEUROSURGICAL MEDICAL GROUP, INC
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Clinical and Surgical Excellence

Meet our team of professionals
NEUROSURGEON'S CURRICULUM VITAE CLICK HERE
NEUROLOGIST'S CURRICULUM VITAE CLICK HERE
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Javed Siddiqi, HBSc, MD, DPhil (Oxon), FRCSC, FACS, FAANS, FCNS

Dr. Siddiqi is a board-certified neurosurgeon and is the founding member of ANMG.  He earned his undergraduate and medical degrees from the University of Western Ontario​, London, ONT.  He completed his doctorate at Oxford University on a Rhodes Scholarship.  He completed his neurosurgery residency at the University of Western Ontario, and then went on to complete at skull base and vascular fellowship under Dr. Yasargil at the University of Arkansas Center for Medical Sciences, Little Rock, AK.  Aside from past and present departmental chief positions in neurosurgery at our local hospitals, ​he is now Department Chair of Neurosurgery​/Surgery at the newly created California University of Sciences and Medicine Medical School at ARMC.  He is and advisor and specialty expert for the Medical Board of California.  He has been recognized by the San Bernardino County Medical Society with their "Outstanding Contribution to Medicine" award in 2010, as well as the only MD to receive the Presidential Citation from the American College of Osteopathic Surgeons, and AOA House of Delegates.  He served as the 2020 President of the California Association of Neurological Surgeons (CANS).
LOCATIONS
​SERVED:

ARMC
RUHS
REDLANDS
EISENHOWER
​DRMC
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Dan Miulli, DO, MS, FACOS

Dr. Miulli is a board-certified neurosurgeon and is the Director of the Neurosurgery Residency Program at RUHS.  He obtained his B.S. and M.S. degrees from the University of Illinois, Chicago, and his medical degree from Midwestern University Chicago College of Osteopathic Medicine, Chicago, IL.  He completed his surgical internship at Chicago Osteopathic Health System, Chicago, IL, and his neurosurgical residency at Philadelphia College of Osteopathic Medicine, Philadelphia, PA, and was awarded Resident of the Year in 1994.  He then practiced for many years in Minnesota where he helped found the St. Cloud Neurological Institute.  He is a past President, Secretary, and Treasurer of the American College of Osteopathic Surgeons-Neurosurgical Section, Vice Chairman of ACOS Neurosurgery Disciplinary Residency Review Committee, and Editor of the Journal of American Osteopathic Neurological Surgery.  He is a general neurosurgeon with expertise in skull base and microneurosurgery.
LOCATIONS SERVED:

ARMC
​RUHS
​REDLANDS
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Margaret Wacker, MD, FAANS, FCNS

Dr. Wacker is a board-certified neurosurgeon.  She earned her medical degree from the University of Washington School of Medicine, Seattle, WA.  She completed her surgical internship at the University of Southern California Medical Center, Los Angeles, CA, and her neurosurgical residency at Loma Linda University Medical Center, Loma Linda, CA.   She is a member of the Congress of Neurosurgeons (CNS), and the American Association of Neurological Surgeons (AANS).  
LOCATIONS SERVED:

RUHS
ARMC
REDLANDS
GO TO DR. WACKER'S CURRICULUM VITAE
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Glenn Fischberg, MD

Dr Fischberg is a board-certified neurologist/neurocritical care intensivist and is the Director of Neurocritical Care and Associate Neurology Residency Director at Arrowhead Regional Medical Center.  He is also an Assistant Professor of Neurology at California University of Science and Medicine, Colton, CA.  He received both his undergraduate and medical degrees from New York University, New York, NY.  He completed his Neurology residency at the University of Miami Miller School of Medicine, Miami, FL.  He completed a stroke fellowship from Keck School of Medicine of the University of Southern California, Los Angeles, CA and a UCNS-accredited neurocritical care fellowship at Jefferson Medical College of Thomas Jefferson University, Philadelphia, PA.
LOCATIONS
SERVED:
ARMC
REDLANDS
​EISENHOWER
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Raed Sweiss, DO, FACOS

