Jeremy Fish, MD
Director, 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, 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

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Catalina Triana, MD
Faculty, Family Medicine Physician
Family Medicine Residency Practice

A nationally recognized leader in behavioral health and motivational interviewing, Dr. Triana is passionate about teaching skills to facilitate health behavior change. She has been teaching behavioral medicine, patient-centered communication and primary-care counseling skills to family medicine residents and medical students since 2002. Prior to joining John Muir Health, Dr. Triana was a faculty member and Associate Program Director at the University of Texas, Medical Branch.

“I am committed to helping our residents reach their full potential as family physicians.”

Learn more about Dr. Triana

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Ravi Kullar, MD
Faculty, Family Medicine Physician
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

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Lisa Quinones, MD
Faculty, Family Medicine Physician
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

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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

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Dan Thwaites, MD
Faculty, Family Medicine Physician
Family Medicine Residency Practice

Dr. Thwaites is board certified in Family Medicine, Hospice, and Palliative Medicine, and joined our faculty in January of 2018. He graduated from UCSF Medical School and completed his residency at Contra Costa Family Medicine Residency Program. After residency, under the National Health Service Corps., he worked for an underserved community clinic, which included a weekly homeless clinic. In 1996, he joined the faculty of Stanislaus County Family Practice Residency and held positions as their outpatient Clinic Director, HIV Medical Director, inpatient and outpatient medicine attending, and Geriatric outpatient consult physician. During these years, he frequently performed home visits on his homebound and terminally ill patients requiring him to work closely with home health and hospice. This would eventually lead him to working full time in hospice for over 10 years, which included caring for patients in a 16-bed hospice house and starting an inpatient palliative care program. He has cared for patients in rural communities and through to the inner city of San Francisco. Throughout his entire career he has been a teacher of nurses, mid-levels, and residents. He brings to our team a wide breath of clinical experience and knowledge, and we are pleased to have him as one of our faculty.

My goal is to teach residents the essential skills of being a family practitioner, so when they graduate they will have the ability and confidence to take care of patients of all ages.” 


Robert Eidus, MD, MBA
Faculty, Family Medicine Physician
Family Medicine Residency Practice

Dr. Eidus is nationally and regionally recognized as a leader in Family Medicine in the areas of health policy, innovative practice styles, leadership, quality, payment reform, and addressing physician burnout. He spent 11 years in Family Medicine residency education having served as a Program Director and Department Chair. In 2011 he helped create the well-respected Vanguard Medical Group and served as its President from 2011 until his move to California in 2018.

Dr. Eidus served on the AAFP Commission on Practice and Quality for five years and was the Chair of that Commission in 2017, where he was a champion of reducing the administrative workload for family physicians and reducing unnecessary documentation requirements. Clinically, Dr. Eidus is a champion of Family Physicians practicing comprehensive and accessible care. His passions are lifestyle medicine and practicing Integrative Medicine.

Dr. Eidus received his BS from Bucknell University and MD from Robert Wood Johnson- Rutgers Medical School and his MBA from Kellogg Graduate School of Management- Northwestern University. He completed a two-year fellowship in Integrative Medicine at the University of Arizona. He believes strongly in lifelong learning, and enjoys exercise, golf, photography, jazz, classical music, and opera.

“I am so honored to be a part of this progressive residency within a progressive organization that is committed to training Family Medicine Residents for not only what we need now but for the skills needed in the future and with a strong bent towards caring for medically underserved individuals. I find the faculty and residents here to be stimulating and invigorating and it allows me to have a spring in my step each day as I go to work.”   

