Tammy T. Chang, MD, PhD

Associate Professor

Tissue engineering and regeneration are the next evolutionary step in surgical practice. Today, surgeons resect, reconstruct, and transplant to treat a diverse array of diseases. In the near future, our armamentarium will increase to include using our surgical skills to induce tissue regeneration in situ or to implant ex vivo engineered organs. Accelerating advances in biotechnology, stem cell biology, and minimally invasive surgery are ripe for convergence, which will lead to the creation of novel surgical treatments to replace diseased or dysfunctional tissues.

Sharon Chiang, MD, PhD

Clinical Fellow

Victoria Chu, MD

Clinical Fellow

Claire Clelland, MD, PhD

Assistant Adjunct Professor

Elizabeth Crouch, MD, PhD

Assistant Adjunct Professor

I am a neuroscientist, a vascular biologist, and a physician in Neonatal-Perinatal medicine. My lab, the Neurovascular Development lab at, studies how brain blood vessels grow and interact with other brain cells. In part, this interest is inspired from the preterm babies that I care for clinically. Approximately 20% of preterm babies born between 24-28 gestation weeks will develop germinal matrix hemorrhage (GMH). This hemorrhage can cause hydrocephalus, cerebral palsy, and death, and unfortunately there are currently no treatments.

Thuy Doan, MD, PhD

Assistant Professor in Res
Proctor Foundation

Fanny Elahi, MD, PhD

Alumni --now faculty at Mt. Sinai

Fanny Elahi is a board-certified neurologist with specific expertise in the evaluation and management of patients with cognitive and behavioral disorders due to degenerative brain diseases such as Alzheimer's disease and related disorders. She completed her bachelor's degree at Columbia University, her MD from Icahn School of Medicine, at Mount Sinai, and her DPhil from Oxford University.

Joanne Engel, MD, PhD

Professor of Medicine

My lab is interested in the complex interplay between bacterial pathogens and host cells. In particular, we study two important human pathogens, Chlamydia trachomatis and Pseudomonas aeruginosa. Our strengths include using multidisciplinary approaches to these studies—allowing the pathogen to be our tutor.

Marlys Fassett, MD, PhD


Please call UCSF Dermatology at 415 353 7800 for clinical care inquiries or appointments. The telephone number listed here is not monitored.

Margaret Feeney, MD


Dr. Feeney is a Professor of Pediatrics in the Division of Pediatric Infectious Diseases and Global Health at UCSF. She is the Principal Investigator of several NIH-funded projects focused on the immune response to malaria and CMV in infants and children. Dr. Feeney is board certified in Pediatric Infectious Diseases and provides clinical care for children with complex infections at UCSF Benioff Children’s Hospital, where she also teaches students and housestaff.

Sandy Feng, MD, PhD


Dr. Sandy Feng is a transplant surgeon who performs liver, kidney and pancreas transplants.

In her research, Feng studies transplantation tolerance, a transplant recipient's ability to maintain normal organ function with minimal or no use of immunosuppressive drugs. With funding from the National Institutes of Health, she has led several multicenter clinical trials to study tolerance in both adult and pediatric liver transplant recipients.

Julie Fiore, MD, PhD