Dr. Sweiss is a board-certified neurosurgeon with fellowship training in skull base/cerebrovascular surgery and neuro-trauma.  He is a graduate of Virginia Polytechnic Institute and State University, Blacksburg, Virginia, and earned his medical degree from the Virginia College of Osteopathic Medicine, Blacksburg, Virginia.  He completed his neurosurgery residency at Riverside University Health System Medical Center in Moreno Valley, California.  He completed a fellowship in neuro-trauma and went on to complete a second fellowship in skull base/cerebrovascular surgery at Oregon Health and Science University in Portland, Oregon.  He is currently Assistant Professor of Neurosurgery at Western University of Health Sciences and California University of Science and Medicine as well as core faculty in the Riverside University Health System Medical Center Neurosurgery Residency Program.  He is a member of the North American Skull Base Society (NASBS), California Association of Neurological Surgeons (CANS), American College of Osteopathic Surgeons (ACOS), American Osteopathic Association (AOA), and a Deputy Editor of Contemporary Reviews in Neurology and Neurosurgery.  He is currently the Chairman of the Department of Neurosurgery at Riverside University Health Sciences Medical Center.
LOCATIONS SERVED:

ARMC
RUHS
REDLANDS
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 Anthony Alastra, MD, FAANS, FCNS, FACS, CNSENDORFP

Dr. Alastra is an ABNS board-certified neurological surgeon and ABNS board-certified Focused Practice neuro-interventionalist with specialization in vascular and general neurosurgery, endovascular neurosurgery, minimally-invasive spinal surgery, and surgical management of chronic pain.  He is a graduate of The Johns Hopkins University, Baltimore, MD, Case Western University Medical School, Cleveland, OH, and trained in neurosurgery at Vanderbilt University, Nashville, TN.  He completed his neuro-interventional fellowship training from New York University Medical Center, New York, NY.  He has held positions of Clinical Assistant Professor of Neurosurgery, Department of Neurosurgery at both New York University School of Medicine Langone Medical Center, New York, NY, and College of Medicine, State University of New York Downstate Medical Center, Brooklyn, NY.  Dr. Alastra is Associate Program Director for the Neurosurgery Residency Program at Arrowhead Regional Medical Center (ARMC), Neurosurgery Section Chief at Desert Regional Medical Center (DRMC), and Medical Director of Neurosurgery and Neurointerventional Radiology at Eisenhower Medical Center (EMC).  He is the Neurointervenional Enterprise Director for ANMG.  He is a member and Fellow of the American Association of Neurological Surgery (AANS) and American College of Surgery (ACS), member of the Congress of Neurological Surgery (CNS), Society for NeuroInterventional Surgery (SNIS), North American Spine Society (NASS), and California Association of Neurosurgery (CANS) among others.
LOCATIONS
SERVED:

EISENHOWER
DRMC
ARMC
​RUHS
REDLANDS
LEAVE SITE AND GO TO DR. ALASTRA'S WEBPAGE
GO TO DR. ALASTRA'S CURRICULUM VITAE
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Emilio Tayag, MD, FAANS, FCNS, FAAN

Dr. Tayag is a board-certified neurosurgeon, neurologist, and neurointerventionalist.  He obtained his medical degree from the University of the East College of Medicine, Quezon City, Phillipines, and completed his internship at Montefiore New Rochelle Hospital, New Rochelle, NY.  He completed his neurology residency at The ​University of Southern California Medical Center, Los Angeles, CA, and his neurosurgery residency at Tulane University, New Orleans, LA.  He completed his neurointerventional fellowship at Desert Regional Medical Center, Palm Springs, CA.  He is a member of the American Association of Neurological Surgery (AANS), Congress of Neurological Surgery (CNS), and Diplomate of the American Board of Psychiatry and Neurology.
LOCATIONS
​SERVED:

RUHS
REDLANDS
​ARMC
​DRMC
EISENHOWER
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Michael Schiraldi, MD, PhD

Dr. Schiraldi is a board-eligible neurosurgeon with interests in general and endovascular neurosurgery.  A graduate of Fordham University, New York City,NY, and Temple University Medical School, Philadelphia, PA, he completed his neurosurgery residency and endovascular fellowship at Cedars-Sinai Medical Center in Los Angeles, CA.  As a surgeon-scientist, Dr. Schiraldi was involved in initial trials of extracranial-intracranial bypass for stroke prevention.  He has unique interest and training in operative treatments for headaches caused by spontaneous intracranial hypotension or CSF leak, as well as training in the treatment of trigeminal neuralgia, hemifacial spasm, and vascular malformations of the brain and spine.
LOCATIONS
​SERVED:

ARMC
​REDLANDS
RUHS
DRMC
​EISENHOWER
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Jason Duong, DO, FACS

Dr. Duong is a board-certified neurosurgeon with fellowship training in cranial and complex spinal oncology.  He is a graduate from University of California, San Diego and received his medical degree at Touro University in California. He completed his neurosurgical residency at Riverside University Health System in Moreno Valley, California and completed a fellowship at City of Hope in Duarte, California in neurosurgery and neuro-oncology with nationally recognized experts and advanced clinical trials.  He is a member of the Society of Neuro-oncology (SNO), American Osteopathic Association (AOA), American College of Osteopathic Surgeons (ACOS), American Association of Neurological Surgeons (AANS), Congress of Neurological Surgeons (CNS). Dr Duong is currently the Vice-Chairman of the Neurosurgery Department at Riverside University Health Sciences Medical Center.
LOCATIONS SERVED:

​ARMC
​RUHS
​REDLANDS
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Le Treice Keiyta Irving, MD

Dr Irving is a board-certified neurologist with fellowship training in epilepsy and neurocritical care.  She completed her medical degree at the Ohio State University College of Medicine, Columbus, OH.  She completed her neurology residency and epilepsy fellowships at the University of Miami/Jackson Health System, Miami, FL.
LOCATIONS
SERVED:
ARMC
​REDLANDS
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Stephen F. Shafizadeh, MD, PhD, DC, FAANS, FCNS

Dr Shafizadeh is an ABNS board-certified neurosurgeon-scientist with fellowship and advanced neurosurgical training in skull-base and open cerebrovascular surgery as well as microneurosurgery. Dr. Shafizadeh had the privilege of receiving his first fellowship and advanced surgical training under world-renowned neurosurgeons, Dr. H. Hunt Batjer, Bernard R. Bendok, and James P. Chandler, in cerebrovascular and skull base surgery. Dr. Shafizadeh proceeded with his second fellowship under world-renowned neurosurgeon, Dr. Ali Krisht, where he continued under his tutelage for over a decade assisting in teaching neurosurgeons from around the country and throughout the world through cadaveric and live surgical courses. Dr Shafizadeh also has additional training in conservative and operative management of spinal disorders including spinal instrumentation for deformity and degeneration.  Dr. Shafizadeh has a keen interest in resident and medical student education and helping advance the next generation of neurosurgical excellence.
Dr. Shafizadeh’s clinical and surgical expertise and interests are in pituitary, vestibular, and skull base tumors; primary and metastatic brain tumors; cerebral aneurysms; vascular malformations; extracranial to intracranial revascularization/bypass; surgical management of trigeminal neuralgia and hemi-facial spasm; Chiari malformation; cranial and spinal trauma; and skull base fractures and reconstruction.
Dr. Shafizadeh completed the highly competitive dual degree MD and PhD program at The Medical University of South Carolina where his PhD dissertation was in improved survival following ischemia-reperfusion injury. Dr. Shafizadeh completed his internship at University of Chicago; residency at Northwestern University; advanced surgical training/fellowships at Northwestern University and ANI. Dr. Shafizadeh is an assistant professor at the California University of Science and Medicine in the department of Medical Education. Dr. Shafizadeh’s professional memberships have included the American Association of Neurological Association [AANS] where he is also a fellow, Congress of Neurological Association [CNS], and California Association of Neurological Surgeons [CANS].Dr. Shafizadeh has received numerous surgical, clinical, research, and patient care awards. 
Dr. Shafizadeh is driven by the understanding that one’s work is a form of worship and as such must be offered at the greatest level of excellence and humility. 

