School of Medicine
Showing 7,901-7,950 of 12,915 Results
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Rohollah Nasiri
Postdoctoral Scholar, Radiation Physics
Current Research and Scholarly InterestsMy current research focuses on developing tumor-on-a-chip models for preclinical radiation therapy research.
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Aussama Nassar, MD, MSc,FACS, FRCSC
Clinical Associate Professor, Surgery - General Surgery
BioDr. Nassar is board-certified in both General Surgery and Surgical Critical Care in the United States and Canada, underscoring his exceptional expertise in these fields. He holds a Master of Science in Health Science Education from McMaster University, Canada, further solidifying his strong academic foundation.
Currently, Dr. Nassar serves as the inaugural Director of the Emergency General Surgery Service and the Director of the Surgical Critical Care Fellowship Program at Stanford University. He is also the founder and director of the Surgery Resident Coaching Program. With over 12 years of clinical and academic experience at premier tertiary care referral centers across North America, Dr. Nassar brings unparalleled knowledge and leadership to his roles.
Dr. Nassar's clinical interests include trauma, acute care surgery, critical care, and a particular focus on abdominal wall reconstruction. As a dedicated clinician-educator, he is a certified simulation educator and serves as a course director for ATLS and ASSET programs. His research is centered on advancing surgical education, with an emphasis on fostering the development of non-technical skills in surgical training.
In addition to his educational initiatives, Dr. Nassar is actively engaged in developing innovative assessment tools for surgical trainees and addressing burnout among physicians and healthcare professionals. With a strong national and international presence, Dr. Nassar continues to shape the future of surgical education and healthcare delivery through his leadership, research, and advocacy. -
Arutselvan Natarajan
Senior Research Scientist - Basic Life, Rad/Molecular Imaging Program at Stanford
Current Role at StanfordSenior Scientist
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Fateme (Fatima) Nateghi
Postdoctoral Scholar, Biomedical Informatics
BioAs a postdoc researcher at the Division of Computational Medicine, I find myself at the exciting intersection of machine learning and healthcare. My journey began with a PhD in Biomedical Sciences from KU Leuven in Belgium, where I explored the complexities of machine learning algorithms and their transformative potential in clinical settings. My research focused on adapting these algorithms for time-to-event data, a method used to predict when specific events may occur in a patient’s future.
At Stanford, my work centers on building trustworthy AI systems to enhance healthcare delivery. I develop and evaluate machine learning models that integrate structured electronic health records (EHRs) and unstructured clinical notes to support real-world clinical decision-making. My recent projects include predicting treatment retention in opioid use disorder, improving antibiotic stewardship for urinary tract infections, and enabling digital consultations through large language models (LLMs). I'm particularly interested in embedding-based retrieval and retrieval-augmented generation (RAG) methods that help bridge cutting-edge AI research with clinical practice.
My role involves not just advancing the integration of machine learning in healthcare but also collaborating with a diverse team of clinicians, data scientists, and engineers. Together, we're striving to unravel complex healthcare challenges and ultimately improve patient outcomes. -
Kalpana Isabel Nathan
Adjunct Clinical Professor, Psychiatry and Behavioral Sciences
BioKalpana Nathan, MD is an adjunct clinical professor, Psychiatry and Behavioral Sciences at the Stanford University School of Medicine. After completion of residency and research fellowship at Stanford, she served 4 years at the San Francisco General Hospital/UCSF, gaining experience in the areas of substance use, HIV and public health. She worked at Palo Alto VA for more than a couple of decades. She served as chief medical director at Mental Health and Addiction services, El Camino Health for two and a half years, and later was the Executive Medical Director of Custody Behavioral Health at Santa Clara County. She is a certified physician executive. She has worked and taught in various settings, both inpatient and outpatient, as well as private and public sectors. She is board certified in General, Addiction and Forensic Psychiatry, as well as Lifestyle Medicine. Her interests include wellness and self-care for physicians, women's health, health creation and resiliency building for the community. She is a certified meditation teacher, has completed sprint and Olympic triathlons, and enjoys traveling around the world. She received the outstanding community clerkship preceptor award in 2010 and the Arthur L. Bloomfield Award in Recognition of Excellence in the Teaching of Clinical Medicine in 2015 at the Stanford University School of Medicine.
