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University of California San Francisco

About Us

The Center for Health Equity in Surgery and Anesthesia (CHESA) is based at the UCSF Institute for Global Health Sciences and is dedicated to increasing access to safe surgery and perioperative care worldwide. In 2020, multiple initiatives and stakeholders, including the UCSF Anesthesia Division of Global Health Equity and the UCSF Center for Global Surgical Studies, came together to form CHESA.

Mission

To expand equitable access to perioperative care through partnerships that strengthen capacity and advance shared priorities across three interconnected fronts: education, research and advocacy & policy.

Vision

We envision a future where the global capacity of surgical, anesthesia, and perioperative care serves all people, everywhere.

Guiding Principles

  • Champion health equity for vulnerable populations
  • Elevate interventions prioritized by local and international partners
  • Harmonize approaches between local and international populations
  • Prioritize implementation and impact evaluation

Meet the Team

The Center for Health Equity in Surgery and Anesthesia brings together leading clinicians, educators, researchers, public health practitioners, and operational leaders to support our mission. Get to know our talented team and partners below.

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Doruk Ozgediz, MD, MSc

Director, CHESA
Professor of Pediatric Surgery, UCSF

Bio

Dr. Ozgediz is Professor of Pediatric Surgery at UCSF, Director of UCSF CHESA and member of the leadership team of the Institute for Global Health Sciences. He trained in medicine at UCSF and completed a general surgery residency at UCSF before pursuing a pediatric surgery fellowship at the Hospital for Sick Children, University of Toronto. Dr. Ozgediz also completed a Master's of Science in Public Health in Developing Countries at the London School of Hygiene and Tropical Medicine. Dr. Ozgediz became involved in surgical collaborations in Uganda in 2003 and since then has been part of multiple collaborations to strengthen surgery and anesthesia care there and in the region, mostly through support of capacity-building initiatives.

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Michael Lipnick, MD

Associate Director, CHESA
Professor of Anesthesia and Perioperative Care, UCSF

Bio

Dr. Lipnick is an anesthesiologist and intensivist at Zuckerberg San Francisco General Hospital, a UCSF School of Medicine graduate, and has completed residency and fellowship training at Harvard’s Brigham and Women’s Hospital and UCSF. His work focuses on critical care, perioperative care, medical education, and health equity, co-founding initiatives such as CHESA and OpenOximetry.org, while also serving as co-Director of the UCSF WHO Collaborating Center for Emergency, Critical, and Operative Care. As an investigator in the UCSF Hypoxia Lab and Dive Medical Officer at the California Academy of Sciences, he leads research on oxygen infrastructure in resource-limited settings, hypoxia tolerance, and pulse oximetry performance disparities.

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Coleen Sabatini, MD, MPH

Associate Director, CHESA
Professor of Pediatric Orthopaedic Surgery and Vice Chair, Department of Orthopedic Surgery, UCSF

Bio

Dr. Sabatini is dedicated to caring for children with musculoskeletal problems both domestically and abroad, and believes that all children should have access to high quality, safe, and affordable orthopaedic care. She is a pediatric orthopaedic surgeon based at the UCSF Benioff Children’s Hospital Oakland in Oakland, California. She serves as Vice Chair for the UCSF Department of Orthopaedic Surgery and Associate Director of UCSF CHESA. Her global surgery work is primarily based in Uganda, where she has been working since 2013 on collaborations to strengthen musculoskeletal care through education and research.

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David Bayne, MD, MPH

Associate Director, CHESA
Assistant Professor of Urology, UCSF
Chief of Urology, ZSFG

Bio

Dr. Bayne is a urologist and Chief of Urology at Zuckerberg San Francisco General Hospital, specializing in urinary stone disease, ureteral strictures, and minimally invasive surgery. After earning his medical degree from Harvard Medical School in 2012, he completed his residency in urology and a fellowship in Endourology and Laparoscopy at UCSF before joining the faculty in 2020. His research focuses on the social and behavioral factors influencing kidney stone disease, aiming to address disparities in treatment and prevention through a deeper understanding of social determinants of health.

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Marissa Boeck, MD, MPH

Associate Director, CHESA
Assistant Professor of Acute Care Surgery, UCSF

Bio

Dr. Boeck is an Assistant Professor in the Department of Surgery at UCSF, serving as an acute care and trauma surgeon at Zuckerberg San Francisco General Hospital and Parnassus. She is the Associate Director of CHESA and the surgery lead for the WHO Collaborating Centre for Emergency, Critical, and Operative Care. Her research and advocacy focus on global public health, injury prevention, trauma system strengthening, and injury survivorship, with projects spanning the U.S., Bolivia, Kenya, Cameroon, and Tanzania.

