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 About Trauma

Washington Health’s Trauma Center provides 24/7 specialized, lifesaving care for critically injured patients. Our trauma center is staffed by specially trained professionals ready to handle life-threatening injuries, from motor vehicle accidents to serious falls.

In June 2022, WH proudly became one of Alameda County's level II trauma center, the first new designation since 1987. This marks a pivotal commitment to delivering critical, lifesaving care to our community, ensuring immediate and expert treatment in urgent health crises. Our level II trauma center meets the increasing trauma volume, driven by a growing population and the high number of patients transferred outside the county for trauma care.

Trauma Leadership & Specialists

Chet Morrison, MD

Chet Morrison, MD, FACS, FCCM
Trauma Medical Director

Dr. Chet Morrison is the Trauma Medical Director at Washington Health (WH) in Fremont, where he successfully led the launch of the Level II Trauma Center that opened to serve southern Alameda County on July 1, 2024.

With an impressive background that combines a double major in chemistry and biology from Cornell University and a medical degree from George Washington University School of Medicine, Dr. Morrison has developed a career marked by significant academic and professional achievements. His extensive training includes a categorical surgery internship and general surgery residency at Fitzsimons and William Beaumont Army Medical Centers, culminating in a fellowship in Trauma and Critical Care at the University of Maryland and R Adams Cowley Shock Trauma Center.

Dr. Morrison came to WH from Saginaw, Michigan, where he most recently served as the Trauma Medical Director and Department Chair at St Mary's/Ascension Hospital. Prior to Michigan, he served as an Attending Trauma Surgeon and Director of the Neurotrauma Intensive Care Unit at Lancaster General Hospital, and as an Assistant Professor and Director of Surgical Critical Care at Michigan State University. He has also held numerous leadership positions within the U.S. Army's medical units, including deployments in Iraq and Korea, where he earned accolades such as the Bronze Star and Meritorious Service Medal.

Beyond his clinical expertise, Dr. Morrison is an esteemed educator and contributor to medical education. He was an Associate Professor of Surgery at Central Michigan University School of Medicine and has been involved in various teaching and leadership roles in medical schools and hospitals. Dr. Morrison's dedication to advancing the field is evident through his membership on editorial boards and numerous committees, focusing on trauma performance improvement, critical care, and surgery education.

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Jennifer Kubisz

Jennifer Kubisz
Trauma Program Director

Jennifer Kubisz serves as the Trauma Program Director at Washington Health, where she began her tenure in April 2024 as the Trauma RN Process Improvement Coordinator.

With over 20 years of experience in the medical field, Jennifer's journey started in EMS within Alameda County and transitioned to a significant role at Regional Medical Center in San Jose as a Trauma RN PI Coordinator. Over the last decade, she has been pivotal in re-verifications and led her teams to national recognition for quality benchmarking and process improvement, achieving best practice accolades in an ACS survey. Currently, Jennifer is steering the Trauma Program towards a successful ACS verification in 2027.

Her educational background includes a bachelor's degree in Nursing from San Jose State University, and she is pursuing a master's degree in Nurse Education from Capella University. A lifelong Bay Area resident, Jennifer is deeply rooted in her community, advocating for children with special needs and epilepsy, and is actively involved in her son's school activities. She holds multiple certifications including ACLS, BLS, PALS, TNCC, and is a dedicated member of various professional trauma and emergency medical societies.

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Kranthi K. Achanta, MD

Kranthi K. Achanta, MD, FACS, MHA
General, Laparoscopic and Robotic Surgeon

Since 2001, Dr. Kranthi Achanta has been a leading general, laparoscopic, and robotic surgeon at Washington Health. He brings extensive experience across a broad range of general surgical procedures and is dedicated to delivering patient-focused, concierge-level, general surgical care.

Dr. Achanta is a fellowship-trained and board-certified surgeon specializing in laparoscopic, robotic, and general surgery. His expertise encompasses a wide array of surgical procedures, including robotic, laparoscopic, and open abdominal surgeries such as gallbladder removal, various hernia repairs, colon surgeries, splenectomy, and adrenalectomy. His practice also emphasizes breast surgery, colon and rectal surgery, endocrine surgery, esophageal reflux surgery, and gastric surgery. Dr. Achanta continually enhances patient care through innovative surgical techniques, earning his Certificate of Da Vinci Technology Training in May 2024 and training specifically on the Da Vinci Xi multiport robotic surgery system.