Recent Publications:
1. Yen Li, M, Mata C, Nathan K: Is Life Unlivable for Youth in Post-DEI America?: Understanding Rising Suicide Rates Across Diverse Youth Groups Through Traditional Suicide Paradigms. Healthcare 2025 Oct, 13(20), 2585 https://doi.org/10.3390/healthcare13202585
2. Tran BX, Nguyen TT, Boyer L, Fond G, Auquier P, Nguyen HSI,Ha Thi Nhi Tran HTN, Nguyen HM, Choi J, Le HT, Latkin CA, Nathan KI, Husain SF, et al: Differentiating people with schizophrenia from healthy controls in a developing country: An evaluation of portable functional near infrared spectroscopy (fNIRS) as an adjunct diagnostic tool. Frontiers of Psychiatry 2023 Jan 26; vol 14
3. Tatum, J, Nathan, K: The USA. Lancet Psychiatry 2021, 8(5):365-366
4. Nathan N & Nathan KI: Suicide, Stigma, and Utilizing Social Media Platforms to Gauge Public Perceptions. Front. Psychiatry 2020 January 13
5. Tran BX, Nathan KI, Phan HT, Hall BJ, Vu GT et al: A Global Bibliometric Analysis of Services for Children Affected by HIV/Acquired Immune Deficiency Syndrome: Implications for Impact Mitigation Programs (GAPRESEARCH). AIDS Rev. 2019 Oct 3;21(3).
6.Lee A, Nathan KI: Understanding Psychosis in a Veteran With a History of Combat and Multiple Sclerosis. Fed Pract. 2019 Jun;36(Suppl 4):S32-S35.
7. Tran BX, Ha GH, Vu GT, Nguyen LH, Latkin CA, Nathan K, McIntyre RS, Ho CS, Tam WW, Ho RC: Indices of Change, Expectations, and Popularity of Biological Treatments for Major Depressive Disorder between 1988 and 2017: A Scientometric Analysis. Int J Environ Res Public Health. 2019 Jun 26;16(13) -
Yasodha Natkunam, M.D., Ph.D
Ronald F. Dorfman, MBBch, FRCPath Professor of Hematopathology
Current Research and Scholarly InterestsMy research interests focus on the identification and characterization of markers of diagnostic and prognostic importance in hematolymphoid neoplasia.
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Vaidehi Natu
Physical Sci Res Scientist
Current Research and Scholarly InterestsDr. Vaidehi Natu is a developmental neuroscientist. Her research program aims to study how the human brain matures from infancy to adulthood, as it acquires new life skills and behaviors: What are the origins of the cellular and molecular mechanisms of brain development during infancy? How does the trajectory of neural mechanisms unfold during development, as school-aged children acquire complex skills such as reading or face recognition? What are some of the parallels in brain development across primate species? What changes occur in the brain in developmental disorders such as autism, multiple sclerosis, and dyslexia?
She uses a multi-modal approach by combining various neuroimaging techniques including functional magnetic resonance imaging (fMRI), quantitative MRI (qMRI), and diffusion MRI (dMRI) as well as behavioral observations, histology, comparative methods across humans and macaques, and intracranial electroencephalography. Combining complementary techniques provides a unified understanding of how the brain’s anatomy, function, and behavior co-develop to achieve complex human skills. -
Shaghayegh Navabpour
Postdoctoral Scholar, Psychiatry
Current Research and Scholarly InterestsMy research investigates how genetic, transcriptomic, and epigenomic mechanisms shape brain function and contribute to psychiatric disorders, with a special focus on PTSD. By combining large-scale human genomic data with molecular neuroscience approaches, I aim to identify cell-type-specific pathways and therapeutic targets that advance our understanding and treatment of mental health conditions.
