School of Medicine
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Dáibhid Ó Maoiléidigh, PhD
Assistant Professor of Otolaryngology - Head & Neck Surgery (OHNS)
Current Research and Scholarly InterestsThe Ó Maoiléidigh group employs mathematical and computational approaches to better understand normal hearing and hearing impairment. Because complete restoration of auditory function by artificial devices or regenerative treatments will only be possible when experiments and computational modeling align, we work closely with experimental laboratories. Our goal is to understand contemporary experimental observations, to make experimentally testable predictions, and to motivate new experiments. We are pursuing several projects.
Auditory and balance organs rely on hair cells to convert mechanical vibrations into electrical signals for transmission to the brain. In response to the quietest sounds we can hear, the hair cell's mechanical sensor, the hair bundle, moves by less than one-billionth of a meter. To determine how this astounding sensitivity is possible, we construct computational models of hair-bundle mechanics. By comparing models with experimental observations, we are learning how a hair bundle's geometry, material properties, and ability to move spontaneously determine its function.
The cochlea contains the auditory organ that houses the sensory hair cells in mammals. Vibrations in the cochlea arising from sound are amplified more than a thousandfold by the ear's active process. New experimental techniques have additionally revealed that the cochlea vibrates in a complex manner in response to sound. We use computational models to interpret these observations and to make hypotheses about how the cochlea works.
Dale Gene O'Brien
Adjunct Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioDale O’Brien, MD, MPH is adjunct faculty at the Stanford University School of Medicine in the Primary Care and Population Health Division. He founded several medical clinics for vulnerable populations in under-resourced areas of northern California where he has been a practicing physician for more than four decades.
A graduate of the University of Missouri School of Medicine, he took postgraduate training at the Oregon Health & Science University, and the University of California (San Francisco) / University of California School of Public Health. He is board certified by the American Board of Family Medicine and by the American Board of Preventive Medicine.
Dr. O'Brien treated hippies at the White Bird Clinic in Eugene, Oregon in the mid-70s; served as the acting Health Officer of the Shasta County Health Department in California; and spent two years in the early 80s as an affiliate of the European Branch Headquarters of the World Health Organization in Denmark.
As the Executive Director of the nonprofit Cancer Patients Alliance (CPA) since 2001, Dr. O’Brien and his team have advocated for and supported low-income Latinx community members, immigrants and farm workers with cancer in the Salinas Valley agricultural region of Monterey County, California.
Dr. O’Brien was Co-Principal Investigator of the Stanford Cancer Institute's Developmental Research Award in Translational Science, "Building an Academic-Community Partnership to Understand and Address Barriers to Cancer Care in the Salinas Valley Region of Monterey County," 2010 – 2015.
CPA has trained a number of Stanford University medical and post-doctoral students on behalf of the Valley Fellowship Program beginning in 2010 until the present.
Dr. O'Brien was a member of the Stanford / Medable team that developed the cancer aftercare app called TOGETHERCare - per NIH / NCI (SBIR 363) Phase 1 and 2 grants from 9/18/2017 until 9/30/2022.
Dr. O’Brien was on the Stanford-based research team in 2018 that piloted and studied the efficacy of the “Healthkey” behavioral health app for SAMHSA, CDC and the Council of State and Territorial Epidemiologists.
Beginning 2019, he was Co-Principal Investigator with the Stanford University group that has helped reduce cancer disparities by increasing access to the emerging DNA technologies - and facilitating cultural translation in Monterey County - pursuant to 4-year support from the California Initiative to Advance Precision Medicine.
In 2021, CPA received a 3-year grant award from the Robert Wood Johnson Foundation to further their advocacy work with the Latinx community and farm workers with cancer in the Salinas Valley.
In June 2021, CPA was selected by the California GOTV medical academic consortium including the Stanford University School of Medicine as led by UCLA - to conduct the "Get Out the Vaccine to Stop Covid-19" initiative for low-income populations in Monterey County, California.
Since 2016 Dr. O'Brien has been on the Institutional Review Board of Clinica de Salud del Valle de Salinas. He is currently a member of the Stanford Cancer Institute Community Advisory Board. Dr. O’Brien is a past editor of the Berkeley Wellness Letter, Medicine on the Net and Cancer Informatics.