Dr. Achanta's medical journey began with an MBBS degree from Gandhi Medical College in Hyderabad, India. He then completed his General Surgery residency at Tufts University in Boston and pursued a fellowship in minimally invasive surgery at the University of Southern California.

Before joining Washington Health, Dr. Achanta honed his surgical skills at Deccan Pacific Medical Group and Kaiser Permanente Medical Center in Anaheim, California. At Washington Health, he has held numerous leadership positions, including Chairman of the Department of Surgery, Chief of Medical Staff, and Chairman of the Utilization Management Committee.

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Curt Comstock, MD

Curt Comstock, MD
Professor, UCSF   
Trauma & Problem Fractures

Dr. Curt Comstock is a Clinical Professor of Orthopedic Surgery at the University of California, San Francisco (UCSF) Department of Orthopaedic Surgery and a dedicated trauma surgeon with a profound commitment to patient care. Based at San Jose Regional Hospital, a level two trauma center, Dr. Comstock specializes in the treatment of traumatic injuries, with a primary focus on injured extremities and pelvises.

Dr. Comstock's surgical practice involves a wide range of cases, from complex and intricate reconstructions of severe traumatic injuries to more routine procedures. Collaborating closely with his medical partners, he ensures that each case is meticulously planned to provide the best possible outcome for the patient.

After completing his undergraduate studies at the University of Michigan, Dr. Comstock pursued his medical education and training, including a five-year residency program and a one-year orthopaedic traumatology fellowship at the University of Texas at Houston. Dr. Curt Comstock joined the faculty of the UCSF Department of Orthopaedic Surgery in 2017.

What Dr. Comstock finds most gratifying in his profession is the opportunity to care for patients who arrive with multiple fractures and head injuries, working tirelessly alongside the trauma service to repair injuries and enable patients to recover and regain their mobility.

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Anthony Ding, MD

Anthony Ding, MD
Associate Professor, UCSF   
Hand, Elbow and Upper Extremity   
Trauma & Problem Fractures

Dr. Ding joined the faculty at UCSF in 2018 and works primarily out of the UCSF/San Francisco General Hospital Orthopaedic Trauma Institute (OTI). His clinical interests include hand, upper extremity, and microvascular surgery. He is committed to high quality patient care and resident education.

Eldan Eichbaum, MD

Eldan Eichbaum, MD, FACS, FAANS
Medical Director of Spine Center

Dr. Eldan B. Eichbaum is a neurosurgeon specializing in complex and reconstructive spinal neurosurgery. A key member of Bell Neuroscience Institute of Silicon Valley at Washington Health, Dr. Eichbaum has dedicated much of his career to advancing neurosurgical practices in Fremont, California, where he currently serves as the Medical Director of the Spine Center.

Dr. Eichbaum completed his medical education with high honors at the University of California, San Francisco, followed by an intensive neurosurgical residency at the same institution. His commitment to specialized advancement in his field took him to the University of New Mexico, where he completed a fellowship in complex and reconstructive spinal neurosurgery. His board certification by the American Board of Neurological Surgery was earned in May 2004.

Dr. Eichbaum has held significant leadership positions including president of the Neurosurgical Society of America in 2023, and Chairman and Vice Chairman of the Department of Surgery at Santa Rosa Memorial Hospital. His professional affiliations include the American Association of Neurological Surgeons, the California Association of Neurological Surgeons, the Congress of Neurological Surgeons, and the American Medical Association.

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David Gendelberg, MD

David Gendelberg, MD
Trauma Medical Director   
Spine   
Trauma & Problem Fractures

Dr. Gendelberg is an orthopedic surgeon who specializes in complex spinal surgery and trauma. Based at Zuckerberg San Francisco General Hospital and Washington Health, his expertise covers a wide spectrum of orthopedic conditions with a primary focus on complex spinal surgeries, encompassing spinal trauma, degenerative disorders, deformities, infections, and oncology. Dr. Gendelberg is known for his commitment to incorporating minimally invasive techniques and directs the orthopedic trauma program at Washington Health.

In addition to his clinical responsibilities, Dr. Gendelberg invests a significant portion of his time in research aimed at improving treatment strategies for underserved populations. His research focuses on management of spinal injuries, delivering care to the underserved, minimally invasive techniques, and bone health.

After earning his medical degree at Rutgers-Robert Wood Johnson, Dr. Gendelberg completed a residency in orthopedic surgery at Penn State Hershey Medical Center. He completed fellowships in spine surgery at the University of Washington-Harborview Medical Center and in minimally invasive spinal surgery under Neel Anand MD at Cedars Sinai in Los Angeles.

