School of Medicine


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  • Alison Marsden

    Alison Marsden

    Douglass M. and Nola Leishman Professor of Cardiovascular Diseases, Professor of Pediatrics (Cardiology) and of Bioengineering and, by courtesy, of Mechanical Engineering

    Current Research and Scholarly InterestsThe Cardiovascular Biomechanics Computation Lab at Stanford develops novel computational methods for the study of cardiovascular disease progression, surgical methods, and medical devices. We have a particular interest in pediatric cardiology, and use virtual surgery to design novel surgical concepts for children born with heart defects.

  • Andrew Philip Martella

    Andrew Philip Martella

    Clinical Associate Professor, Radiation Oncology - Radiation Therapy

    BioDr. Martella is a fellowship-trained radiation oncologist and a clinical assistant professor of radiation oncology at Stanford University School of Medicine.

    His clinical interests include gynecologic, breast, thoracic, gastrointestinal, genitourinary, and central nervous system cancers. His experience encompasses the full range of radiotherapy techniques, including intensity modulated radiation therapy (IMRT), volumetric modulated arc therapy (VMAT), stereotactic body radiotherapy (SBRT), CyberKnife radiosurgery, eye plaque brachytherapy, and prostate and gynecologic high dose rate (HDR) brachytherapy.

    Dr. Martella is dedicated to improving the quality of care and the patient experience. He deeply values a close relationship with his patients and their loved ones. He feels that each patient experiences healthcare in a unique and individual way. By recognizing and responding to those individual needs Dr. Martella provides a truly patient-centered experience. He has helped conduct research into noninvasive deep brain stimulation and chromosomal topography,and published on the topic of treating rectal cancer without radiation. He also was the primary contributing author of chapters in the book First Aid for the United States Medical Licensing Examination.

    Dr. Martella has delivered presentations at the Annual Meeting of the American Society for Therapeutic Radiology and Oncology. Topics include chemotherapy and radiotherapy in endometrial cancer.

    Among the honors for scholarship that Dr. Martella has received, he graduated first in his class at Duke University School of Medicine. He was also elected during medical school into Alpha Omega Alpha Honor Medical Society.

    Dr. Martella’s community service has included a position on the board of directors of Camp Good Days and Special Times, a nonprofit organization that provides services for children who have cancer, have a parent or sibling with cancer, or have lost a parent or sibling to the disease. He has served on several leadership roles and has a deep dedication to furthering diversity and inclusion throughout the healthcare system.

  • Lynne Martin, MD

    Lynne Martin, MD

    Clinical Assistant Professor, Radiology

    BioDr. Martin is an interventional radiologist with Stanford Health Care Interventional Radiology. She is also a clinical instructor in the Department of Radiology, Division of Nuclear Medicine and Molecular Imaging at Stanford University School of Medicine.

    Dr. Martin specializes in interventional oncology (minimally invasive cancer treatments). She diagnoses and treats venous (vein) disease, including venous occlusion (when a vein becomes narrowed or blocked by nearby structures), deep vein thrombosis (DVT), and vascular malformations (abnormal development of blood vessels). She also focuses on the management of cirrhosis (severe scarring of the liver) and portal hypertension (elevated pressure in a large abdominal vein). Additionally, she treats women’s health issues, such as fallopian tube blockages, chronic pelvic pain, pelvic venous disease, and uterine fibroids. She is a specialist provider for patients with HHT and pulmonary AVMs as well as patients with vascular malformations (arterial, venous, venolymphatic).

    Her research interests include treatments for portal vein thrombosis (clotting), liver cancer, and health care disparities. She has also studied intra-arterial corticosteroid treatment for inflammatory bowel disease. In addition, she has explored the use of bronchial artery embolization (blocking a blood vessel) for the treatment of hemoptysis (coughing up blood) in people with cystic fibrosis.

    Dr. Martin twice received the Society of Interventional Oncology (SIO) Scholarship Award. She won first place in SIO’s Artificial Intelligence Hackathon. She has also twice received the Etta Kalin Moskowitz Fund Research Award.

    Dr. Martin has published in peer-reviewed journals, including the Journal of Clinical Medicine, Neuropeptides, and Journal of Vascular and Interventional Radiology. She has delivered presentations at a number of professional society meetings, including the SIO, the Society of Interventional Radiology (SIR), and the Radiological Society of North America (RSNA).

    Dr. Martin is a member of several professional groups, including SIO, SIR, and RSNA. She also serves on committees such as SIO’s Education Committee and Stanford’s Performance Improvement Committee.

  • Ashley Martinez, MD, MAS

    Ashley Martinez, MD, MAS

    Clinical Assistant Professor, Medicine - Nephrology

    BioDr. Ashley Martinez is a board-certified, fellowship-trained nephrologist with the Kidney and Pancreas Transplant Program at Stanford Health Care. She is also a clinical assistant professor in the Department of Medicine, Division of Nephrology at Stanford University School of Medicine.

    Dr. Martinez specializes in caring for kidney transplant recipients. She has expertise in pre-transplant evaluation and readiness, immunosuppression, kidney allograft survival, and the prevention and treatment of post-transplant complications. She prioritizes clear, personalized communication at every point to improve care.

    Dr. Martinez earned her medical degree from Harvard Medical School and completed her residency in internal medicine at Massachusetts General Hospital. She completed clinical and research fellowships in nephrology at the University of California, San Francisco (UCSF), where she also earned a master’s degree in clinical research. She completed her transplant nephrology fellowship at Stanford University School of Medicine.

