Dr. Sonya Kim, MD, MBA


The best way to find yourself is to lose yourself in the service of others.

                                                        - Dalai Lama

Dr. Kim is a Board-Certified Emergency Physician who attended Oberlin College(Biochemistry) and Oberlin Conservatory(Opera) in Ohio, SUNY Stony Brook School of Medicine in New York and trained at the MCP Hahnemann University Medical Center in Pennsylvania in Emergency Medicine where she served as a Chief Resident. She also completed her dual MBA from Columbia Business School in New York and UC Berkeley Haas School of Business in California.  As a former partner with California Emergency Physicians(CEP) America, she has been working at an urgent care center in Marin since 2003. She has also been volunteering at the San Francisco Opera House as a House call doctor since 2002. She is the Founder and the Medical Director of the Best MD House Calls.


CA License: A79002

Our Doctors


Dr. Lewin attended UC Berkeley and the University of Texas where he completed his M.D. and Ph.D. degrees in 1999. He subsequently completed his Internal Medicine internship at California Pacific Medical Center and Emergency Medicine residency at UCSF’s trauma center in Fresno, California. He has served on the faculties of Stanford University and UCSF and is Board Certified in Emergency Medicine as well as being an elected Fellow of the American College of Emergency Physicians. 

In addition to emergency medicine, Dr. Lewin is a recognized expert in the field of expedition and travel medicine. He has published numerous papers and book chapters in these areas of interest. He has won teaching and research awards and has been featured in leading medical journals such as the Lancet as well as on television (e.g. NBC's Dinosaur Graveyard) and the New York Times Science Times. He has recently been nominated to be a Fellow of the California Academy of Sciences. In addition to holding vaccination clinics and making house calls, Dr. Lewin advises and personally works on major scientific expeditions. He also consults on travel and expedition medicine for private individuals and groups. 

CA License: A73541

Dr. Matthew R. Lewin, MD, PhD, FACEP