Lydia Wong

Dr. Laura Vaughan is an internal medicine physician specializing in travel medicine and women's health, serving patients at Stanford Primary Care in Los Altos, California. With a strong educational background from Weill Cornell Medical College and residency at Stanford University Hospital, she is dedicated to providing compassionate and thorough care to her patients. Dr. Vaughan is highly regarded for her attentive and responsive approach, consistently receiving positive feedback for her ability to explain medical situations clearly and involve patients in their care decisions. Her commitment to patient satisfaction is reflected in her impressive ratings and numerous testimonials from grateful patients. Generated from the website

Dr. Chang is a board-certified endocrinologist. She is a Clinical Assistant Professor in Stanford Medicine’s Division of Endocrinology and, by courtesy, the Department of Neurosurgery. She specializes in pituitary disorders, including prolactinomas, Cushing disease, acromegaly, non-functional pituitary masses and cysts, and hypopituitarism, as well as transgender health and gender-affirming hormone care.

Dr. Nawal L. Atwan Johansen, MD, FACP is a Board Certified Internal Medicine Physician. She practices as a primary care internal medicine physician in Silicon Valley and the Bay Area. She received her BA from Princeton University, MD from Harvard Medical School, and Internal Medicine Residency training at Stanford Hospital and Clinics. She served on the Stanford Medical School faculty as Associate Clinical Professor of Medicine. In recognition of her excellence in patient care, she received the Stanford Health Care Faculty Recognition Award for Patient Centeredness for achieving the 99th percentile of patient satisfaction and likelihood to recommend scores. Dr.