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Tyler Law, MD, MSc

Co-Director of Research, CHESA
Assistant Professor of Anesthesia and Perioperative Care, UCSF

Bio

Dr. Law completed a five-year residency in Anesthesiology at the University of Toronto, and holds an MSc in Health Policy, Planning and Finance from the London School of Economics and the London School of Hygiene and Tropical Medicine. He is interested in the interface between the surgical system and the rest of the health system, and how these interactions can be optimized. His experience in global health is an outgrowth of this interest, and he has published on knowledge translation in developing countries, as well as completed an internship at WHO in Geneva.

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Kent Garber, MD, MPH

Co-Director of Research, CHESA
Assistant Professor of General Surgery, UCSF

Bio

Dr. Garber is a surgeon and public health researcher whose work combines journalism, global health, and surgery to improve healthcare delivery in conflict-affected regions, particularly through data-driven collaborations with organizations like the World Bank, WHO, and UNICEF. Clinically, he specializes in acute care and trauma surgery, and he is committed to healthcare equity through his ongoing role at UCSF and ZSFG.

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Lia Jacobson, MD, MS

CHESA Fellowship Co-Director
Assistant Clinical Professor of Pediatric Otolaryngology, UCSF

Bio

Dr. Jacobson is a pediatric otolaryngologist specializing in airway disorders, aerodigestive conditions, chronic ear disease, and other ENT issues requiring surgical treatment. She is dedicated to improving surgical education globally, working with ENT training programs in Tanzania and Cambodia, and focusing on capacity building in global surgery, pediatric airway safety, and physician wellness. After earning degrees from UC Berkeley and USC, she completed her medical training at the Keck School of Medicine, followed by a residency in otolaryngology at USC and a fellowship in pediatric otolaryngology at UCSF.

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Cathy Kilyewala, MBChB, MMed

CHESA Fellowship Co-Director
Lecturer, Department of Breast and Endocrine Surgery, Makerere University

Bio

Dr. Cathy Kilyewala is a Lecturer at Makerere University College of Health Sciences Department of Surgery, attached to the Breast and Endocrine Surgery Unit of Mulago National Referral Hospital. She previously worked as Surgeon and Head of Unit at Entebbe Regional Referral Hospital. She is a former Global Partners of Anesthesia and Surgery Senior Scholar. She is passionate about global health and health systems research, as well as training health professionals in surgery. She is a member of the Association of Surgeons of Uganda, the Uganda Medical Association, and The Lions Club. She received the Women in Surgery in Africa outstanding female surgeon award in 2020.

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Mary Nabukenya, MMed

CHESA Fellowship Co-Director
Pediatric Anesthesiologist and Critical Care Specialist, Mulago National Referral Hospital
Lecturer, Makerere University

Bio

Dr. Mary Nabukenya is a lecturer in the Department of Anaesthesia and Critical Care at Makerere University College of Health Sciences and a pediatric anesthesiologist in Mulago National Referral Hospital. She completed her Masters’ training at Makerere University and her pediatric anesthesia fellowship training at BC Children’s Hospital, Vancouver. She is a former Global Partners in Anesthesia and Surgery scholar. Her work is focused on anesthesia safety and quality, and capacity building and systems strengthening in anesthesia and pediatric anesthesia in Uganda through her work with the Association of Anesthesiologists of Uganda and initiatives such as the Paediatric Anaesthesia Training in Africa (PATA) collaborative.

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Sriranjani Padmanabhan, MD

CHESA Fellowship Co-Director
Associate Medical Director for Ophthalmology, ZSFG
Associate Professor and Vice Chair of Diversity, Equity, Inclusion, and Belonging, Department of Ophthalmology, UCSF

Bio

Dr. Padmanabhan is an Associate Professor of Ophthalmology at the University of California, San Francisco, and the Associate Medical Director for the Ophthalmology service at Zuckerberg San Francisco General Hospital and Trauma Center. Dr. Padmanabhan’s primary interests are in the clinical care of marginalized populations and the clinical and surgical teaching of ophthalmology trainees. Her scholarly endeavors lie at the intersection of health equity in ophthalmology and the improvement of eye care delivery in diverse and underserved populations, especially with respect to glaucoma and cataract surgery. She also co-directs the CHESA Fellowship program.