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Kadeer M. Halimi, DO

Kadeer M. Halimi, DO
Medical Director, Washington Health Emergency Department

Dr. Kadeer M. Halimi currently serves as the Medical Director for both the Washington Health Emergency Department and the Tesla Onsite Clinic, and is a board member of the Emergency Physicians Associates (EPA). Dr. Halimi has held significant leadership roles, including Chair of the Department of Medicine and current Chair of the Department of Emergency Medicine. He has also served on and chaired many committees at Washington Health, demonstrating his broad involvement in hospital administration and improvement initiatives.

Dr. Halimi's educational journey began at the University of California, Davis, where he earned a Bachelor of Science in Psychology with a minor in Philosophy. He attended medical school at Western University of Health Sciences in Southern California and completed an Emergency Medicine residency at Texas A&M University. He has been board-certified in Emergency Medicine since 2005.

A Fremont native, Dr. Halimi remains deeply connected to his community. In his spare time, he serves as the Chief Medical Officer of Medikarma, a startup aiming to improve patient care management through secure communication and comprehensive workflow management.

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Amir Matityahu, MD

Amir Matityahu, MD
Professor, UCSF   
Trauma & Problem Fractures

Amir Matityahu was born in Israel and moved to Palo Alto, CA in 1978. He received his bachelor of science degree in Kinesiology from UCLA in 1992 and graduated from Hahnemann University Medical School in Philadelphia in 1997. He received his orthopaedic residency training from Maimonides Medical Center in Brooklyn, NY, and in 2002 completed a fellowship in orthopaedic traumatology at the Adams R. Cowley Shock Trauma Center.

In 2003, Dr. Matityahu joined the staff at UCSF/SFGH. He is presently the Director of Pelvis and Acetabular Trauma Reconstruction at San Francisco General Hospital and a Professor in the Department of Orthopaedics at UCSF. His clinical areas of interest are high-energy complex periarticular fractures, pelvis and acetabular fractures, and the polytraumatic patient with orthopaedic injuries. His research interests include the biomechanics of fracture fixation and the post-traumatic hip joint.

Dr. Matityahu is constantly developing innovative and minimally invasive surgical techniques to speed healing and return patients back to work and athletes back to the field more quickly. He values compassion, quality, integrity, teamwork, clinical research, and education for both patients and other physicians.

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Kevin Mitchell, MD

Kevin Mitchell, MD, FACS
Associate Medical Director, Trauma Program

Dr. Kevin J. Mitchell is the Trauma Associate Medical Director at Washington Health in Fremont, having joined just prior to the opening of the Level II Trauma Center on July 1, 2024.

Dr. Mitchell's exceptional capacity for learning gained him entry to Howard University's six-year Bachelor of Science-Medical Degree program, where he earned his bachelor's with magna cum laude distinction before completing his medical degree. He conducted his internship and residency at Northwestern University in Chicago, became Chief Resident in general surgery at Howard University Hospital, and then completed a fellowship in trauma and critical care at the Maryland Institute for Emergency Services Systems in Baltimore.

Prior to joining Washington Health, Dr. Mitchell served as the Director of Trauma Services and Co-director of Emergency Medical Services for SSM DePaul Health Center in St. Louis, MO, where he provided acute care surgery, surgical critical care, and trauma. He has served as a Clinical Assistant Professor of Surgery and site director for medical student surgery clerkship, and has co-authored numerous articles on surgical and trauma topics. He is a fellow of the American College of Surgeons.

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Masato Nagao, MD, PhD

Masato Nagao, MD, PhD
Professor, UCSF   
Physical Medicine and Rehabilitation   
Trauma & Problem Fractures

Masato Nagao, MD, PhD is a physiatrist, or physical medicine and rehabilitation specialist, who treats patients with nerve, muscle, bone, and joint injuries and helps patients restore functional ability. His expertise includes trauma and musculoskeletal rehabilitation, disorders of the peripheral nervous system, nerve conduction studies and electromyography, and pain management.

Dr. Nagao earned a medical degree and completed an orthopedic surgery residency at Sapporo Medical University in Japan, where he was appointed chief of hip and arthritis surgery. He completed a research fellowship in biomechanics at Johns Hopkins University and an arthroplasty fellowship at the Center for Joint Preservation and Replacement at Sinai Hospital in Baltimore. He then completed a physical medicine and rehabilitation residency at Albany Medical Center in New York, earning three separate board certifications: the American Board of Physical Medicine and Rehabilitation, American Board of Electrodiagnostic Medicine, and American Board of Pain Medicine.

