School of Medicine
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Sachin Rajpal, MD
Clinical Instructor, Ophthalmology
BioDr. Sachin Rajpal is an ophthalmologist at Stanford Health Care. He is also a clinical instructor in the Department of Ophthalmology at Stanford University School of Medicine.
Dr. Rajpal specializes in cataract surgery and minimally invasive glaucoma surgery (MIGS). He also focuses on the medical and surgical management of pterygium (growths on the white of the eye) and ocular (eye) surface disease. His approach emphasizes comprehensive, patient-centered care, combining clinical excellence with clear communication and individualized treatment planning. He is particularly passionate about improving access to surgical care and enhancing the patient experience through the thoughtful application of emerging technology.
His research interests include patient adoption of digital diagnostic tools, technology-driven vision testing, and the development and regulation of leading-edge ophthalmic devices. He is also part of the Stanford Medicine Byers Eye Institute team working on a whole-eye transplant project focusing on vision restoration. Dr. Rajpal is actively involved in translational research that bridges clinical needs with scalable solutions.
Dr. Rajpal’s work has been presented at major conferences, including the Association for Research in Vision and Ophthalmology, American Society of Refractive and Cataract Surgery, and American Academy of Ophthalmology (AAO). He has authored peer-reviewed studies on topics ranging from corneal melt (corneal breakdown) to divergence insufficiency (outward vision problems), wearable visual field testing, and economic models of ocular disease burden. -
Lindsey Ralls
Clinical Assistant Professor, Anesthesiology, Perioperative and Pain Medicine
BioLindsey Ralls, MD, is a Clinical Assistant Professor in the Department of Anesthesiology, Perioperative and Pain Medicine at Stanford University. She is originally from California, and after undergraduate training at Stanford University she completed her medical degree and internship at Baylor College of Medicine in Houston, TX. She then returned to the Bay Area and completed her Anesthesia residency (2008) and Obstetric Anesthesia fellowship (2009) at Stanford University.
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Asheen Rama
Clinical Associate Professor, Anesthesiology, Perioperative and Pain Medicine
BioDr. Asheen Rama is a member of the Division of Pediatric Anesthesiology. He regularly organizes and conducts medical simulations across various hospital units, utilizing both traditional in-situ methods and advanced immersive technologies, such as virtual and augmented reality. He also collaborates with the Stanford CHARIOT program, leading efforts to integrate immersive technologies into medical education and working to scale these innovations nationally and internationally.
Dr. Rama teaches a diverse range of learners, including medical students, residents, fellows, and nurses. His academic interests focus on simulation, medical education, and artificial intelligence. Additionally, he has a strong interest in the medical humanities and has taught several Stanford undergraduate and medical student courses that explore the intersection of art and medicine. -
Sneha Ramakrishna
Assistant Professor of Pediatrics (Hematology/Oncology)
BioSneha Ramakrishna obtained her B. A. from the University of Chicago and her M.D. from the Cleveland Clinic Lerner College of Medicine at Case Western Reserve University. In medical school, through the Howard Hughes Medical Research Scholar Award, she joined Dr. Crystal Mackall’s laboratory, where she designed and developed various GD2 CAR-Ts and tested them in preclinical models. During her residency training in Pediatrics at the Children’s Hospital of Philadelphia, she cared for some of the first patients treated with CD19 CAR T cells, learning the power of this therapy first-hand. During her fellowship in Pediatric Hematology/Oncology at the Johns Hopkins/National Cancer Institute combined program, she worked with Dr. Terry Fry. She evaluated the mechanism of CD22 CAR T cell relapse in patients by developing an antigen escape model and establishing a deeper understanding of the effects of antigen density on CAR-T phenotype, expansion, and persistence (Fry…Ramakrishna…Mackall Nat Med, 2018; Ramakrishna, et al., Clinical Cancer Research, 2019). Since arriving at Stanford, Dr. Ramakrishna leads an interdisciplinary team that designs, develops, and successfully implements a robust correlative science platform for our novel CAR-T therapies. Analyzing patient samples from our first-in-human GD2 CAR-T trial (NCT04196413) treating a universally fatal cancer, diffuse midline glioma (DMG), we identified that intracerebroventricular CAR-T administration correlates with enhanced pro-inflammatory cytokines and reduced immunosuppressive cell populations in cerebrospinal fluid as compared to intravenous CAR-T administration (Majzner*, Ramakrishna*, et al., Nature 2022 *co-first authors). Her research program evaluates unique sets of patient samples using novel single-cell immune profiling to identify the drivers of CAR-T success or failure. Building on these findings, her team assesses approaches to enhance CAR-T efficacy and translate these findings to the clinic.
Clinically, Dr. Ramakrishna cares for children with solid tumors and treats hematologic, solid, and brain tumor pediatric patients with CAR T cell therapies in the Cancer Cellular Therapies program. -
Chandra Ramamoorthy
Professor of Anesthesiology, Perioperative and Pain Medicine (Pediatric), Emerita
Current Research and Scholarly InterestsNeuro protection and neurologic outcomes in cardiac patients prior to and concurrent with cardiac surgery and catheterization
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R J Ramamurthi
Clinical Professor, Anesthesiology, Perioperative and Pain Medicine
Current Research and Scholarly InterestsProspective collection of pediatric regional block procedures and complications on to a national database