LOCATIONS SERVED:

REDLANDS
ARMC
RUHS
EISENHOWER
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Navpreet Bains, MBA, DO

Dr Bains is a board-eligible neurologist with specialization in endovascular surgical neuroradiology.  She is a graduate of San Jose State University and received her medical degree from Kansas City University of Medicine and Biosciences.  She completed her neurology training, vascular neurology fellowship, and endovascular fellowship all from the University of Missouri Medical Center-Columbia, Columbia, MO
LOCATIONS
SERVED:
ARMC
REDLANDS
​EISENHOWER
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Eric Whitney, DO

Dr Whitney is a board-eligible neurosurgeon with a focus on general neurosurgery and skull base neurosurgery.  He is a graduate of Liberty College of Osteopathic Medicine and completed his neurosurgical training at Arrowhead Regional Medical Center/Desert Regional Medical Center, Colton/Palm Springs, CA.  
LOCATIONS
SERVED:
EISENHOWER
ARMC
REDLANDS
​RUHS
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James Fowler, DO

Dr Fowler is a board-eligible neurosurgeon with a focus on general neurosurgery and endovascular neurosurgery.  He is a graduate of Kansas City University of Medicine and Biosciences, Kansas City, MO and completed his neurosurgical training at Arrowhead Regional Medical Center/Desert Regional Medical Center, Colton/Palm Springs, CA.  He completed his endovascular neurosurgery fellowship from Hartford Hospital, Hartford, CT.
LOCATIONS
SERVED:
EISENHOWER
ARMC
REDLANDS
​RUHS
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Rajan Chopra, MD

Dr. Chopra is a board-certified neurologist with interests in general neurology, stroke, and headache disorders.  He completed his undergraduate studies from the University of California, Irvine and earned his medical degree from Saba University School of Medicine, Caribbean Netherlands.  He completed his internship and neurology residency at West Virginia University Health Sciences Center, Morgantown, West Virginia.  He is certified by the American Board of Psychiatry and Neurology, and is a member of the American Academy of Neurology (AAN) and the American Heart Association (AHA).
LOCATIONS SERVED:

Community Hospital of San Bernardino
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Cynthia Soto, MD

 Dr. Soto is a board-certified neurologist with interest in general neurology. ​She earned her medical degree from Boston University School of Medicine, Boston, MA, and completed her internship and neurology training at Yale-New Haven Hospital, New Haven, CT.  She is certified by the American Board of Psychiatry and Neurology. 
LOCATIONS
SERVED:

​Community Hospital of San Bernardino
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Philip Ente, MD

Dr. Ente is a board-certified neurologist with interests in general neurology and clinical neurophysiology.  He earned his medical degree from the Universite de Pierre et Marie Curie (Paris VI), Paris, FR, and completed his neurology internship and residency at the Medical College of Pennsylvania Hospitals, Philadelphia, PA.  He completed a fellowship in clinical neurophysiology at Thomas Jefferson University Medical Center, Philadelphia, PA.  He is certified by the American Board of Psychiatry and Neurology.
LOCATIONS
SERVED:

REDLANDS
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Natasha Stephanie Plantak, PA-C, MPH

Natasha Plantak is a board certified physician assistant through the National Commission on Certification of Physician Assistants (NCCPA) and holds her PA-C license through the state of California Physician Assistant Board. She has a rich and diverse background, which reflects her multifaceted interests and passions. She initially worked as an art curator and an archeological excavationist, but found that her true passion lies in healthcare. She then obtained her graduate degrees (Master of Public Health and Master of Physician Assistant Sciences) at Loma Linda University. She trained at Johns Hopkins University, where she completed a clinical fellowship in hospital medicine. She has experience in inpatient internal medicine, hospital medicine, and cardiopulmonary critical care. She holds active memberships with the American Academy of Physician Assistants (AAPA), California Academy of Physician Assistants (CAPA), Society of Hospital Medicine (SHM), and Neurocritical Care Society (NCS). She is very excited to be a part of the ANMG team and is passionate about providing whole person compassionate care.
LOCATIONS SERVED:

EISENHOWER
​DRMC
ARMC
REDLANDS
​RUHS
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Natalie Hagan, NP

LOCATIONS
SERVED:
Natalie Hagan is a board-certified Nurse Practitioner through American Association of Critical-Care Nurses (AACN). She earned her master’s degree through Maryville University- St. Louis. Her eight years of nursing experience helped her gain insight into caring for patients suffering from chronic neurological conditions, including hemorrhagic stroke, ischemic stroke, seizures, and tumor resections. She has worked with many of the members of the ANMG team while working in the critical care unit and is happy to be joining the team as a fellow provider.
REDLANDS
​ARMC
​RUHS
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  • HOME
  • ABOUT ANMG
  • OUR TEAM
  • CONTACT US
  • EVENTS & NOTICES
  • SECOND OPINION PROGRAM