Lucy Erin O'Brien
Associate Professor of Molecular and Cellular Physiology
Current Research and Scholarly InterestsMany adult organs tune their functional capacity to variable levels of physiologic demand. Adaptive organ resizing breaks the allometry of the body plan that was established during development, suggesting that it occurs through different mechanisms. Emerging evidence points to stem cells as key players in these mechanisms. We use the Drosophila midgut, a stem-cell based organ analogous to the vertebrate small intestine, as a simple model to uncover the rules that govern adaptive remodeling.
Arline and Pete Harman Professor for the Chair in the Department of Pediatrics in the School of Medicine, Emeritus
Current Research and Scholarly InterestsClinical:
Pulmonary edema, acute respiratory distress syndromes (ARDS), hyaline membrane disease (HMD), bronchopulmonary dysplasia (BPD)
Lung epithelial sodium transport
Genetic influences on the development of BPD
Assistant Professor of Biology
Current Research and Scholarly InterestsThe O'Connell lab studies how genetic and environmental factors contribute to biological diversity and adaptation. We are particularly interested in understanding (1) how behavior evolves through changes in brain function and (2) how animal physiology evolves through repurposing existing cellular components.
Director, Spectrum, Senior Associate Dean, Research and Lowell W. and Josephine Q. Berry Professor
Current Research and Scholarly InterestsDr. O'Hara's research aims to investigate how cognitive information processing deficits subserve affective symptoms in psychiatric disorders, and interact with key brain networks integral to these disorders. To do so, she has implemented a translational, interdisciplinary program that encompasses cellular models, brain and behavioral assays of affective and cognitive information processing systems in psychiatric disorders across the lifespan.
Clinical Assistant Professor, Pathology
Current Research and Scholarly InterestsDr. Oak received her MD and PhD from University of California, Irvine, and completed her anatomic pathology and clinical pathology residency, hematopathology fellowship, and transfusion medicine fellowship at Stanford University. Her research and clinical interests include clinical assay development for tumor immunophenotyping, lymphocyte subset monitoring, and immunotherapy target antigen assessment in a variety of hematologic and immunologic disorders. As director of a clinical flow cytometry laboratory, she oversees the design, validation, and implementation of various immunophenotyping assays in addition to ensuring quality assurance and regulatory compliance for CLIA certification.
Clinical Professor, Anesthesiology, Perioperative and Pain Medicine
BioDr Oakes is a Clinical Professor at Stanford School of Medicine with over 17 years of clinical experience in cardiothoracic anesthesiology. Dr. Oakes is Associate Dean of Post Graduate Medical Education and the Stanford Center of CME and Vice Chair of Clinical Educator Affairs in the Department of Anesthesiology.
The focus of her academic work has been the education and training of anesthesiologists at all levels of practice. In 2007 developed an education pathway for Stanford anesthesiology residents to learn perioperative echocardiography, one of the first programs of its kind nationally. She has since taught echocardiography to medical students, residents and fellows and lectures nationally on a range of topics related to transesophageal echocardiography, cardiothoracic anesthesiology, and medical education. In 2017, she was appointed Program Director of the Stanford Adult Cardiothoracic Anesthesiology Fellowship, and, under her 6 years of leadership, the program expanded from 4 fellows to 8 fellows and became widely recognized as one of the highest quality and most sought after programs nationally, consistently attracting a highly diverse group of fellowship candidates.
In 2018 Dr. Oakes was appointed Associate Dean of Postgraduate Medical Education and took over leadership of the Stanford Center of Continue Medical Education. Under her leadership the center has greatly expanded its programming and impact and Stanford CME is now universally regarded as the academic leader in continuing medical education. In addition to providing traditional meeting services and program accreditation, the office has taken the lead on several innovative educational programs including a statewide effort to that provided training to providers in over 1000 nursing homes on protecting their elderly residents from COVID, a virtual digital conference AI + Health reaching over 1000 participants, and several programs addressing health care disparities and justice, equity, diversity and inclusion efforts.