Learn more about Dr. Eidus


Melissa Gerdes, MD, FAAFP, CHCQM
Executive Medical Director, Clinical Effectiveness and Integration
Faculty, Family Medicine Physician
Family Medicine Residency Practice

A nationally recognized leader in Value-Based Provider Networks and Accountable Care, Dr. Gerdes enjoys teaching the next generation of family physicians skills to help them thrive in the changing healthcare delivery landscape. Prior to joining John Muir Health, Dr. Gerdes built and led one of the best performing Medicare Shared Savings Programs in the country at Methodist Health System in Dallas, Texas. She is also certified in healthcare quality and management. Dr. Gerdes trained at Loyola University Stritch School of Medicine in Chicago, where she was a member of the Alpha Omega Alpha (AOA) Honor Society and graduated cum laude. She completed residency at the University of Texas Health Center at Tyler, where she was Chief Resident. Dr. Gerdes also served as President of the Texas Academy of Family Physicians.

“I am committed to helping our residents develop the skills they need to flourish in our changing healthcare environment.”   

Learn more about Dr. Gerdes


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, 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

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John Crockett, MD
Faculty, Obstetrics and Gynecology
Family Medicine Residency Practice

Dr. Crockett is a family practitioner, originally from the Bay Area, raised in a medical family where both father and brother were general practitioners. He graduated from St. Louis University School of Medicine and did his internship at Highland Hospital in Oakland, and his FP residency in Martinez at the Contra Costa County Hospital. He stayed on as a registrar in Ob-Gyn, teaching family practice residents for 12 years. Since then he has been in private practice, doing a full spectrum of care, including Ob and Gyn., where he has had over 6000 deliveries.  He joined the residency teaching staff in November 2016.

"I have always felt it is a privilege to be both physician and teacher, and very much look forward to helping develop an excellent residency program at John Muir Health."

Learn more about Dr. Crockett


Nicole Steinmuller, MD
Faculty, Obstetrics and Gynecology
Family Medicine Residency Practice

Dr. Steinmuller grew up in Chicago, IL. She earned her undergraduate degree in Biology from Williams College in Massachusetts. Dr. Steinmuller attended Medical School at Tufts University, followed by family medicine residency at Boston University Medical Center. She is board certified in Family Medicine. Dr. Steinmuller has lived most of her adult life in Boston, Massachusetts and just recently moved to the Bay Area. She is looking forward to being part of the John Muir Health Physician Network where she can provide quality care to the communities we serve. In her spare time, Dr. Steinmuller enjoys the outdoors, reading, movies, traveling and spending time with her family, her husband and three year old daughter. 


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.”


Angel Parker, MD
Faculty, Hospitalist
Family Medicine Residency Practice

Dr. Angel Parker is a British South African who has travelled extensively. She has worked at John Muir Health as a Hospitalist since 2012 and she joined the residency team in 2016 as a Residency Lead. Dr. Parker graduated in family medicine after completing her residency at Natividad Medical Center in 2012 and graduated from the Faculty Development Fellowship at the University of California, San Francisco 2017. Her undergraduate and post graduate medical school training were completed in the United Kingdom at Newcastle University and Warwick University respectively and she completed two years of residency training in the West Midlands Deanery in the UK.

Dr. Parker is passionate about teaching. She has a particular interest in the physical examination, recognition of the ‘sick patient’ and assessment of biopsychosocial influences and needs for each patient. She is also passionate about global health and has worked in Manguzi Hospital in KwaZulu Natal and hopes to do much more of this throughout her career.

I am incredibly privileged to help residents develop as astute, curious and empathetic clinicians with a strong foundation and love for the work.”


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.”


John Zuorski, MD
Executive Director, Graduate Medical Education

Prior to his current role, Dr. Zuorski served as past president of John Muir Medical Group, a 250-member primary care medical group within John Muir Health’s physician network. Dr. Zuorski is also a professor of clinical medicine at the University of California, San Francisco. With a longstanding interest in primary care education and training, as well as in the implementation of a vibrant and functional medical home model, Dr. Zuorski believes that the key to success in these endeavors is training family medicine physicians to become leaders within the medical delivery system.

“I have endeavored over the years to develop a voice for primary care within the medical community and earnestly want to include the voices of the family medicine residents in that discussion.”


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