Jeremy Fish

Jeremy Fish, MD
Family Medicine Residency Program

A residency educational leader for over two decades, Dr. Fish came to John Muir Health after a decade of serving as the Program Director of the Contra Costa Family Medicine Residency Program. He also previously worked with the California Association of Family Physicians (CAFP) to create the California Residency Network, which consists of more than 50 residency programs statewide.

“I’m excited about leading the development of our John Muir Health Family Medicine Residency Program. With a strong emphasis on leadership development, team care, digital health and comprehensive clinical training, we are committed to building the future of family medicine.”

Read Dr. Fish’s Welcome Letter

Contact Dr. Fish


Kishore Nath

Kishore Nath, MD
Associate Program Director
Family Medicine Residency Program

Joining the residency in 2016 as our first Core Faculty member, Dr. Nath has been working as a Family Medicine physician in private practice since 2001. During this time, he has served as a preceptor for students from the University of Southern California’s Keck School of Medicine (his alma mater), as well as for residents in the Long Beach Memorial Family Medicine Program, where he served as Chief Resident. His current preceptor list includes students from the University of California San Francisco, and the University of California Berkeley - UCSF Joint Medical Program. He is a graduate of the University of California, San Francisco Faculty Development Fellowship.

As the Medical Director of John Muir Health's free mobile health clinic since 2010, Dr. Nath has a passion for providing care to the vulnerable and underserved. Born and raised in Southern California, he remains devoted to teaching his children to cheer for his childhood favorite teams in Southern California.

"I’m committed to cultivating a passion for the underserved and harnessing residents’ intellectual curiosity into becoming the quality physicians we need for the future."

Learn more about Dr. Nath


Ravi Kullar

Ravi Kullar, MD
Assistant Program Director
Family Medicine Residency Practice

Dr. Kullar became the residency program’s second Core Faculty member in 2016. She is originally from the San Francisco Bay Area and attended the University of California, Davis for medical school. There, she was a recipient of the Regents Scholarship and a member of the Alpha Omega Alpha (AOA) Honor Society. After graduating, she began residency in Family Medicine at Contra Costa Regional Medical Center, graduating in 2008. She is also a graduate of the University of California, San Francisco Faculty Development Fellowship. Prior to joining John Muir Health, Dr. Kullar was a faculty member at the Kaiser Permanente Napa-Solano Family Medicine Residency. One of her major areas of interest is teaching residents efficiency skills for their practice. Her other major interest is in outpatient women's health, including women's health procedures.

“I am passionate about teaching residents how to make their careers in clinical medicine sustainable, rewarding, and even fun.”

Learn more about Dr. Kullar


Lisa Quinones

Lisa Quinones, MD
Assistant Program Director
Family Medicine Residency Practice

Dr. Quinones has been training residents in both clinic and hospital settings since 2008, but was trying out medical education and loving it since her second year in medical school at the University of California, San Francisco.  She completed her family medicine residency at Contra Costa Regional Medical Center, and stayed for 9 years afterward to pursue resident training and primary care.  Her passions are global health, teaching, and vulnerable population health.

 “The future of primary care in the US is no less complicated than it is necessary, and I am honored to help teach the wonderful healers who will be forging that future.”

Learn more about Dr. Quinones


Elizabeth Iten

Elizabeth Iten, MD
Faculty, Family Medicine Physician
Family Medicine Residency Practice

Dr. Elizabeth Iten grew up in Guatemala and moved to California after high school to pursue higher education. She earned her undergraduate degree in Biology and Spanish from Santa Clara University. She earned her Master’s and Medical degree through the UCB-UCSF Joint Medical Program, followed by residency at Kaiser Napa-Solano. She is board certified in Family Medicine and completed a Fellowship in Community Medicine & Global Health at Kaiser Napa-Solano in 2018. Her passions are community engagement and social justice, diversity in the health field, and medical education. In her spare time, Dr. Iten enjoys spending time with family, catching up on movies/tv, and being outdoors.

Learn more about Dr. Iten


Jessica Clima

Jessica Clima, MD
Faculty, Hospitalist
Family Medicine Residency Program

Dr. Clima has worked at John Muir Health as a hospitalist since 2014. She completed her residency training and chief resident year at California Pacific Medical Center in San Francisco. She joined the John Muir Health residency team in 2016 as the Inpatient Clinical Director. She is interested in training future family medicine physicians in acute care conditions with an emphasis on transitions of care.

“I am passionate about training well rounded and competent family medicine physicians who will be the future of John Muir Health.”


Jessica Clima

Jerry H. Gelbart, MD, FAPA
Faculty, Psychiatry
Family Medicine Residency Practice

Dr. Gelbart is board certified in psychiatry and a Fellow in the American Psychiatric Association. He has 30 years' experience as a clinician, teacher, and physician leader. He received Bachelor of Science in Psychology at University of Michigan, Ann Arbor, Medical Doctor at Ohio State University Medical School, and psychiatry residency at UCLA. Dr. Gelbart was president of East Bay Psychiatric Association for several years, followed by vice-president of Northern California Psychiatric Society. He was psychiatric consultant for JFK University, then on the Adjunct clinical faculty at Stanford, participating in psychotherapy research and training psychology interns, and with the John Muir Health family medicine clinic since July 2017.

Clinical experience includes inpatient and outpatient work with patients who have mood, anxiety, cognitive, psychotic, and trauma-related disorders. His orientation is bio-psycho-socio-spiritual, utilizing psychopharmacology, empirically-based psychotherapies, and behavior/lifestyle change.

"Primary care physicians are the frontline in identifying and treating patients who are suffering emotionally. It is a rare honor to be in a place where I can help train the next generation of physicians to be aware, compassionate, and effective in addressing these symptoms."    