Dr. Oakes is a passionate mentor to both trainees and colleagues and has created multiple programs to support physician professional development including most recently, the Stanford CME Physician Leadership Certificate Program, a 6-month cohort-based leadership training for aspiring and developing physician leaders. She also co-founded and chairs the SCA Women in Cardiothoracic Anesthesiology (WICTA) Special Interest Group and has been recognized for her work supporting women medical professionals with the 2021Women in Medicine (WIM) #SheForShe Award and the 2023 WICTA “SHE LEADS” Award. Dr. Oakes is a recognized leader in her field and elected member of the Association of University Anesthesiologists (AUA).
Professor of Surgery at the Santa Clara Valley Medical Center, Emeritus
Current Research and Scholarly InterestsTrauma, especially splenic and thoracic
Assistant Professor of Anesthesiology, Perioperative and Pain Medicine (Adult MSD)
Current Research and Scholarly InterestsI am primarily working at the Cardiovascular Institute (Director Joseph Wu, MD, PhD), studying the effect of different anesthetics on human induced pluripotent stem cells (hiPSC). Considering the current opioid epidemic, I am currently focusing on the effect of chronic opioid exposure on endothelial and cardiac function.
Associate Professor of Obstetrics and Gynecology and, by courtesy, of Epidemiology and Population Health
BioJuno Obedin-Maliver, MD, MPH, MAS, FACOG (she/her/hers) is an Associate Professor in the Department of Obstetrics and Gynecology at Stanford University School of Medicine.
Dr. Juno Obedin-Maliver is a board-certified obstetrician/gynecologist who provides excellent clinical care and strives to advance scientific knowledge through her research.
She practices full-spectrum gynecology including outpatient, in-patient, operative, and emergency care services. This specifically includes collaborative management of cervical dysplasia and abnormal pap smears, abnormal uterine bleeding, contraception and family planning, pelvic pain, abnormal discharge, sexually transmitted infection testing and treatment, and more. She specializes in the gynecological and reproductive health care needs of sexual and gender minority people which include but are not limited to lesbian, gay, bisexual, transgender, queer and questioning (LGBTQ+) people. This interest and experience drives her research interests towards promoting the health and well-being and equity of LGBTQ people.
Dr. Obedin-Maliver, is the Co-Director of The PRIDE Study (pridestudy.org), a multi-site online prospective longitudinal cohort of sexual and gender minority individuals based at Stanford. She also serves on the medical advisory board of the University of California San Francisco Center of Excellence for Transgender Health and is helping to author the next version of the World Professional Association for Transgender Health (WPATH) Standards of Care. Dr. Obedin-Maliver has also been active in health policy including involvement in helping to legally redefine consideration of sexually intimate partner status and to remove the Medicare Non-Coverage Determination ruling on gender -affirming surgeries.
For more information about her research and career please see: pridestudy.org and http://med.stanford.edu/obedin-maliver.html
Professor of Education
Current Research and Scholarly InterestsAdaptation, resilience, and developmental psychopathology of disadvantaged children populations; Stress reactivity and biological sensitivity to contextual influences; Executive function and self-regulatory abilities; Effects of risk, adversity, and social status on children’s development.
Associate Professor of Epidemiology and Population Health
Current Research and Scholarly InterestsMultilevel - from cells to society - epidemiologic study of healthy aging
Oyindamola Ikepo Ogunlaja
Clinical Assistant Professor, Neurology & Neurological Sciences
BioDr. Ogunlaja is a board-certified, fellowship-trained neurologist. She provides patient care in the Stanford Headache Clinic. She is an assistant professor in the Department of Neurology, Headache Division.
Her specialized skills include Botox therapy for chronic migraine, trigger point injection procedures, and occipital nerve blocks.
Her prior experience includes serving as a consultant neurologist at King’s College Hospital in London.
Dr. Ogunlaja was a clinical research fellow in the Headache Group at King’s College. She was a physician member of the Dementia Consensus Panel of the Health and Aging in Africa Study.
She also conducted research at the Unit of Health-Care Epidemiology in the University of Oxford’s Department of Public Health. She investigated the epidemiology of patients hospitalized for sickle cell disease in England.
Dr. Ogunlaja has published in peer-reviewed journals including Headache and Current Pain and Headache Reports. She has presented her research findings to her peers at the International Headache Conference.
