Primary Care and Population Health
Showing 401-455 of 455 Results
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Crystal Unzueta, MD
Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioDr. Unzueta is a board-certified family medicine physician. She specializes in providing primary care services to people of all ages. Her services include annual check-ups, monitoring chronic conditions, and performing minor in-office procedures.
She is also a clinical assistant professor in the Stanford School of Medicine Department of Family Medicine.
Dr. Unzueta’s practice focuses on providing compassionate and comprehensive care. She specializes in providing bilingual and bicultural care for patients in underserved populations. She has traveled to Belize on a medical mission to provide free, basic primary care to vulnerable communities. Her mentoring work includes building a network of Latino medical students to help support each other throughout medical school. She has also worked on numerous volunteer projects, such as researching the benefits of a community yoga program for minorities in underserved areas. -
Sharif Vakili, MD, MBA, MS
Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioSharif Vakili, MD, MBA, MS, (pronouns: he/him), is an internal medicine physician, clinician executive and educator. He practices at Stanford Los Altos Primary Care.
Dr. Vakili has a background in chronic disease management and health systems delivery, believing strongly in a teamwork approach to patient care that empowers patients to navigate the health system as part of their clinical care.
He is active in the research and business communities. His research has been in peer-reviewed journals including NEJM Catalyst, JAMA Network Open and the Annals of Emergency Medicine. He also teaches annually at the Stanford Graduate School of Business.
Dr. Vakili is credited with establishing and coining Remote Patient Intervention (RPI), a model of clinician-supervised AI care delivery first performed at Stanford during a clinical study published in JAMA Network Open. His work has defined the emerging field of Clinical AI, in which artificial intelligence delivers care that would otherwise be performed by a licensed practitioner. -
Mark Van Orden
Postdoctoral Scholar, General Internal Medicine
BioMark Van Orden is a postdoctoral scholar at the Stanford School of Medicine. His research applies causal inference and natural experiments to questions at the intersection of economics and health. His current work examines how shingles vaccination affects brain structure using MRI data from the UK Biobank, providing the first causal neuroimaging evidence of how vaccination protects against dementia. He received his PhD in Economics from the University of California, Irvine.
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Maria Norma Villalon Landeros
Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioDr. Norma Villalon's path to medicine reflects a journey of perseverance and community service. Born and raised in rural Guanajuato, Mexico, her early years were shaped by strong family bonds and a deep appreciation for community care, despite financial challenges. Before immigrating to the United States at 18, she dedicated herself to adult education through INEA, teaching literacy and basic education to members of her community. This early experience fostered her commitment to serving diverse populations and understanding their unique needs. As a first-generation professional from an immigrant background, Dr. Villalon brings a unique perspective to medicine, informed by her profound understanding of underserved communities. Her journey from a small Mexican village to becoming a physician exemplifies the power of determination and the importance of accessible healthcare. Through her work, she continues to advocate for equitable medical care while actively mentoring and supporting the next generation of physicians from underrepresented backgrounds.
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Kathan Vollrath, MD, MPH
Clinical Associate Professor, Medicine - Primary Care and Population Health
BioDr Vollrath is an internal medicine primary care physician at Stanford Internal Medicine Clinic. She provides asynchronous message-based care via myHealth, including inbox coverage for faculty on vacation. She is a QuEST scholar, studying the implementation of this new service.
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Katherine T. Ward, MD
Clinical Professor, Medicine - Primary Care and Population Health
BioDr. Ward is the Chief of the Geriatrics Section in the Department of Medicine, Division of Primary Care and Population Health at Stanford University School of Medicine, and a Clinical Professor of Medicine. In this leadership role, she supervises program leaders across outpatient, inpatient, and skilled nursing facility settings, bringing them together to provide longitudinal, coordinated care to older adults across the healthcare continuum.
Dr. Ward is a fellowship-trained geriatrician with Stanford in Palo Alto, California, and is board certified in geriatric medicine, hospice and palliative medicine, and internal medicine. Her clinical practice spans all care settings—outpatient clinics, hospitals, and skilled nursing facilities—with a focus on managing the critical transitions between them. She specializes in comprehensive care for older adults, including dementia care, palliative care, geriatric assessment, and best practices in nursing home care. Dr. Ward draws on her extensive experience to teach and implement evidence based models that support care for older adults. Dr. Ward's research interests include early detection of dementia in vulnerable populations, dementia care support programs, and geriatric assessment in diverse populations.