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Erica Langnas, MD, MPH

Associate Director of Research, CHESA
Assistant Clinical Professor of Anesthesia and Perioperative Care, UCSF

Bio

Dr. Langnas is an assistant professor in the Department of Anesthesiology and Perioperative Care. A recent UCSF graduate, she completed her residency and a health equity fellowship at CHESA, now her clinical work is at San Francisco General Hospital. Dr. Langnas received her medical degree at the University of Nebraska and her MPH at Columbia University. Her research focus is on opioid prescribing patterns in surgical patients and health equity in the perioperative period.

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Rebecca Silvers, BSN, MSN, DNP

Director of Education, CHESA
Director, Center for Global Nursing, UCSF
Assistant Clinical Professor of Nursing, UCSF

Bio

Dr. Silvers is a pediatric nurse practitioner and holds clinical positions in pediatric critical care and pediatric neurosurgery at our Benioff Children's Hospitals' Mission Bay and Oakland campuses. She is also an assistant clinical professor at the UCSF School of Nursing and teaches for the pediatric nurse practitioner program. Rebecca has also had a long-standing practice in global health focused on critical care, pediatrics, capacity building, implementation science, and education in low- and middle-income countries (LMIC). She is currently the research lead for the Global Neurosurgery Consortium's nursing team and is working on various projects gathering insight into the nursing and APP peri-op and critical care workforce and looking at outcomes of critical care virtual simulation training. She has also recently launched the Center for Global Nursing at UCSF Institute of Global Health Sciences and is excited to continue working with CHESA as the Director of Education.

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Adrian Gelb, MD

Director of Advocacy and Policy, CHESA
Professor Emeritus of Anesthesia and Perioperative Care, UCSF
Former President, World Federation of Societies of Anaesthesiologists

Bio

Dr. Gelb is Distinguished Professor, Department of Anesthesiology & Perioperative Care, University of California, San Francisco. He served as Professor & Chair of Anesthesia at Western University, Canada, before coming to UCSF as Vice Chair (2004 -2011). Dr. Gelb has served as President of 4 organizations and other leadership roles in multiple national and international Anaesthesia Societies. As of 2022, he was President of the World Federation of Societies of Anaesthesiologists (WFSA). Working with WHO and other global groups, he is a strong advocate for expansion of access to safe anesthesia. He is an active academic with > 300 publications (h-Index 62, citations 14,400) and has served on many international editorial boards. He is an accomplished communicator and has given over 350 invited lectures around the world. He has won awards for research, teaching and mentorship.

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John Rose, MD, MPH

Associate Director of Advocacy and Policy, CHESA
Assistant Professor of Plastic and Reconstructive Surgery, UCSF

Bio

Dr. Rose focuses on the performance of health care systems for patients having surgery. Taking a broad view of health services, he studies the effects of hospital protocols, the dissemination of new technologies, and the effects of health care policy on patient care. His research has received funding from the National Institutes of Health and includes data from patients in numerous countries. He has authored more than 50 scientific manuscripts, and his findings have been featured in landmark initiatives from the Lancet, World Bank and World Health Organization.

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Fred Bulamba, MMed, PhD

Leadership Committee, CHESA
Senior Lecturer and Head of Anesthesia, Busitema University

Bio

Dr. Bulamba is faculty of Health Sciences, Busitema University. His research is focused on anesthesia and anesthetic techniques, anesthesia human resource and education, global anesthesia workforce development and surgical outcomes research. In 2017, with support from WFSA, Fred joined the UCSF team in San Francisco to complete training in medical education and simulation. Dr. Bulamba led the creation of a Bachelor's of Anesthesia program and simulation and skills lab at Busitema University in Mbale, Uganda.

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Phyllis Kisa, MMed

Leadership Committee, CHESA
Head of Department of Surgery, Makerere University

Bio

Dr. Kisa, a pediatric surgeon and the first fellowship-trained pediatric urologist in Uganda, completed her medical education at Makerere University and pursued specialized training in general surgery and pediatric surgery, including fellowships at BC Children's Hospital in Canada. She currently works as a pediatric surgeon in Uganda, serving as Head of the Department of Surgery at Makerere University, with a strong focus on research in perioperative nutrition and improving pediatric surgical care.