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Manchula Navaratnam
Clinical Professor, Anesthesiology, Perioperative and Pain Medicine
BioDr. Manchula Navaratnam is a Clinical Professor of Anesthesiology, Perioperative, and Pain Medicine at Stanford University, specializing in Pediatric Cardiac Anesthesia. With over 16 years of expertise in the perioperative care of pediatric patients with complex cardiac conditions, Dr. Navaratnam serves as the anesthesiology lead for pediatric cardiac transplantation, ventricular assist devices, single ventricle physiology and perioperative hemostasis management.
Dr. Navaratnam’s research includes pivotal work on left ventricular outflow tract velocity time integral (LVOT VTI) as a measure of ventricular function, now widely utilized at Stanford Children’s Hospital. Dr Navaratnam has led multidisciplinary clinical studies to improve care for single ventricle physiology patients, developed standardized pathways for perioperative hemostasis management, and recently contributed to an FDA-funded multicenter trial investigating pulse oximetry accuracy in congenital heart disease patients with darker skin tones.
As a dedicated mentor and educator, Dr. Navaratnam founded and directs the Pediatric Cardiac Anesthesia Learning (PCAL) workshop for fellows nationwide and leads Stanford’s undergraduate course, “Mending a Broken Heart.” Dr Navaratnam's mentorship has supported numerous trainees and collaborators, resulting in award-winning presentations and impactful research contributions. Dr. Navaratnam is an associate editor for Pediatric Anesthesia, an active peer reviewer for leading journals, a coach and board member for the Congenital Cardiac Anesthesia Society, and an active contributor to national committees and task forces advancing faculty development and the field of pediatric cardiac anesthesia.
Dr. Navaratnam's mission is providing exceptional and compassionate patient care while training the next generation of leaders in the field. -
Ashwin K Nayak
Clinical Assistant Professor, Medicine
Current Research and Scholarly InterestsConversational AI, Large Language Models, Digital Therapeutics
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Jayakar V. Nayak, MD, PhD
Associate Professor of Otolaryngology - Head & Neck Surgery (OHNS) and, by courtesy, of Neurosurgery
On Partial Leave from 09/16/2025 To 04/30/2026Current Research and Scholarly InterestsUpper Airway Stem Cell Biology, Fate, and Repair/Regeneration of the Airway Epithelium to treat Upper and Lower Airway Disorders
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Rosamond Naylor
William Wrigley Professor, Professor of Environmental Social Sciences, Senior Fellow at the Woods Institute, and at the Freeman Spogli Institute, Emerita
Current Research and Scholarly InterestsResearch Activities:
My research focuses on the environmental and equity dimensions of intensive food production systems, and the food security dimensions of low-input systems. I have been involved in a number of field-level research projects around the world and have published widely on issues related to climate impacts on agriculture, distributed irrigation systems for diversified cropping, nutrient use and loss in agriculture, biotechnology, aquaculture and livestock production, biofuels development, food price volatility, and food policy analysis.
Teaching Activities:
I teach courses on the world food economy, food and security, aquaculture science and policy, human society and environmental change, and food-water-health linkages. These courses are offered to graduate and undergraduate students through the departments of Earth System Science, Economics, History, and International Relations.
Professional Activities:
William Wrigley Professor of Earth Science (2015 - Present); Professor in Earth System Science (2009-present); Director, Stanford Center on Food Security and the Environment (2005-2018); Associate Professor of Economics by courtesy (2000-present); William Wrigley Senior Fellow, Freeman Spogli Institute for International Studies and the Woods Institute for the Environment (2007-2015); Trustee, The Nature Conservancy CA program (2012-present); Member of the Scientific Advisory Board for the Beijer Institute for Ecological Economics in Stockholm (2011-present), for the Aspen Global Change Institute (2011-present), and for the Aldo Leopold Leadership Program (2012-present); Aldo Leopold Leadership Fellow in Environmental Science and Public Policy (1999); Pew Fellow in Conservation and the Environment (1994). Associate Editor for the Journal on Food Security (2012-present). Editorial board member for Aquaculture-Environment Interactions (2009-present) and Global Food Security (2012-present). -
Rahim Nazerali, MD, MHS, FACS
Clinical Associate Professor, Surgery - Plastic & Reconstructive Surgery
BioDr. Nazerali specializes in complex reconstruction, microsurgery, and aesthetic and cosmetic surgery. He excels at breast reconstruction using free autologous tissue and performs advanced techniques such as the minimally invasive superficial inferior epigastric artery (SIEA) flap, as well as the deep inferior epigastric artery perforator (DIEP) flap procedure. In addition to autologous reconstruction, Dr. Nazerali utilizes the latest techniques in implant-based breast reconstruction. His techniques and results have made him a leading instructor and lecturer at national and international institutions, societies and conferences.