She has published her research in peer-reviewed journals including the Journal of the American Geriatrics Society; The American Journal of Geriatric Pharmacotherapy; The Journal of Nutrition, Health & Aging; and the Journal of Palliative Medicine. She has served as an ad hoc reviewer for several journals, including Geriatrics, and has presented posters at annual meetings of the American Geriatrics Society and the Society of General Internal Medicine.
Dr. Ward is a member of the American College of Physicians and the American Geriatrics Society. -
Eva Weinlander
Clinical Professor, Medicine - Primary Care and Population Health
Current Research and Scholarly InterestsWomen's Health
Mind Body Medicine
Chronic Disease Management -
Kirsti Weng Elder MD/MPH
Clinical Associate Professor, Medicine - Primary Care and Population Health
BioDr. Weng is the Section Chief of General Primary Care. She has over 25 years of experience caring for patients in primary care, urgent care and in the hospital. She is also a teacher of students and residents. As a leader in primary care re-design, she is passionate about practicing patient-centered medicine. She is a an advocate of Mindfulness Self-compassion to develop equanimity. She practices with an emphasis on musculoskeletal care as she feels fitness is the foundation of wellness. She is a leader in organizational change and physician management. She supports community health and care for the underserved. Outside of work she enjoys biking, reading and spending time with her 8 children.
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Frederik Wild
Postdoctoral Fellow, Medicine - Primary Care and Population Health
BioI am a postdoctoral researcher at Stanford University (Geldsetzer Lab) and the Heidelberg Institute of Global Health (Germany).
In my research, I apply micro-econometric methods, specifically quasi-experimental designs, to study how policy interventions and external shocks shape health, human capital, and socioeconomic outcomes. I particularly enjoy investigating large-scale datasets as well as geospatial data.
Further information on my work is available on my personal webpage at: www.frederikwild.com -
Temesgen 'Tem' Woldeyesus
Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioDr. Tem (Temesgen) is a Clinical Assistant Professor in the Department of Medicine, Division of Primary Care and Population Health. He obtained his medical degree at UCSF and continued his residency training at UCSF in Family and Community Medicine. He was selected as Chief Resident, where he further developed as a clinical educator and administrator, prior to joining the faculty group at Stanford. His academic interests include alternative models of care, clinical informatics, and digital health equity.
Dr. Tem Woldeyesus practices full-spectrum family medicine, which includes care for the entire age spectrum. He is driven to provide evidence-based, high quality, culturally competent care.
He is a native of the Bay Area. Outside of work, he enjoys spending time with his fiancée, playing (and watching) basketball, and exploring national parks. -
Hannah Wright
Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioHannah Wright, MMS, PA-C has been a practicing physician assistant since 2010. She received her PA education at Stanford and earned a Master of Medical Science degree from Saint Francis University. She has worked in Family Practice, Internal Medicine, Gynecology. Since 2013 she has worked in the Stanford Express Care Clinic. She is also a Clinical Assistant Professor of Medicine and Director of Clerkship Education in the Stanford Masters of Science in PA Studies Program.
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Min Xie
Postdoctoral Fellow, Medicine - Primary Care and Population Health
BioCausal inference using natural experiments with focuses on public health policy and medical intervention.
Also work on development economics topics of financial and education intervention.
PhD in economics, Heidelberg University
personal webpage: https://minxie.org -
Seema Yasmin
Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioSeema Yasmin is an Emmy Award-winning journalist, poet, medical doctor and author. Yasmin served as an officer in the Epidemic Intelligence Service at the U.S. Centers for Disease Control and Prevention where she investigated disease outbreaks and was principal investigator on a number of CDC studies. Yasmin trained in journalism at the University of Toronto and in medicine at the University of Cambridge.
Yasmin was a finalist for the Pulitzer Prize in breaking news in 2017 with a team from The Dallas Morning News for coverage of a mass shooting, and recipient of an Emmy award for her reporting on neglected tropical diseases and their impact on resource poor communities in the U.S. She received multiple grants from the Pulitzer Center on Crisis Reporting for coverage of gender based violence in India and the aftermath of the Ebola epidemic in West Africa. In 2017, Yasmin was a John S. Knight Fellow in Journalism at Stanford University investigating the spread of health misinformation and disinformation during public health crises. Previously she was a science correspondent at The Dallas Morning News, medical analyst for CNN, and professor of public health at the University of Texas at Dallas. She teaches crisis management and crisis communication at the UCLA Anderson School of Management as a Visiting Assistant Professor.
