Our Team

Dr. David Michael Quillen is a Clinical Professor in the Primary Care and Population Health Division at Stanford School of Medicine. He is well-known for his commitment to medical education and his deep interest in fostering growth among medical students and family medicine residents in a compassionate and supportive environment. His residency teaching career started in 1995, and he has received prestigious accolades throughout his career, including the UFHealth Quality Leader Award. Dr. Quillen has been repeatedly recognized as an Exemplary Teacher at his previous institutions and programs.

He joined Stanford in 2024 with a vision to create a new residency program that brings the best of academics and community to train competent and well-rounded physician leaders to serve the community.  He has a passion for resident education and has help train over 250 family medicine physicians.  Four of his former residents are current or retired family medicine residency program directors and many more are residency faculty. 

In addition to his teaching role, Dr. Quillen is an expert in quality improvement in healthcare and medical informatics. He has completed training programs for healthcare leaders at esteemed institutions such as Intermountain Healthcare and the Institute for Healthcare Improvement.

Dr. Quillen was born and grew up in Massachusetts.   He graduated from Colby College, Waterville, ME in 1986 with a B.A. in Chemistry and History.  He started graduate school at Duke University, Durham, NC in 1996 and left in 1998 to start medical school at Wake Forest School of Medicine.  In the summer of 1990, Dr. Quillen married Amy Bailey and because she was starting law school at UNC Chapel Hill, Dr. Quillen transferred and finished his 3rd and 4th year of medical school at UNC.  In 1995 he completed his Family Medicine residency program at Duke University and in 1996 he complete Duke’s Faculty Development Fellowship.

Dr. Quillen’s first faculty position started in the summer of 1996 as an assistant professor at the University of South Alabama in Mobile, Alabama as a core family medicine residency faculty member.  In October of 1998 Dr. Quillen joined the University of Florida, College of Medicine, Department of Community Health and Family Medicine as a core family medicine residency faculty member.  He was promoted to associate professor in 2006.  Over the 21 years at the University of Florida Dr. Quillen participated in a variety of different opportunities that included serving on the COM admissions committee for 6+ years, Associate Chief Medical Information Officer for 2+ years, multiple hospital committees, Treasurer, vice-president and president of the COM faculty Council, chair of the University Faculty Senate and member of the University of Florida Board of Trustees.  In 2019, Dr. Quillen joined the University of Central Florida faculty as associate professor and family medicine residency director for the UCF/HCA North Florida Hospital Family Medicine Residency Program.  Dr. Quillen was promoted to professor in December of 2023.  Dr. Quillen started at Stanford University School of Medicine in February of 2024.

In 2022, Dr. Quillen enlisted and was commissioned as a Major in the Florida Army National Guard.  He has served with HHC 2-124 infantry unit based in Orlando, FL and was deployed twi times for State Emergencies associate with Hurricane Ian and Hurricane Idalia.  In July of 2024, Dr. Quillen was accept in transfer into the California Army Nation Guard and is with the 297th MCAS unit based in San Mateo, CA. Major Quillen was awarded the Army Achievement Medal in 2023 for his selfless service.

Personal:

Dr. Quillen and Amy Quillen have 3 children.  Michael is a family medicine resident at Cone Health in Greensboro, NC.  Joshua is a medical student at Rocky Vista University Osteopathic Medical School in St. Georges, UT.  Emma is an undergraduate at Rollins College in Orlando, FL.

Dr. Quillen has collected a number of different hobbies and activities over the past 60 years.  As a former collegiate swimmer, he continues to swim multiple times a week and considers it his “happy therapy”.  He has a passion for cycling that a few years ago got out of control and resulted in being a part owner in a bicycle store.  After a few falls’ mountain biking and getting out of retail, the cycling focus has become more sensible and less painful.  Woodworking has been a life long hobby and Dr. Quillen is now building his west coast shop so he can continue to make furniture and other useful items. 

Dr. Kala Chandler is from Piedmont, CA and attended medical school at Washington University in St. Louis and residency at L.A. County/USC. Her past teaching experience includes 10 years of proctoring for the Samuel Merritt Physician Assistant program. Her leadership roles include the Site Lead for the Stanford Medicine Partners Pleasanton OB/Gyn office, and UMP OB/Gyn Medical Director.

She is most excited about the opportunity to help residents expand their knowledge of Obstetric and Gynecologic conditions and physical exam skills.

Dr. Tara Farah is a board-certified family medicine physician who will serve as one of the core faculty. She is committed to educating and inspiring future generations of healthcare providers at the Tri-Valley Family Medicine Residency Program. With a strong background in various medical settings, including outpatient clinics, urgent care, and inpatient care, Dr. Farah brings a wealth of experience to her role as an educator.

Dr. Farah obtained her MD from the Medical University of Lublin, Poland, and completed her Family Medicine Residency at the Altru Health System in North Dakota. She is a mentor in procedural skills. Her extensive knowledge of primary care encompasses patients spanning from neonates to geriatrics, and prioritizes creating a welcoming and inclusive environment.

Dr. Farah is continually inspired by her transformative experiences during her training and is enthusiastic about sharing her lifelong love for the art of healing and the science of medicine with residents. She is eager to share her knowledge, experiences, and passion for Family Medicine with incoming residents, aiming to shape the future of healthcare with compassion and excellence.

