School of Medicine


Showing 61-70 of 94 Results

  • Nawal L. Atwan Johansen, MD

    Nawal L. Atwan Johansen, MD

    Adjunct Clinical Instructor, Educational Programs and Services (EPS)

    BioDr. Nawal L. Atwan Johansen, MD, FACP is a Board Certified Internal Medicine Physician. She practices as a primary care internal medicine physician in Silicon Valley and the Bay Area. She received her BA from Princeton University, MD from Harvard Medical School, and Internal Medicine Residency training at Stanford Hospital and Clinics. She served on the Stanford Medical School faculty as Associate Clinical Professor of Medicine. In recognition of her excellence in patient care, she received the Stanford Health Care Faculty Recognition Award for Patient Centeredness for achieving the 99th percentile of patient satisfaction and likelihood to recommend scores.

    Dr. Johansen was selected by the Stanford Department of Medicine and the Stanford Health Care Administration to be the founding Medical Director of Stanford Health Care’s Clinical Advice Services to build a clinical triage program from the ground up for the entire Stanford Health Care enterprise, serving over 100 specialties, 2000 faculty physicians and over 1 million patients.

    Dr. Johansen is an experienced primary care physician focused on providing personalized, high quality care to her patients. Her expertise is in disease diagnosis and management, prevention of disease, health promotion, and advanced practices to promote long term wellness. Dr. Johansen has a private concierge medicine practice in Palo Alto, California. She is credentialed at Stanford Hospital and is a member of the Adjunct Clinical Teaching Faculty at Stanford Medical School.

  • Sara Johansen, MD

    Sara Johansen, MD

    Clinical Assistant Professor, Psychiatry and Behavioral Sciences

    BioSara Johansen, MD is a Clinical Assistant Professor at Stanford University. Dr. Johansen founded Stanford’s Digital Mental Health Clinic, where she collaborates with platforms like Meru Health and Headspace to provide digital mental health interventions to patients.

    Dr. Johansen works with mental health tech startups as a faculty advisor for Stanford Venture Studios and the Stanford Graduate School of Business. Additionally, she is a faculty affiliate with the Stanford Institute for Human-Centered Artificial Intelligence.

    Dr. Johansen works in industry as a translational expert applying clinical principles to product development. She has particular expertise in the mental health impact of social media and has consulted with social media companies including TikTok and Meta in research and product development of safety features. She was an invited contributor to the Aspen Institute series on wellbeing, technology, and ethics, and the Stanford HAI seminar series for her work on the mental health impact of social media recommender systems.

  • Esther M. John

    Esther M. John

    Professor (Research) of Epidemiology and Population Health and of Medicine (Oncology)

    Current Research and Scholarly InterestsDr. John has extensive expertise in conducting population-based epidemiologic studies and has led as Principal Investigator multiple large-scale studies, including multi-center studies with a study site in the San Francisco Bay Area with its diverse population. Many of her studies and collaborations investigated cancer health disparities. Her research has focused on the role of modifiable lifestyle factors (e.g., body size, physical activity, diet), hormonal factors, early-life exposures, genetic variants, and gene-environment interactions; differences in risk factors by race/ethnicity, breast cancer subtypes, and prostate cancer subtypes; risk factors for familial breast cancer and second primary breast cancer, as well as prognostic factors related to survival disparities.

    As Principal Investigator, Dr. John has led a number of studies conducted in the San Francisco Bay Area, including:

    - the Northern California site of the Breast Cancer Family Registry, an on-going prospective multi-generational cohort of over 13,000 families established in 1995 at six international sites;
    - the Northern California site of the WECARE Study that investigates risk factors for second primary breast cancer;
    - the California site of the Breast Cancer Health Disparities Study that investigated genetic variability and breast cancer risk and survival in Hispanic and non-Hispanic white populations in the context of genetic admixture;
    - the Breast Cancer Etiology in Minorities (BEM) Study, a pooled analysis of risk factors for breast cancer subtypes in racial/ethnic minorities;
    - the San Francisco Bay Area Breast Cancer Study, a population-based case-control study in nearly 5,000 Hispanic, African American and non-Hispanic white women that investigated the role of modifiable lifestyle factors and other risk factors;
    - the San Francisco Bay Area Prostate Cancer Study, a population-based case-control study of lifestyle and genetic risk factors for advanced and localized disease.

    These studies collected and pooled extensive data and biospecimens and continue to support numerous ancillary studies, collaborations and international consortia and have contributed to a better understanding of cancer risk and survival in racial/ethnic minority populations.

    Dr. John is also a founding PI of the LEGACY Girls Study, an on-going prospective cohort established in 2011 that investigates early life exposures in relation to pubertal development outcomes, breast tissue characteristics, and behavioral and psychosocial outcomes in the context of having a family history or breast cancer.