She is the author of 12 non-fiction, fiction, poetry and childrens books, including: Can Scientists Succeed Where Politicians Fail? (Johns Hopkins University Press, 2025) which was co-authored with Nobel laureate Dr. Peter Agre; What the Fact?! Finding the Truth in All the Noise (Simon and Schuster, 2022); Viral BS: Medical Myths and Why We Fall For Them (Johns Hopkins University Press, 2021); Muslim Women Are Everything: Stereotype-Shattering Stories of Courage, Inspiration and Adventure (HarperCollins, 2020); If God Is A Virus: Poems (Haymarket, 2021); Unbecoming: A Novel (Simon and Schuster, 2024); Djinnology: An Illuminated Compendium of Spirits and Stories from the Muslim World (Chronicle, 2024); and The ABCs of Queer History (Workman Books, 2024). Her writing appears in The New York Times, Rolling Stone, WIRED, Scientific American and other outlets.
Yasmin’s unique expertise in epidemics and communications has been called upon by the Vatican, the Presidential Commission for the Study of Bioethical Issues, the Aspen Institute, the Skoll Foundation, the Biden White House, and others. She teaches a new paradigm for trust-building and evidence-based communication to leadership at the World Health Organization and CDC. In 2019, she was the inaugural director of the Stanford Health Communication Initiative.
Her scholarly work focuses on the spread of scientific misinformation and disinformation, information equity, and the varied susceptibilities of different populations to false information about health and science. In 2020, she received a fellowship from the Emerson Collective for her work on inequitable access to health information. She teaches multimedia storytelling to medical students in the REACH program. -
Emmanuelle Yecies, MD
Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioDr. Emmanuelle Yecies is a board-certified internal medicine doctor at Stanford Health Care, with fellowship training in women’s health and medical education. She is also a clinical assistant professor in the Department of Medicine, Division of Primary Care and Population Health at Stanford University School of Medicine.
Dr. Yecies practices comprehensive primary care and preventive care. Her additional training in women’s health equips her with the skills to manage complex, gender-specific health needs throughout the lifespan, including hormone management, reproductive health care, and chronic disease management. She provides comprehensive, trauma-informed care that’s personalized to each of her patients.
Dr. Yecies’ research interests include preventive care and comprehensive chronic disease management for women in different reproductive stages of life, from menstruation through menopause. As a clinician educator, she has developed numerous educational materials for trainees and faculty. She is a frequent lecturer on issues affecting women’s health, both locally and nationally.
Dr. Yecies has published her work in peer-reviewed journals, such as Journal of General Internal Medicine, Seminars in Reproductive Medicine, Southern Medical Journal, and BMJ Open. She has authored chapters in medical textbooks and has also presented at national and regional meetings, including annual meetings of the Society of General Internal Medicine (SGIM) and the Alliance for Academic Internal Medicine (AAIM).
Dr. Yecies is a member of SGIM. -
Grace Chen Yu
Clinical Associate Professor, Medicine - Primary Care and Population Health
BioDr. Yu is a modern-day version of the “old-fashioned family doc” who delights in caring for patients from “cradle to grave,” while also promoting the health of her community and developing the future leaders of family medicine. On any particular day, one might find her counseling a long-time smoker on quitting, draining an abscess in clinic, delivering a baby, doing a phone (or sometimes home) visit with one of her elderly patients, lecturing about High-Value Health Care, facilitating a diabetes group visit, singing the praises of coordinated primary care to politicians, discussing end-of-life options with a hospitalized patient, or sharing some of her stories as mother-doctor-teacher with one of her advisees. In 2016, adding one more hat to the mix, Dr. Yu became Program Director of the 24-resident Stanford Health Care - O’Connor Hospital Family Medicine Residency Program. Whereas the old-fashioned family doc was a master at caring for patients at different ages and stages of life, as a modern-day family physician, Dr. Yu is committed to researching ways to do so more effectively and efficiently. She considers it a privilege to be a part of her patients' lives and hopes to help both her patients and her trainees find a path to better health and happiness. To keep herself in great health, Dr. Yu enjoys playing the piano, photography, scuba diving, adventure travel (all the more adventurous with her three children in tow!), and spending time with her family and friends.
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Ilana Rachel Yurkiewicz
Clinical Associate Professor, Medicine - Primary Care and Population Health
BioDr. Ilana Yurkiewicz is a Clinical Associate Professor of Medicine at Stanford University School of Medicine in the Division of Primary Care and Population Health and Division of Oncology (by courtesy). Board certified in internal medicine, hematology, and oncology, she co-directs Stanford’s Primary Care for Cancer Survivorship Program, an innovative clinic that cares for cancer survivors and patients at elevated risk. She is also an award-winning medical journalist and Stanford’s inaugural Physician-Journalist in Residence.