In addition to breast reconstruction, Dr. Nazerali performs both aesthetic as well as whole body reconstructive procedures. He has a busy aesthetic practice focusing on breast augmentation, face and body rejuvenation as well as body contouring. In his reconstructive practice, he specializes in abdominal wall reconstruction as well as post-trauma tissue transfers. For every patient in his care, his goal is to optimize restoration of both form and function.
To help advance the field of plastic and reconstructive surgery, Dr. Nazerali conducts research into outcomes of breast reconstruction, augmentation, and reduction. Dr. Nazerali has published widely: well over 100 journal articles and conference proceedings. Topics include breast reconstruction after radiation; advances in surgical technique; and, the use of virtual, augmented, and mixed reality systems in plastic surgery practice and education. His work has appeared in Annals of Plastic Surgery, Plastic and Reconstructive Surgery, Surgery, the European Journal of Plastic Surgery, the Aesthetic Surgery Journal, and elsewhere.
Dr. Nazerali focuses not only on improving his patient’s lives but also our ability to deliver care as an institution. He is on the Medical Executive Council at Stanford Healthcare, serves as a committee member in the American Society of Plastic Surgeons as well as the California Society of Plastic Surgeons. In his spare time, he volunteers his time to provide reconstructive surgical services to adults and children in need worldwide. -
Joel Neal, MD, PhD
Professor of Medicine (Oncology)
Current Research and Scholarly InterestsI am a thoracic oncologist who cares for patients with non-small cell lung cancer, malignant mesothelioma, and other thoracic malignancies. I design and conduct clinical trials of novel therapies in collaboration with other researchers and pharmaceutical companies. These generally focus on two areas, 1) targeted therapies against particular mutations in cancers (for example EGFR, ALK, ROS1, HER2, KRAS, MET, and others) and 2) the emerging field of immunotherapy in cancer, using anti PD-1/PD-L1 therapies in combination with other agents, and also developing cellular therapies. I also collaborate with other researchers on campus to apply emerging technologies to cancer therapy, for example, circulating tumor DNA detection. Additionally, in my role as the Cancer Center IT Medical Director, I coordinate projects relating to our use of the electronic health record to improve provider efficiency and facilitate patient care.
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Michael Nedelman
Adjunct Lecturer, Medicine - Primary Care and Population Health
BioDr. Michael Nedelman leads the Stanford Health Equity Media Fellowship. He previously covered health and medicine as a journalist for CNN, earning an Emmy nomination for the network's acclaimed reporting on the Covid-19 pandemic. As producer for the inimitable Dr. Sanjay Gupta, he was part of a team known for excellent reporting and storytelling — also winning a Cronkite Award for tackling misinformation during the pandemic. Before CNN, he was a digital producer for the ABC News Medical Unit, worked on public health campaigns at the World Health Organization in New Delhi, and trained at the Stanford Journalism Program as part of the university's Global Health Media Fellowship. He received his MD from Stanford and did his undergraduate work in film at Yale.
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Kevin Nee, MD, PhD
Affiliate, Department Funds
Resident in SurgeryBioDr. Nee is a general surgery resident at Stanford, Department of Surgery. He completed his MD/PhD training at UC Irvine: School of Medicine in the Medical Scientist Training Program. His dissertation research focused on defining pericytes, fibroblasts, and adipocytes in breast cancer using single-cell RNA sequencing.