Dr. Nagao is the co-director of the Orthopaedic Trauma Observership Program at the UCSF/ZSFG Orthopaedic Trauma Institute, which works in conjunction with the Institute for Global Orthopaedics and Traumatology. He is an outstanding teacher and has been in high demand as an invited speaker nationally and internationally.

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Rajiv Saigal, MD, PhD

Rajiv Saigal, MD, PhD, FAANS
Medical Director of Spinal Deformity and Spinal Tumors

Rajiv Saigal joined the neurosurgery team at Washington Health Medical Group and the Bell Neuroscience Institute of Silicon Valley in July 2021. He is also an associate professor at the University of California, San Francisco, and is board-certified by the American Board of Neurological Surgery.

Dr. Saigal is a neurosurgeon-scientist who specializes in spinal cord injury, neurotrauma, spinal deformity, spinal tumors, and minimally invasive techniques. His research focuses on bioengineering approaches for treating spinal cord injury, particularly electrical stimulation and techniques to optimize spinal cord perfusion. He chairs the North American Spine Society Section on Spinal Cord Injury.

Dr. Saigal completed neurosurgery residency at UCSF, followed by an orthopedic spine deformity fellowship at Scripps and the San Diego Spine Foundation, and a second spine fellowship at the University of Miami focusing on minimally invasive spine surgery. Prior to residency, he completed a PhD in medical engineering at the Harvard-MIT Division of Health Sciences and Technology and an MD at Tufts University School of Medicine. He is the recipient of numerous awards for research, teaching, and leadership, including the Global Spine Congress Best Papers and the Boldrey Young Investigator Award.

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Sandeep Kunwar, MD

Sandeep Kunwar, MD, FACS, FAANS
Medical Director, Bell Neuroscience Institute of Silicon Valley

Dr. Sandeep Kunwar is board-certified in neurosurgery and renowned for his work in minimally invasive neurosurgery. He played an instrumental role in the evolution of the Bell Neuroscience Institute of Silicon Valley, where he now serves as medical director. Dr. Kunwar specializes in minimally invasive brain and spine surgery and his pioneering research in drug delivery to the brain has brought him national and international recognition. He has performed more than 2,500 minimally invasive operations and has developed a minimally-invasive approach to skull-based tumors and improved access to the spine.

In 1999, Dr. Kunwar joined the faculty of the Department of Neurological Surgery at UCSF, developing a busy clinical and research program. In 2006, he began his private practice in Fremont, California and joined the medical community at Washington Health, while continuing to serve as an Associate Professor of Neurological Surgery on the faculty at UCSF. He was selected by world-renowned neurosurgeon Dr. Charles Wilson to take over his pituitary surgery practice after his retirement, and now has one of the largest pituitary surgical services in the world.

Dr. Kunwar is a member of Alpha Omega Alpha medical society and is a recipient of the Preuss Resident Research Award and the Ronald Bittner Tumor Award from the American Association of Neurological Surgeons and the Congress of Neurological Surgeons. He has served as the lead principal investigator for a number of international multi-institutional clinical trials, including the largest surgical based drug trial for brain tumors.

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Mark Chu Xu, MD

Mark Chu Xu, MD
Assistant Professor, UCSF   
Spine   
Trauma & Problem Fractures

Dr. Mark Xu is an orthopedic surgeon with dual subspecialty training in orthopedic trauma and spine surgery. His clinical interests include managing traumatic injuries of the extremities and pelvis, as well as treating degenerative and traumatic spinal pathology. He takes a comprehensive approach to assessing each patient and emphasizes shared decision making for treatment, both nonsurgical and surgical.

He completed his medical school and orthopedic surgery residency in Winnipeg, Manitoba, Canada, followed by an orthopedic trauma fellowship at the University of British Columbia-Vancouver General Hospital and a combined orthopaedic and neurosurgical spine surgery fellowship at the University of Toronto-Toronto Western Hospital.

Dr. Xu's research focuses on clinical outcomes and biomechanical studies comparing surgical fixation techniques. He has received numerous grants for his studies including an AO Trauma North America Fellow Research Grant. He is certified by the Royal College of Physicians and Surgeons of Canada and board eligible by the American Board of Orthopedic Surgery. Dr. Xu sees patients at Washington Health and Zuckerberg San Francisco General Hospital.

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