Her academic and clinical work centers on developing new models of care that bridge oncology and primary care. She has built programs to provide coordinated, longitudinal care for patients during and after cancer treatment and those with inherited cancer predispositions.
As a physician-journalist, she is the author of the nationally acclaimed book Fragmented: A Doctor’s Quest to Piece Together American Health Care (W.W. Norton, 2023). Her writing has also appeared in The Best American Science and Nature Writing, The Atlantic, Scientific American, TIME, STAT, Undark, and other outlets. She received a Folio Award for best healthcare column and was shortlisted for the Cancer Journalism Award.
She is Faculty Director of the annual Big Ideas in Medicine conference, which convenes leaders across fields to examine pressing challenges in health and society. She advises startups focused on cancer survivorship and prevention. As Associate Medical Director of Stanford’s Internal Medicine Clinic, she oversees the largest primary care clinic for Stanford residents. She teaches core concepts of cancer survivorship and primary care to residents, medical students, fellows, and faculty.
Her research focuses on designing new approaches to cancer survivorship delivery, and she leads a research team evaluating their implementation in practice. Her work has been published in the New England Journal of Medicine, Journal of Clinical Oncology, Genetics in Medicine, and other peer-reviewed journals. She has presented nationally at meetings including the Society of General Internal Medicine, American Society of Hematology, and National Society of Genetic Counselors. She has also served on the editorial board of Hematology News.
Earlier in her career, Dr. Yurkiewicz interned with the Presidential Commission for the Study of Bioethical Issues and contributed to white papers on ethical challenges in medicine. She is a member of the American College of Physicians and an associate member of the American Society of Clinical Oncology and American Society of Hematology. -
Mira Zein
Clinical Associate Professor, Psychiatry and Behavioral Sciences - Medical Psychiatry
Clinical Associate Professor (By courtesy), Medicine - Primary Care and Population HealthBioDr. Zein received her dual bachelor’s degrees in Anthropology and Physiological Science at UCLA and worked initially as a healthcare consultant, developing programs that improve healthcare access for vulnerable populations. She returned to school to pursue a Masters in Public Health at Johns Hopkins University; her research foci were disaster response interventions for physical and mental health and the impact of the built environment on public health. During her masters, she worked with the International Rescue Committee in Baltimore to help address the acculturation and psychological stress the Baltimore refugee population faced in resettlement.
Dr. Zein completed her medical training at McGill University. During medical school she continue to pursue interests in global and cultural health, focusing on national and local clinical projects to support refugee and asylum seeker access to medical and mental health treatment as part of CFMS. She was awarded the Mona Bronfman Sheckman Prize in Psychiatry for her work. During her psychiatry residency training at New York University (NYU), Dr. Zein continued pursuing her interest in global mental health, working as a group leader for refugees/asylum seekers in the Bellevue Survivors of Torture program, and the Association for Culture and Psychiatry.
She also became interested in models of Integrated Behavioral Health (IBH) to provide better access to mental health services within primary care and other settings. She founded the Integrated Behavioral Health resident working group and designed a two-year resident training program in the Collaborative Care Model, and developed a Collaborative Care model in one of NYU Langone-Brooklyn's FQHC sites. She completed residency as a chief resident and won awards for Excellence in Resident Teaching as well as for humanism and clinical excellence in the Comprehensive Psychiatric Emergency Program
Dr. Zein completed her Consult Liaison Fellowship at Stanford and has remained as clinical faculty. She previously currently served as an attending psychiatrist on the General, Intensive Care, and ED-Psychiatry Consult service. She currently works as the Psychiatric Director for Integrated Behavioral Health. She initially the model for the Stanford Primary Care Clinic serving Cisco employees and their families. She is currently working on expanding Integrated Behavioral health to other Stanford Primary Care Clinics, and has worked with Stanford's Digital Health Team to start and expand psychiatry e-consults for primary care. She also works as the Behavioral Health Director for Cisco, applying principles of organizational psychiatry and public health to assess company behavioral health strategy and provide support for Cisco employees and their families. Additionally, Dr Zein is part of the Stanford Mental Health lab where she supervises and completes evaluations for refugee and asylum seekers, and teaches Neuroscience and Psychopharmacology for the Psychiatry Residents -
Donna Zulman
Professor of Medicine (Primary Care and Population Health)
Current Research and Scholarly Interests- Health care delivery models for patients with complex medical, social and behavioral needs.
- Interventions that address social determinants of health
- Effective communication and relationship-building in the clinical context
- Patient-facing technology (e.g., video-based care, eHealth technology) to facilitate access to health care