Learn more about Dr. Gelbart


Jay Hariharan

Jay Hariharan, MD
Faculty, Musculoskeletal and Sports Medicine
Family Medicine Residency Practice

Dr. Hariharan is a family physician, who is fellowship trained in Primary Care Sports and Musculoskeletal Medicine. After residency in Family Medicine, he completed fellowship training in Primary Care Sports Medicine at the University of Washington/ Providence Sacred Heart program. He has taken care of high school, college and professional athletes in the outpatient and sideline settings. Dr. Hariharan has special interest and skills in the prevention and management of musculoskeletal problems and sports related injuries. He is thrilled to be a part of the residency program, training future family physicians in Musculoskeletal and Sports Medicine, and providing quality care to the community.

“I am really excited about training family medicine physicians and empowering them to achieve a high level of competence and comfort in musculoskeletal examination techniques and procedural skills, which are the essential building blocks for the goal of providing high quality care in primary care Sports and Musculoskeletal medicine.”

Learn more about Dr. Hariharan


Eric Ottey


Eric Ottey, MD MPP

Dr. Eric Ottey is originally from San Diego, CA and spent a majority of his life in Southern California. He earned his undergraduate degree in Biology from UC Riverside. He then went on to study medicine at UCLA and Charles R. Drew University through the UCLA PRIME Program. During that time, he also studied Health Policy, earning a Master's Degree in Public Policy. He completed his Family Medicine residency here at our John Muir Family Medicine Residency Program. He is board certified in Family Medicine. He is passionate about bringing care to our diverse patient population, engaging our community, and lifting up future leaders through education and community outreach. Outside of medicine he enjoys cooking, watching movies, and hiking outdoors.


rachel oliver


Rachel Oliver, MD

Dr. Oliver joined John Muir Health and the residency program as a Core Faculty physician in 2021. She is a California native and grew up in San Diego. She earned her Bachelor of Arts in French from Wellesley College in Massachusetts and spent two years working in cancer genomics before California beckoned her back home for medical school. She earned her medical degree from the UC Davis School of Medicine in 2018. She is an alumna of the John Muir Health Family Medicine Residency Program, where she served as Chief Resident in her final year and helped to develop its resident leadership track. Her passions include women’s and vulnerable populations’ health, physician leadership, and medical education. In her free time, she enjoys yoga, cooking, reading, and gardening, in no particular order.


krystal pong

Krystal Pong, Pharm.D.
Program Manager, Ambulatory Care Pharmacy

Dr. Krystal Pong is the Program Manager for Ambulatory Care Pharmacy Services at John Muir Health and started the ambulatory care pharmacy program at John Muir Health in 2014. Dr. Pong graduated from University of California, San Francisco School of Pharmacy and then completed her residency training at the San Francisco Veterans Affairs Medical Center with a focus in ambulatory care. She has worked in a variety of pharmacist-run ambulatory care clinics including disease state management, anticoagulation, pain management and medication therapy management, as well as the poison control center and population health management. Dr. Pong is committed to utilizing ambulatory care pharmacy services to improve patient care and support the health care teams.

“I am dedicated to optimizing inter-professional collaboration and helping to develop effective health care providers focused on patient-centered, team-based care.”


Gayatri Boddupalli Madduri

Gayatri Boddupalli Madduri, MD, MAT
Faculty, Pediatric Hospitalist
Family Medicine Residency Program

Dr. Madduri has been a pediatric hospitalist with John Muir Health since 2018 and currently serves as the inpatient pediatrics and newborn nursery co-director. Her clinical appointment is through Stanford University. Dr. Madduri was born in India and grew up in the San Francisco Bay Area. After completing her Bachelor of Science in physiology and neuroscience at UCSD, she taught high school biology through Teach For America in Baltimore and earned a Master of Arts in Teaching from Johns Hopkins. She completed medical school at Boston University and pediatrics residency at UCSF where she also served as chief resident from 2017-2018. She is a part of the 2020 Advancing Pediatric Educator Excellence (APEX) cohort, a nationally recognized program to train physicians in best practices for pediatric medical education.


Tristan C. Nichols

Tristan C. Nichols, DO, FAAP
Faculty, Pediatric Hospitalist
Family Medicine Residency Program

Dr. Nichols began working as a pediatric hospitalist at John Muir Health in 2017 and currently serves as one of the co-directors of the inpatient pediatric and newborn nursery rotations. He has been an East Bay native for the last fifteen years— after receiving a Bachelor of Arts in Public Health from UC Berkeley, he completed his osteopathic medical education at Touro University California in Vallejo. He then began pediatric residency at Children’s Hospital of Oakland (now UCSF Benioff Children’s Hospital) and served an additional year as chief resident from 2016-2017 prior to beginning his career as a pediatric hospitalist at John Muir Health.


Tristan C. Nichols

Heidi Joshi, PsyD
Manager Integrated Behavioral Health
Family Medicine Residency Program

Dr. Joshi came to us after 12 years teaching and practicing behavioral health in primary care. She has been a faculty member at Oregon Health and Science University’s rural family medicine residency and has been a faculty member at the Western Michigan University Homer Stryker, MD School of Medicine in their department of Medical Education. She has also been a behavioral provider at Providence Medical Group in Portland, OR.

Dr. Joshi joined our team in 2020 and excited to teach residents about health behavior change in their patients and patient-centered communication skills, along with other behavioral health skills. “It is a privilege to walk alongside patients and residents as they grow toward reaching their goals both clinically and educationally.” Dr. Joshi got her PsyD degree from the California School of Professional Psychology and her Master’s degree in marital and family therapy from Northwestern University. She is also a graduate of the Behavioral Science and Family Systems Educator Fellowship affiliated with the Society for teachers of Family Medicine.