Browse School of Medicine | Stanford Profiles

Alliah Robelle Castro Barsalou

Research Administrator, Medicine - Med/Oncology

Greg Barsh

Professor of Genetics and of Pediatrics, Emeritus

Current Research and Scholarly InterestsGenetics of color variation

Contact Info

Web page:

http://1x.com/member/gbarsh

Richard Barth

Professor of Radiology (Pediatric Radiology) and, by courtesy, of Obstetrics and Gynecology (Maternal Fetal Medicine)

On Partial Leave from 2026-10-05 To 2026-11-30

Current Research and Scholarly InterestsMagnetic Resonance Imaging and Sonographic diagnosis of fetal anomalies.
Focus interest in the diagnosis and conservative (non-surgical and minimal radiation) management of congenital broncho pulmonary malformations.
Imaging of appendicitis in children.
Sonography of the pediatric testis.

Esther Bartl

Postdoctoral Fellow, Medicine - Primary Care and Population Health
Visiting Postdoctoral Scholar, Medicine - Primary Care and Population Health

BioI am a Postdoctoral Researcher in the lab of Pascal Geldsetzer affiliated with the Stanford University School of Medicine and the Heidelberg Institute of Global Health. My research examines questions at the intersection of health policy, epidemiology, and applied econometrics, with a focus on causal inference in large-scale health datasets.

Roxanne Bartolome

Clinical Trials Reg Spclst 1, Peds/Stem Cell Clinical Trials

Krysta Suzanne Barton

Senior Research Scholar, School of Medicine - Biomedical Ethics

Shawn Barton, MD, PhD

Clinical Assistant Professor, Adult Neurology

BioDr. Shawn Barton is a board-certified, fellowship-trained neurologist with the Stanford Health Care Movement Disorders Center. He specializes in movement disorders, such as Parkinson’s disease, essential tremor, and dystonia. With a deep understanding of neuroscience, he expertly diagnoses and treats many neurodegenerative and genetic conditions. He provides compassionate care focused on relieving symptoms and improving everyday life.

During his doctoral studies, Dr. Barton investigated drug delivery and the development of novel biomarkers in Alzheimer’s disease using preclinical mouse models. As a physician-scientist, his research interests include identifying biomarkers for Parkinson's disease and other neurodegenerative diseases. He also focuses on developing clinical trials to advance potential disease-modifying therapies.

Dr. Barton has published his findings in several peer-reviewed journals, including Science, Journal of Alzheimer’s Disease, and Journal of Biomolecular NMR. He also has presented at national conferences, including annual meetings of the American Academy of Neurology and the Society of General Internal Medicine. He has shared his research on a range of topics, including identifying methods of increasing blood-brain barrier penetrance for therapeutic delivery and using inhaled fluorescent markers to detect amyloid-beta plaques (a protein known to build up in the brain with Alzheimer’s disease) in the retina.

Dr. Barton is a member of the American Academy of Neurology, American Neurological Association, and International Parkinson and Movement Disorder Society.

Jalal Kenji Baruni

Clinical Assistant Professor, Anesthesiology, Perioperative and Pain Medicine

Umang Barvalia

Clinical Associate Professor (Affiliated), Medicine - Med/Pulmonary, Allergy & Critical Care Medicine

BioUmang Barvalia earned his M.B,B.S degree from Medical College, Baroda in Vadodara, India. He completed his internal medicine residency at Marshfield Clinic- St. Joseph’s Hospital, Marshfield, WI where he also served as a chief resident. He was a chief fellow during his Pulmonary and Critical Care Medicine fellowship at University of Wisconsin, Madison, WI. He is currently working as a Board Certified Internal Medicine, Pulmonary and Critical Care Medicine Physician at the Santa Clara Valley Medical Center (SCVMC), San Jose. – a county hospital that serves as a teaching site for Stanford residents and fellows. He holds an appointment of Clinical Associate Professor (affiliated) at Stanford University School of Medicine due to his involvement in training of pulmonary and critical medicine fellows.

His professional interests include point-of-care ultrasound (POCUS) and medical education. He is certified in Critical Care Echocardiography by the National Board of Echocardiography (NBE) and teaches residents and fellows POCUS in the ICU and on the pulmonary consult service.

As a lung specialist, he cares for patients with chronic lung conditions like asthma, pulmonary hypertension, COPD, Interstitial lung disease, diseases involving the pleura and lung cancer. He also established the Endobronchial Ultrasound Program at SCMVC that helps in the diagnosis and care of lung cancer patients.

As a full time faculty in the intensive care unit, he treats patients with a variety of conditions including sepsis, liver failure, respiratory failure, post cardiac arrest and stroke. Along with his peers, he introduced prone position ventilation at SCVMC that helps in management of patients with ARDS.

Fiona Barwick, PhD, DBSM

Clinical Associate Professor, Psychiatry and Behavioral Sciences - Sleep Medicine

Current Research and Scholarly InterestsResearch interests focus on expanding sleep education, improving sleep health, optimizing treatment for circadian rhythm disorders, and adapting treatment for insomnia in populations where developmental, medical, psychiatric and cultural factors intersect.

Current research projects include developing and piloting integrated protocols for treating sleep problems that co-occur with medical conditions such as chronic pain or POTS. Ongoing collaborations include delivery of a CBTI protocol in Mandarin via telehealth to patients at Chongqing Traditional Chinese Medicine Hospital in China. Past projects include investigation of the link between RLS and the gut microbiome and a survey of student sleep health.