She is a member of the American Headache Society.
Maurice M. Ohayon, MD, DSc, PhD
Professor of Psychiatry and Behavioral Sciences (Sleep Medicine)
Current Research and Scholarly InterestsMain focus is epidemiology of sleep and psychiatric disorders in the general population and clinical settings: 1)sleep habits and patterns; 2) prevalence, diagnosis, co-morbidity, treatment and Public Health impact of sleep disorders; 3) pain, posttraumatic stress disorder, social phobia, panic disorder and generalized anxiety; 4) epidemiology of narcolepsy and hypersomnia.
David E. Oji
Clinical Assistant Professor, Orthopaedic Surgery
BioDr. David Oji is a board certified and fellowship trained orthopaedic surgeon specializing in the operative and non-operative treatment of all aspects of foot and ankle disorders. After finishing his orthopaedic surgery residency at The Johns Hopkins Hospital, he did his fellowship at Union Memorial Hospital in Baltimore, Maryland under the leadership of Dr. Lew Schon, the former president of the American Orthopaedic Foot and Ankle Society. There he underwent advanced training in the forefront of foot and ankle surgery including total ankle replacements, use of stem cells to promote healing of acute and chronic conditions, non-fusion techniques of great toe arthritis, and complex ankle and foot reconstruction.
During his training, he assisted in treating the Baltimore Orioles and amateur ballet dancers. Dr. Oji also took part in conducting advanced biomechanical and clinical research and has written chapters in textbooks with topics ranging from arthroscopic treatment of talar cartilage defects to the diabetic foot.
After fellowship, he was in private practice working closely with the community as the team physicians for many of the local high school sports teams.
In June of 2017, Dr. Oji joined the Department of Orthopaedic Surgery at Stanford University School of Medicine as a Clinical Assistant Professor. In addition to his usual clinical and educational responsibilities, he is also one of the team physicians for Stanford University Athletic programs.
Since starting at Stanford, he has been on the forefront of ankle and foot surgery. He has performed the first out patient total ankle replacement and the first total talar replacement at Stanford. He is an advocate of minimally invasive ankle and foot surgery performing one of the first MIS (minimally invasive surgery) bunion surgeries in the Bay Area. Whenever possible, the smallest incision and the least invasive approach will be done to allow the patient to heal faster including tendosopy, small joint arthroscopy, endoscopic Haglund's resection, minimally invasive osteotomy, and minimally invasive great toe cheilectomy.
He has a special focus in the treatment of ankle and foot orthopaedic sports injuries such as chronic ankle instability, cartilage injuries, Achilles injuries, using surgery only as a last resort to return the patient to peak athletic form.
In addition, he has extensive experience in complex ankle and foot reconstruction such as ankle replacements, flatfeet reconstruction, fusions of the foot and hindfoot, and Charcot foot/ankle reconstruction.
Fernando Fabian Okonski
Clinical Assistant Professor, Anesthesiology, Perioperative and Pain Medicine
BioDr. Okonski is an anesthesiologist specializing in pediatric anesthesia, regional anesthesia and acute pain management. He comes to Stanford after two decades of experience working in a tertiary care private practice where he led the pediatric anesthesia team. Additionally, he was part of the adult cardiac anesthesia, echocardiography, regional anesthesia, and acute pain management teams.
Outside the hospital, global medicine is a priority, and Dr. Okonski has travelled extensively on medical mission trips throughout the globe. Finally, he has a special interest in marine mammal medicine, and he works regularly with veterinarians at the Marine Mammal Center in Sausalito providing anesthesia and research support for perioperative care of pinnipeds and cetaceans.
Clinical Associate Professor, Pediatrics - Pulmonary Medicine
BioDr. Okorie is board certified in pediatric pulmonology, sleep medicine and general pediatrics and joined the Division of Pediatric Pulmonary, Asthma and Sleep Medicine in 2018. She obtained her medical degree and Master’s in Public Health at the University of Arizona before going on to a residency and chief residency in pediatrics at Oregon Health & Science University. She completed her fellowship training in both pediatric pulmonary medicine and sleep medicine at Stanford University. She has a passion for medical education and serves as an Associate Program Director for the Pediatric Residency Program at Stanford.