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Odi Ehie, MD

Leadership Committee, CHESA
Vice Chair of Opportunity and Outreach, Department of Anesthesia and Perioperative Care, UCSF
Associate Professor of Anesthesia and Perioperative Care, UCSF

Bio

Dr. Ehie is a pediatric anesthesiologist with a deep commitment to medical education, global health equity, and inclusive excellence. She earned her medical degree from the University of Wisconsin-Madison School of Medicine and Public Health and completed her anesthesiology residency at NYU Langone Medical Center. She subsequently pursued fellowship training in pediatric anesthesiology at Stanford's Lucile Packard Children’s Hospital, where she also led global health education initiatives focused on perioperative care and capacity building in Vietnam. She led the development of a health equity curriculum for anesthesia and surgery residents at UCSF and serves as Head of Clinical Skills Curriculum for the UC Berkeley/UCSF Joint Medical Program. Dr. Ehie is currently Vice Chair for Opportunity & Outreach in the Department of Anesthesia at UCSF, where she leads departmental efforts focused on community, opportunity, recruitment, and engagement.

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Cornelius Sendagire, MMed

Leadership Committee, CHESA
Lecturer, Department of Anesthesia and Critical Care, Makerere University

Bio

Dr. Sendagire is a Lecturer in the Department of Anaesthesia and Critical Care, School of Medicine, Makerere University College of Health Sciences. He is a Cardiac Anesthesiologist and Intensivist at the Uganda Heart Institute. He has a keen interest in anesthesia and critical care training, academia, and research. He has published work in critical care medicine, safety in perioperative medicine, and simulation medical education. During the COVID-19 outbreak in Uganda, he has provided leadership in training and coordination of critical care staff in response to the surge in Uganda. He sits on the Scientific Advisory Committee of the Uganda’s Case Management Pillar and majorly contributed to the development of the national COVID-19 critical care guidelines.

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Ally Hamisi Mwanga, MD, MMed, MSc

Leadership Committee, CHESA
Head of Department of Surgery, MUHAS

Bio

Dr. Mwanga is the Head of the Department of Surgery at Muhimbili University of Health and Allied Sciences (MUHAS) and a hepatobiliary surgeon specializing in malignant gastrointestinal conditions. He earned his medical degree and a Master’s in Medicine from Muhimbili University. His research focuses on cancer outcomes, surgical education, and capacity building.

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Amy Fiedler, MD, MS

Leadership Committee, CHESA
Assistant Professor of Cardiac Surgery, UCSF

Bio

Dr. Fiedler is a cardiac surgeon specializing in heart failure and heart transplantation, with a focus on improving patients' quality of life through holistic care and strong patient-provider communication. Her research aims to increase access to heart transplantation by improving organ preservation and procurement techniques. Dr. Fiedler earned her medical degree from George Washington University and completed residencies at Massachusetts General Hospital, and she currently serves as surgical director for Team Heart, providing cardiac surgery in Rwanda.

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Stephanie Lin, MD, MPhil

Leadership Committee, CHESA
Associate Professor of Vascular Surgery, UCSF

Bio

Dr. Lin is a vascular surgeon specializing in aneurysms, arterial occlusive disease, hemodialysis access, embolotherapy, and functional limb restoration, including for amputee patients. She tailors treatments for optimal, long-lasting results and emphasizes patient education, with a philosophy focused on collaboration, sincerity, preparation, and precision. Dr. Lin earned her degrees at Stanford University, completed her residency at UCSF, and fellowship at New York-Presbyterian Hospital, with a strong commitment to global health, medical missions, and healthcare equity.

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Shareef Syed, MBChB, MRCS

Leadership Committee, CHESA
Assistant Professor of Transplant Surgery, UCSF

Bio

Dr. Syed is a general surgeon specializing in abdominal organ transplantation, with expertise in kidney and liver transplantation, laparoscopic donor nephrectomy, and minimally invasive procedures for kidney, liver, and bile duct conditions. His research focuses on liver and kidney transplant outcomes, particularly for patients with liver cancer, and the development of noninvasive tests for kidney rejection. Dr. Syed trained in the UK and at UCSF, where he completed his general surgery residency and abdominal transplantation fellowship, and is a member of several professional organizations, including the American Society of Transplant Surgeons.

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Willieford Moses, MD

Leadership Committee, CHESA
Assistant Professor of Pediatric Surgery, UCSF

Bio

Dr. Moses is a pediatric surgeon specializing in the care of children undergoing surgery as part of cancer treatment and managing complex congenital anomalies. His research focuses on pediatric health equity, specifically developing innovative medical devices and therapeutic tools that can improve health outcomes for children, particularly in resource-constrained settings. Dr. Moses earned his medical degree and completed residencies and fellowships at UCSF and Children’s Hospital Los Angeles, with a focus on surgical innovations.