    Dr. Martinez’s research interests focus on addressing the needs of patients impacted by language barriers. Her work has emphasized the need to improve provider-patient communication, patient education, and evaluation tools for patients with limited English proficiency. She aims to increase awareness of communication gaps and increase patient-centered communication throughout the course of kidney care.

    Dr. Martinez has published her findings in peer-reviewed journals including JAMA Network Open and Kidney360. She has also presented at the National Kidney Foundation Spring Clinical Meetings.

    Dr. Martinez is a member of the American Society of Nephrology, the American Society of Transplantation, and the National Kidney Foundation.

  • Nicole Martinez-Martin

    Nicole Martinez-Martin

    Assistant Professor (Research) of Pediatrics (Biomedical Ethics) and, by courtesy, of Psychiatry and Behavioral Sciences (Child and Adolescent Psychiatry and Child Development)

    Current Research and Scholarly InterestsNIH/National Institute of Mental Health
    K01 MH118375-01A1
    “Ethical, Legal and Social Implications in the Use of Digital Technology for Mental Health Applications”

    Greenwall Foundation Making a Difference in Bioethics Grant
    “Ethical, Legal and Social Implications of Digital Phenotyping”

  • Nicole M. Martinez

    Nicole M. Martinez

    Assistant Professor of Chemical and Systems Biology and of Developmental Biology

    Current Research and Scholarly InterestsThe Martinez lab studies RNA regulatory mechanisms that control gene expression. We focus on mRNA processing, RNA modifications and their roles in development and disease.

  • Olivia Martinez

    Olivia Martinez

    Johnson and Johnson Professor of Surgery

    Current Research and Scholarly InterestsHost-Pathogen interactions; EBV B cell lymphomas; pathways of immune evasion in the growth and survival of EBV B cell lymphomas; mechanisms of graft rejection and tolerance induction; stem cell and solid organ transplantation.

  • Pedro Martins Gomes de Oliveira, MD

    Pedro Martins Gomes de Oliveira, MD

    Clinical Assistant Professor, Otolaryngology (Head and Neck Surgery)

    BioDr. Gomes de Oliveira is an oral maxillofacial surgeon, head and neck surgeon, and sleep specialist with the Stanford Health Care Sleep Surgery Program. He is also a clinical assistant professor in the Department of Otolaryngology – Head and Neck Surgery, Division of Sleep Surgery at Stanford University School of Medicine.

    Dr. Gomes de Oliveira specializes in orthognathic (jaw) and sleep surgery. He treats simple to complex cases of obstructive sleep apnea, creating personalized, effective care plans for each of his patients.

    Dr. Gomes de Oliveira studies new treatments and best practices in jaw, sleep, and facial surgeries. He has analyzed psychiatric and cardiovascular outcomes in sleep surgery patients and researched sports-related facial fractures. Dr. Gomes de Oliveira has a background as a clinical and scientific researcher for the NOVA Clinical Research Unit in Lisbon, Portugal.

    National and international peer-reviewed journals, including the Journal of Cranio-Maxillo-Facial Surgery, have published Dr. Gomes de Oliveira’s work. He has been invited to share his findings at national and global meetings, including for the American Academy of Otolaryngology and the European Association for Cranio Maxillo Facial Surgery (EACMFS).

    Dr. Gomes de Oliveira is a member of EACMFS and the Spanish Society of Oral and Maxillofacial and Head and Neck Surgery. He is also a board member of the Portuguese Society of Maxillofacial Surgery.

  • Daphne O. Martschenko

    Daphne O. Martschenko

    Assistant Professor (Research) of Pediatrics (Stanford Center for Biomedical Ethics)

    BioDr. Daphne Oluwaseun Martschenko is an Assistant Professor at the Laurie J. Girand Center for Biomedical Ethics at Stanford. Her scholarship identifies novel ways to examine and enhance the ethical and socially responsible conduct, translation, and interpretation of human genetic research.

    Dr. Martschenko is passionate about fostering public and community engagement with controversial scientific research. She has appeared in the New York Times and on numerous podcasts including Freakonomics Radio. Dr. Martschenko’s work is published in publicly accessible media outlets such as Scientific American and The Conversation. In 2023, she was named one of 10 Scientists to Watch by ScienceNews.

    Dr. Martschenko is author of the book What We Inherit: How New Technologies and Old Myths Are Shaping Our Genomic Future, which she wrote with friend and colleague Sam Trejo, a sociologist at Princeton University. Over the past decade, the field of human genetics has rapidly produced a wide range of never-before-seen genomic tools; together, they debate and discuss a range of social, ethical, and policy issues raised by this so-called DNA revolution. Though there’s plenty the two disagree about, they share a firm belief that—in order to successfully navigate the transition to a society where genetic prediction is increasingly accurate and available—it is vital that society take seriously the impact both of DNA and of pernicious genetic myths.

  • Eric Marxmiller

    Eric Marxmiller

    Advanced Lecturer, Emergency Medicine

    BioI'm Eric Marxmiller, a registered paramedic and Advance Lecturer in the Department of Emergency Medicine, where I also serve as Program Director for Stanford EMS (StEMS) and numerous EMS education classes. I hold paramedic registrations in both the United States and the United Kingdom through the Health and Care Professions Council (HCPC), and maintain active clinical practice in San Francisco's 911 system.

    My career spans over two decades in emergency medicine, from my start as an EMT in 2001 through paramedic certification in 2014, with experience ranging from 911 response and interfacility transport to expedition and event medicine across seven continents. I frequently work as a consultant in executive protection and event medical services on a global basis. As founder of multiple medical service organizations, I've combined frontline clinical work with education and innovation in EMS, contributing to the field through teaching, program development, and entrepreneurial ventures focused on advancing prehospital care.