  • Roy Mattathu John, MD, PhD, FRCP

    Roy Mattathu John, MD, PhD, FRCP

    Clinical Professor, Medicine - Cardiovascular Medicine

    BioDr. John is a fellowship-trained cardiologist with more than 25 years of experience. He is a clinical professor in the Department of Medicine at Stanford University School of Medicine.

    He originally earned board certification in clinical cardiac electrophysiology in 1996 and has continued to recertify. He also has earned board certification in cardiovascular disease and internal medicine.

    Dr. John diagnoses and manages all forms of cardiac arrhythmias including atrial fibrillation and ventricular arrhythmias. His special interests include catheter ablation for SVT, atrial arrhythmias, pacemaker and defibrillator implants, and lead extraction.

    He has conducted extensive research. He has participated in large multi-center clinical trials, including over 30 studies as a primary investigator of drugs, devices, and ablation techniques. He helped pioneer a new way to manage scar-related ventricular tachycardia. He also helped develop innovations in cardiac pacemaker technology.

    Dr. John has authored over 200 publications that include 126 original research papers. They have appeared in reputed journals such as the New England Journal of Medicine, Circulation, Lancet, Journal of the American College of Cardiology, European Heart Journal, Heart Rhythm, Journal of Cardiovascular Electrophysiology, and many more. Topics have included innovative, new techniques and technologies for the treatment of supraventricular arrhythmias, atrial fibrillation, ventricular tachycardia, catheter ablation, lead extraction, cardiac pacing, and defibrillation.

    He was a member of the editorial board for Circulation and is currently on the editorial board of the publications Heart Rhythm Journal, Arrhythmia and Electrophysiology, Journal of Cardiac Electrophysiology, and Journal of Innovations in Cardiac Rhythm Management.

    Dr. John also has written several chapters for medical textbooks such as Harrison’s Principles of Internal Medicine, Zipes Textbook on Cardiac Electrophysiology - Cell to Bedside, Conn’s Current Therapy, Electrical Disorders of the Heart, Cardiac Mapping, and many more.

    He has made invited presentations to his peers at scientific sessions of the Heart Rhythm Society, American Heart Association, American College of Cardiology, and Heart Failure Society. He has delivered more than 60 national and international lectures. Subjects include cardiac pacing, defibrillation, heart failure, and arrhythmia management including catheter ablation for arrhythmias.

    Dr. John is a fellow of the American College of Cardiology, Heart Rhythm Society, and Royal College of Physicians of London.

    He has volunteered his time and expertise to provide free cardiac care to underserved patients in Bolivia, India, and Kenya.

  • Tyler Johnson

    Tyler Johnson

    Clinical Associate Professor, Medicine - Oncology

    BioDr. Tyler Johnson is a physician, author, educator, and humanitarian. At the Stanford University School of Medicine, he has held an appointment as a clinical assistant professor for six years. A medical oncologist, Dr. Johnson sees patients with all types of gastrointestinal malignancies and particularly focuses on patients with neuroendocrine tumors, colon cancer, and pancreas cancer.

    Dr. Johnson also serves as a leader of the Stanford inpatient oncology services, including supervising the oncology housestaff service. He is responsible, in conjunction with other leaders, for multiple major improvements in the functioning of Stanford hospital.

    Dr. Johnson views the practice of medicine largely as an educational endeavor. To that end, for many years he has taught medical students, residents, and fellows—including hosting them as temporary and longer-term apprentices in his oncology clinic and working with them on the inpatient housestaff oncology service. He emphasizes diversity and inclusion in his mentoring efforts and has worked tirelessly to promote the professional development of medical trainees across the training spectrum--from undergraduates to oncology fellows.

    The winner of multiple Stanford Medicine teaching awards, Dr. Johnson has established himself as a regional and increasingly as a national leader and innovator in the education of oncology fellows, including by developing novel teaching methods that have been presented across the country, including at national meetings. He also heads the Stanford oncology department’s curricular development and as part of that had developed a novel curricular approach that centers the needs and teaching abilities of oncology fellows. He also works as one of the principal faculty members of the Stanford Educators-4-CARE program.

    Dr. Johnson and his co-host, Henry Bair, became concerned about the loss of a shared sense of meaning in the medical profession and, together, have taught multiple classes in the Medical School and, in the spring of 2022, founded The Doctor's Art podcast. Over the remainder of 2022, this podcast became one of the five most listened-to medical podcasts in the nation, with a growing national and international listenership.

    Finally, Dr. Johnson is an author with a growing reputation for insightful analysis of the intersection of medicine, ethics, and spirituality. His writings has been featured by Religion News Service, the Salt Lake Tribune, BYU Studies, Dialogue, and The San Jose Mercury News, where he is a regular contributor.