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Mary Xu, MD

Leadership Committee, CHESA
Assistant Professor of Otolaryngology-Head and Neck Surgery, UCSF

Bio

Dr. Xu is a surgeon specializing in head and neck cancers, with expertise in ablative surgery, microvascular reconstruction, transoral robotic surgery, and endocrine surgery. Her research focuses on improving care for head and neck cancers in resource-constrained health systems, collaborating with health systems in Tanzania and Rwanda through the UCSF Global Cancer Program. Dr. Xu earned her medical degree through the Harvard-MIT Program in Health Sciences and Technology and completed her residency at UCSF, followed by a fellowship in head and neck oncology at the University of Pennsylvania.

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Teresa Kortz, MD, MS, PhD

Leadership Committee, CHESA
Assistant Professor of Pediatrics, UCSF

Bio

Dr. Kortz is an Associate Professor of Clinical Pediatrics in Critical Care Medicine at UCSF and serves as the Program Director of the Faculty Affiliate Program of the Institute for Global Health Sciences and co-director of the Pediatric Global Health Scholars Pathway. She is an NIH-funded researcher focusing on pediatric sepsis etiology, biomarkers, and clinical outcomes in East Africa, and has previously worked as a sepsis consultant for the WHO and contributed to the WHO COVID-19 Clinical Management Pillar. Dr. Kortz is also a member of the UCSF-WHO Collaborating Center and leads international projects through the Pediatric Acute Lung Injury and Sepsis Investigators (PALISI) Network, focusing on acute pediatric critical illness in resource-limited settings.

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Rachel Schwartz, PhD

CHESA Fellowship Monitoring & Evaluation Lead
Assistant Adjunct Professor of Anesthesia, UCSF

Bio

Rachel Schwartz, PhD is a mixed-methods Health Services Researcher focused on system-level interventions for improving clinician and scientist well-being and retention. She has expertise in implementation science and communication science. Other areas of interest include mentoring & sponsorship in academic medicine, exploring the professional needs of physician-scientists, and providing mentorship on global health projects. She currently serves as the Monitoring and Evaluation (M&E) Lead for the CHESA Fellowship program.

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Nichole Starr, MD, MPH

Leadership Committee, CHESA
Assistant Professor of Surgery, UCSF

Bio

Dr. Nichole Starr is an Assistant Professor of Surgery at UCSF at UCSF/Zuckerberg San Francisco General Hospital and a Clinical Advisor for Lifebox Foundation. Her areas of interest are in academic global surgery, surgical quality improvement, and infection prevention, and strengthening trauma care systems in resource limited environments, as well as trauma induced coagulopathy and platelet function in injured patients. Dr. Starr served in the Peace Corps in Ethiopia from 2007 - 2009, and has worked in Ethiopia, Brazil and Liberia on health services research including improving surgical safety, quality of surgical and trauma care, and creating tools and technologies for safeguarding surgical providers during the COVID-19 pandemic.

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Larry Akoko, MD, MMed

Leadership Committee, CHESA
Associate Professor of Surgery and Senior Lecturer, MUHAS

Bio

Dr. Larry Akoko is a consultant surgeon and surgical oncologist with extensive leadership experience in surgical education, policy, and health systems strengthening. He previously served as Head of Department of Surgery at MUHAS. At the national level, he has played key roles in the National Surgical, Obstetric and Anaesthesia Plan (NSOAP), contributing to the design and implementation of strategies to strengthen access to safe, timely, and affordable surgical care. He previously served as the President of the Tanzania Surgical Association (TSA) and is currently the Country Representative for the College of Surgeons of East, Central and Southern Africa (COSECSA), roles through which he advances professional standards, regional collaboration, and workforce development. His clinical and academic interests are in surgical oncology, with a focus on improving cancer care delivery, outcomes, and training in low- and middle-income settings.

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Nathan Brand, MD

Leadership Committee, CHESA
Faculty (General Surgery), University of New Mexico

Bio

Dr. Nathan Brand is a general surgeon at the University of New Mexico. Dr. Brand's international research focuses on access, quality and capacity building of surgical care in East Africa. His current projects are currently based in Dar es Salaam, Tanzania with active collaborations ongoing in Kenya and Uganda.

Our Partners

We collaborate with numerous initiatives and institutions around the world.

Faculty Grants & Awards

CHESA Faculty Projects have been funded by multiple departments at UCSF as well as external funding agencies and foundations. We are grateful to all of our supporters, including those listed below and those who wish to remain anonymous.

CHESA Programatic Funders

CHESA has been funded by multiple departments at UCSF as well as external funding agencies and foundations. We are grateful to all of our supporters, including those listed below and those who wish to remain anonymous.