Dr. Minjoung Go is a clinical associate professor in the Hospital Medicine Division at Stanford University School of Medicine. She has held clinical and administrative leadership roles at Stanford Health Care Tri-Valley, serving as the Designated Institutional Official for the Graduate Medical Education Office and as the Academic Physician-in-Chief at Stanford Health Care - Tri-Valley.

Dr. Go has led several teams to expand Stanford's research and education mission at SHC Tri-Valley. She is passionate about mentorship and is one of the inaugural MODEL leads at Tri-Valley, a department-wide, cross-divisional mentoring and development program. She is actively involved in clinical research related to COVID-19, demonstrating her commitment to advancing medical knowledge and improving patient outcomes.

Dr. Go is enthusiastic about teaching residents, providing mentorship, and guiding those interested in research. She is very excited to meet and teach our incoming family medicine residents.

Dr. Ruikang Liu ("Kong Kong") is a board-certified primary care pediatrician, fellowship trained sports medicine specialist (peds and adults), and registered in musculoskeletal ultrasonography. He aims to help patients become healthier, more active, while staying safe and in less pain.

He got his Bachelor’s from Johns Hopkins University, and medical degree and pediatrics training, including a Chief Instructor year, at Penn State. He then did a sports medicine fellowship at the University of Colorado, where he helped in the care of several notable professional teams including Denver Nuggets, Colorado Rapids, and Colorado Avalanche. Prior to joining Stanford UMP in 2025, he was the APD of the LSU Shreveport Primary Care Sports Medicine Fellowship, where in addition to leading the didactics curriculum, he was also co-head team physician for Grambling State University, medical director for a USA Judo tournament, and ringside physician for USA Boxing amongst many other roles.

Dr. Liu is known nationally in the American Medical Society for Sports Medicine, serving past roles including the Pediatric Residency Representative, Fellowship Class Representative, Co-chair of the Pediatric Curriculum Subcommittee, Co-Chair of the SportsMedRef Subcommittee, and is currently the Chair of the Special Interest Group Subcommittee. He is passionate about medical education, especially ultrasound guided procedures.

Outside of work, Dr. Liu enjoys training martial arts and hiking with his wife and dogs.

Dr. Grace Mitchell is a passionate family physician with special interests in osteopathic manipulative medicine, behavioral health, women’s health, and obstetrics. Originally from Northeastern Ohio, she earned her DO from Ohio University’s College of Osteopathic Medicine, where she was selected as an OMM teaching fellow at the university’s Cleveland Clinic campus. Today, she regularly uses osteopathic manipulation in her practice to help patients achieve better health outcomes. Dr. Mitchell also holds a MS and BA in Nutrition from Case Western Reserve University.

Dr. Mitchell completed her Family Medicine Residency with a focus on Maternity Care at Long Beach Memorial in Southern California. She then joined Stanford Health Care, providing full-spectrum primary care for patients of all ages. She continues to care for low-risk obstetric patients and has delivered babies at Alta Bates Hospital in Berkeley. Dr. Mitchell is fluent in Spanish, having lived in Mexico during part of her childhood.

An early adopter of Stanford’s AI Scribe technology, Dr. Mitchell is passionate about using technology to enhance patient care and streamline workflows. 

She lives with her husband and daughter in Walnut Creek and enjoys hiking, yoga, travel, and complicated board games.

Dr. Parker is from Tulsa, Oklahoma and attended medical school at Emory University and residency at University of California, San Francisco. Her administrative and leadership roles include: Site Lead, Medical Director, Pediatrics for Stanford Medical Partners and Board Member for University Medical Partners. She is most excited about being able to provide a front line, community based pediatric experience for the residency program.

Dr. Orlando Quintero is a board-certified, fellowship trained internist specializing in the diagnosis and treatment of infectious diseases. He is also clinical assistant professor in the Department of Medicine, Division of Infectious Diseases, at Stanford University School of Medicine. As a clinician, Dr. Quintero diagnoses and treats infectious diseases in immunocompromised patients. This includes the prevention, diagnosis and treatment of infections in patients who are immunosuppressed because of Solid Organ Transplantation, Bone Marrow (Hematopoeitic Cell) Transplants, Hematologic Malignancies, Chemotherapy for Solid Tumors, HIV who receive Chemotherapy, Solid Organ or Bone Marrow Transplants Immunomodulators for Auto-Immune Diseases and other forms of immunodeficiency. Dr. Quintero has been teaching infections to learners for over 8 years. He is excited to be faculty for the Stanford Health Care Tri-Valley Family Medicine Residency Program and is thrilled to be part of the training of the next generation of healthcare providers.

Dr. Zhang is a Clinical Associate Professor in the Department of Neurology at Stanford University School of Medicine. She has extensive experience in diagnosing and managing a wide range of neurological conditions, both chronic and acute. As the Neurology Education Lead at Tri-Valley and the site director for both the neurology residency program and the neurohospitalist fellowship program, she oversees the elective rotations for trainees at various levels. She is dedicated to helping trainees become clinicians who not only excel in their field but also prioritize patient-centered care while upholding the highest standards of service.

Her commitment to training the next generation of physicians also extends to the SHC TV Family Medicine Residency Program, where she warmly welcomes family medicine residents and looks forward to contributing to their development as future healthcare leaders.