She treats children with a variety of lung diseases, including: asthma, chronic cough, cystic fibrosis, chronic respiratory failure, and chronic lung disease of prematurity. Her additional training in sleep medicine allows her expertise to treat sleep disorders, including: sleep disordered breathing, parasomnias, narcolepsy, restless legs syndrome, and insomnia.
Professor of Radiology (Veterans Affairs), Emeritus
Current Research and Scholarly InterestsBody imaging utilizing CT, ultrasound and MRI. Imaging of appendicitis. Imaging of pancreatic and biliary malignancies. Imaging of trauma. Magnetic resonance angiography.
Richard A. Olshen
Professor of Biomedical Data Science, Emeritus
Current Research and Scholarly InterestsMy research is in statistics and their applications to medicine and biology. Many efforts have concerned tree-structured algorithms for classification, regression, survival analysis, and clustering.
Donald M. Olson
Associate Professor of Neurology at the Stanford University Medical Center, Emeritus
Current Research and Scholarly InterestsEpilepsy in children and adolescents. Particular interest in clinical neurophysiology (EEG and video EEG), differential diagnosis of seizures in children, and selection of patients who will benefit from epilepsy surger.
Clinical Associate Professor, Psychiatry and Behavioral Sciences
BioDr. Nichole Olson is a Clinical Assistant Professor and licensed psychologist in the INSPIRE Clinic and Dialectical Behavior Therapy (DBT) program at Stanford. Dr. Olson completed her masters and doctorate degrees at Northwestern University in Chicago and finished her postdoctoral fellowship at Stanford University. Dr. Olson specializes in evidence-based, recovery-oriented care for individuals with psychosis, providing both individual and group Cognitive Behavioral Therapy for Psychosis (CBTp) to adults within the INSPIRE Clinic. In addition, Dr. Olson leads trainings and ongoing consultation for providers learning to implement CBTp. As a clinician and Assistant Director of Stanford’s DBT program, Dr. Olson also provides individual DBT treatment for those with emotion regulation difficulties.
Visiting Instructor/Lecturer, Cardiothoracic Surgery
BioYoshikazu Ono is a pediatric cardiovascular surgeon who is board certified by The Japanese Board of Cardiovascular Surgery.
He graduated from Nagoya City University in 2015 and began his internship at Nagoya City East Medical Center. He then completed his residency in cardiovascular surgery at the National Cerebral and Cardiovascular Center. He completed a fellowship in pediatric cardiovascular surgery at the same institution after a three-year residency.
His main interests are congenital cardiac defects and mechanical support in children. He is dedicated to improving the safety and durability of surgical treatments and ventricular assist devices for these patients.
Instructor, Medicine - Stanford Prevention Research Center
BioMarily Oppezzo is a behavioral and learning scientist. She completed her doctorate in Educational Psychology at Stanford in 2013. She also is a registered dietitian and has her master's of nutritional science. She completed her dietetic internship at the Palo Alto Veterans Hospital, and currently consults as a sports dietitian for Stanford's Runsafe program. Her research interests leverage her interdisciplinary training, with a focus on how to get people to change to improve their health and well-being. Specifically, these areas include: using social media to motivate physical activity changes in those with or at risk for heart disease; culturally tailoring nutrition and physical activity recommendations and education materials for an Alaskan native population; how walking can be used to improve people's cognitive and creative thinking; and applying learning theories to medical education topics.
Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioSabrina Orique, PhD, RN, AOCNS, is a hematology/oncology clinical nurse specialist at Stanford Health Care. She serves as adjunct faculty for Fresno Pacific University in the MSN FNP program. Her program of research entails patient safety with a focus on delivery of nursing care. Her published work includes missed nursing care, situation awareness, and early recognition of clinical deterioration. She has a Bachelor of Science in Nursing and a Master of Science in Nursing from California State University, Fresno. She earned her PhD in nursing from the University of Missouri, Columbia and is a 2015 Robert Wood Johnson Foundation Future of Nursing Scholar. She is a member of the National Association of Clinical Nurse Specialists, Oncology Nursing Society, and Sigma Theta Tau. She is certified as an oncology nurse and advanced oncology clinical nurse specialist by the Oncology Nursing Certification Cooperation.
