Board of Directors

Taejoon Ahn, M.D. became the president of John Muir Medical Group (JMMG) in January of 2014. He oversees a medical group of over 300 clinicians, mostly in primary care. JMMG is the exclusive contracted provider of primary care services for John Muir Health, partnering closely for over 20 years. Prior to the presidency, Dr. Ahn served as vice president and medical director of urgent care services for JMMG. He also worked as faculty for the University of California, San Francisco's National HIV/AIDS Clinicians' Consultation Center. He is currently an Assistant Clinical Professor of Family & Community Medicine for UCSF.

Dr. Ahn also serves as director on the board of John Muir Health as well as the board of Canopy Health. Canopy Health is a joint venture between multiple provider groups to offer a large network in the San Francisco Bay Region.

Dr. Ahn received his medical degree from the University of California San Francisco, where he also completed a residency in Family & Community Medicine. He received his Masters in Public Health with an emphasis in Epidemiology from UC Berkeley. He is an alumnus of the California Healthcare Foundation's Leadership Fellowship and is a certified physician executive with the American Association for Physician Leadership (formerly the American College of Physician Executives).

Kishore Nath, MD has been with John Muir Medical Group since October 2009 practicing Family Medicine. As the Medical Director of John Muir Health’s free mobile health clinic since 2010, Dr. Nath has actively pursued his passion for providing care to the vulnerable and underserved.  In 2016 he joined the John Muir Health Family Medicine Residency Program, as their first Core Faculty member. Helping develop and implement the John Muir Health Residency program has been a fruitful experience combining his love of teaching and research with high quality patient care.

Dr. Nath is an assistant professor of Family and Community Medicine with UCSF.  He is also a Clinical Adjunct Professor of Family Medicine at USC’s Keck School of Medicine, and Adjunct Assistant Professor with Touro University.

Dr. Nath received his undergraduate education at the University of California, Berkeley then returned home to attend medical school at the University of Southern California, Keck School of Medicine and completed his Internship and Residency at Long Beach Memorial Medical Center.  He served as Chief Resident from 2000-2001 and received the resident teacher award in 2001 upon graduation from the Society of Teachers in Family Medicine. He is a graduate of the University of California, San Francisco Faculty Development Fellowship as well.  Dr. Nath is board certified in Family Medicine.

Born and raised in Southern California, he remains a devoted Dodgers and Lakers fan.  He enjoys watching his kids grow and tries to return to the beach whenever he can.  Dr. Nath is currently working on a project to bring supplies and evidence based training to a medical clinic on the outskirts of Arequipa, Perú. Service to patients at home and abroad is invigorating for Dr. Nath and teaching the next generation of physicians to serve with humility and enthusiasm is his small contribution to the John Muir Health community.