Stanford University


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  • Alejandro Sebastian Cazzulino

    Alejandro Sebastian Cazzulino

    Clinical Instructor, Orthopaedic Surgery

    BioI am originally from New York City. I went to Columbia University, where I earned my BA in Neuroscience and Behavior. I then went to the Perelman School of Medicine at the University of Pennsylvania, where I earned my MD. I then moved to the West Coast and completed my orthopedic surgery residency training at the University of California, San Francisco (UCSF). I am now an Adult Reconstruction Fellow in the Department of Orthopedic Surgery at Stanford University.

  • Lynette Cegelski

    Lynette Cegelski

    Monroe E. Spaght Professor of Chemistry and Professor, by courtesy, of Chemical Engineering

    Current Research and Scholarly InterestsResearch in the Cegelski laboratory is driven by the need to uncover and define the chemistry that underlies outstanding challenges in human health, the environment, and sustainability. Beyond discovery, we use chemistry as a tool to innovate and create solutions to these pressing problems. The laboratory is highly interdisciplinary, designing experimental approaches to understand how complex biological systems are built, organized, and controlled, and then perturb and influence assembly processes. The lab develops new methods and uniquely leverages: (1) small molecules in new biochemical assay development, chemical genetics approaches, and therapeutic discovery in infectious diseases, (2) fluorescence and electron microscopy coupled to analytical HPLC, mass spectrometry, and complementary biochemical techniques, and (3) spectroscopy, particularly solid-state NMR, to uncover new “dark matter” and define chemistry in insoluble, heterogeneous and complex assemblies relevant to human health, plants, and the ocean.

    Long-standing efforts in the laboratory focus on defining mechanisms underlying bacterial biofilm formation and identifying new antibiotic and anti-virulence strategies, including advancing therapeutic candidates for the most difficult-to-treat infections. Through these efforts, we uncovered a new chemical structure in nature: phosphoethanolamine (pEtN) cellulose. Cellulose is the most abundant biopolymer on earth and this discovery provided the first experimental validation of a naturally produced chemically modified cellulose. We are developing alternatively modified celluloses and polysaccharides and advancing new solutions for ecofriendly, sustainably sourced, and recyclable materials. Collectively, our projects span disciplines from molecular structure and assembly chemistry to living microbial communities and natural marine systems, while aiming to translate fundamental discoveries into therapeutic and materials solutions.

  • Sierra Mei Lin Centkowski, MD

    Sierra Mei Lin Centkowski, MD

    Clinical Assistant Professor, Dermatology
    Clinical Assistant Professor, Dermatology

    BioDr. Sierra Mei Lin Centkowski is a board-certified Clinical Assistant Professor of Dermatology at Stanford University. She received both her medical degree and Master’s in Bioethics from the Perelman School of Medicine at the University of Pennsylvania and completed her dermatology residency at Stanford. Her clinical interests include general dermatology, including skin cancer, acne, psoriasis, atopic dermatitis and dermatologic surgery. She believes that patient empowerment and partnership provide the foundation for effective, compassionate and holistic care.

  • Alma-Martina Cepika

    Alma-Martina Cepika

    Assistant Professor of Surgery (General Surgery)

    Current Research and Scholarly InterestsCepika Lab studies human immune tolerance. Using cellular immunology, genomics, and gene engineering, we aim to understand: 1) the role of human thymic regulatory T cells (Tregs) and inducible type 1 regulatory T (Tr1) cells in resistance to anti-tumor immunity and cancer immunotherapy, and 2) the interplay between innate and adaptive immunity in the pathogenesis of human inflammatory bowel disease (IBD). Our overarching goal is to leverage our discoveries for improving patient outcomes.

  • Giovanna Ceserani

    Giovanna Ceserani

    Professor of Classics

    Current Research and Scholarly InterestsIntellectual history, data science in the humanities, ancient and modern historiography, history of archaeology, early modern travels and explorations of the past

  • Hsien-Hwa Alice Cha

    Hsien-Hwa Alice Cha

    Clinical Assistant Professor, Medicine

    BioDr. Hsien-Hwa Alice Cha is a Clinical Assistant Professor of the Division of Hospital Medicine in the School of Medicine. A Bay Area native, she received her undergraduate degree from University of California, Berkeley with Honors in Molecular Cell Biology - Biochemistry. She completed her medical education at New York Medical College and her Internal Medicine Residency at Kaiser Permanente Santa Clara in 2016. She joined the Division of Hospital Medicine at Stanford Health-Care in Tri-Valley in 2016 as a hospitalist. She led the Tri-Valley Section as Section Chief from 2020-2023, during which she expanded the section’s clinical capabilities to include orthopedic pre-op care, and dedicated nocturnal care with nocturnists. Her interest in medical education led her to co-found Stanford Health-Care Tri-Valley’s Clinical Academy in 2019, a program designed for high school juniors and seniors interested in exploring medicine as a career. She was the recipient of the Department of Medicine’s Teaching Award for the Tri-Valley Division in 2022. Her other interests include clinical implications of metals, opioid stewardship, bioethics, undergraduate medical education, and physician leadership development.

    Outside of work, she enjoys spending time with her two young children, cooking toddler meals, and watching crime dramas.