Lisa A. Orloff, MD, FACS, FACE
Professor of Otolaryngology - Head & Neck Surgery (OHNS)
BioLisa A. Orloff, MD, FACS, FACE, is Director of the Endocrine Head & Neck Surgery Program and Professor in the Department of Otolaryngology — Head & Neck Surgery, Division of Head & Neck Surgery, at Stanford University School of Medicine. She is Director of the Stanford Thyroid Tumor Program within the Stanford Cancer Center. Her clinical practice focuses on the surgical management of thyroid and parathyroid tumors and disorders.
Dr. Orloff is an internationally recognized leader in the field of endocrine head and neck surgery. She is also an expert in the application of ultrasonography to the diagnosis and management of diseases of the head and neck, with an emphasis on thyroid cancer. Dr. Orloff performs minimally invasive ultrasound-guided procedures such as radiofrequency ablation for the nonsurgical management of appropriate thyroid pathology. Her background in microvascular and laryngeal surgical techniques lends a unique level of refinement to her endocrine surgical practice. A major component of her clinical work is the management of persistent or recurrent thyroid cancer. Dr. Orloff’s multidisciplinary approach to the management of endocrine head and neck disease involves collaboration with her colleagues in other specialties at Stanford and throughout the country. Dr. Orloff also studies the regeneration of tissue that has been lost as a result of cancer therapies.
Dr. Orloff received her bachelor’s degree at Stanford, and her medical degree from the University of California, Los Angeles. She completed her residency in Otolaryngology — Head & Neck Surgery at the University of Washington and a visiting fellowship in Microvascular & Reconstructive Surgery at Mount Sinai Medical Center in New York. Prior to joining the faculty at Stanford, she was the Robert K. Werbe Distinguished Professor in Head & Neck Cancer, and Chief of the Division of Head & Neck Surgery at the University of California, San Francisco (UCSF.)
Dr. Orloff served three consecutive terms as the Chair of the American Academy of Otolaryngology — Head & Neck Surgery (AAO-HNS) Endocrine Surgery committee, and served for many years as a voting member of the FDA’s Panel to evaluate medical devices for Otolaryngology. She holds leadership roles within the American Head and Neck Society, the American Thyroid Association, the American Institute of Ultrasound in Medicine, and the American College of Surgeons. She is co-chair of the ACS Thyroid, Parathyroid, and Neck Ultrasound training program and a member of the ACS National Ultrasound Faculty executive board. She is also a member of such influential teams as the National Cancer Institute (NCI) steering committee on Thyroid Cancer Clinical Trials and the Endocrine Surgery Committee of the American Association of Clinical Endocrinology (AACE). She authored the leading textbook, Head and Neck Ultrasonography (Plural Publishing), as a reference for clinicians; the second edition was published in 2017. Dr. Orloff is a former Fulbright scholar.
Anthony Oro, MD, PhD
Eugene and Gloria Bauer Professor
Current Research and Scholarly InterestsOur lab uses the skin to answer questions about epithelial stem cell biology, differentiation and carcinogenesis using genomics, genetics, and cell biological techniques. We have studied how hedgehog signaling regulates regeneration and skin cancer, and how tumors evolve to develop resistance. We study the mechanisms of early human skin development using human embryonic stem cells. These fundamentals studies provide a greater understanding of epithelial biology and novel disease therapeutics.
Clinical Associate Professor, Anesthesiology, Perioperative and Pain Medicine
Current Research and Scholarly InterestsPoint of Care Ultrasound in Women diagnosed with severe Preeclampsia
Karen Chan Osilla
Associate Professor of Psychiatry and Behavioral Sciences (Public Mental Health and Population Sciences)
Current Research and Scholarly InterestsDr. Osilla conducts health services research with a focus on delivering substance use services to underserved populations using innovative solutions that decrease health access disparities. Dr. Osilla has been conducting addictions research since 2006 and has been involved in clinical trials evaluating cognitive behavioral therapy, collaborative care, and motivational interviewing interventions (web and in-person) among youth, adult, military, family members, and other hard-to-reach populations.