Leadership Team
A diverse team of professionals

Dr. Popat is a Board Certified Family Physician with a Doctor of Medicine and Masters in Public Health from Tufts University Medical School in Boston. He returned to his California roots to serve in the O’Connor Hospital/Stanford Family Medicine Residency Program in San Jose. Dr. Popat is currently completing a two-year Health Care Leadership fellowship with the California Health Care Foundation and UCSF.
In addition to his work at Marin Community Clinics, Dr. Popat is a Commissioner with Partnership Health Plan of California, which covers 550,000 people with MediCal coverage in 14 counties. It is his many experiences leading diverse teams that have prepared him for a leadership role in community healthcare, including stints in India and South Africa, working with local medical professionals to improve preventive care for diabetes patients and to describe the psychosocial factors surrounding HIV infection.

Dr. Chibrás is an Internal Medicine physician who specializes in the care of adults. His focus is on primary care, which includes preventive care as well as chronic disease management. As Chief Medical Officer Dr. Chibrás, in addition to his role as a physician, oversees all clinical staff and specialists, as well as the Quality Improvement Department.
Dr. Chibrás has a degree in Biology from the University of California, Santa Cruz, a Doctorate in Medicine from Michigan State University College of Human Medicine and completed his residency at the University of Iowa and Michigan State University. Dr. Chibrás also has experience as volunteer Clinical Faculty at several Universities in California and Michigan. Additionally, Dr. Chibrás recently completed a Fellowship at the University of California, Davis in Primary Care Psychiatry in 2016 and a Leadership Fellowship through the California Health Care Foundation (CHCF) San Francisco, California in 2013. He resides with his family in Petaluma, California and enjoys hiking, fishing, cycling and photography.

Prior to moving to Marin County, she practiced at Mountain Valley Health Centers serving Siskiyou and neighboring counties in northern California. A native of Colombia and self-described coffee lover, Dr. Kadera is fluent in English and Spanish.

Originally from the Midwest, Lizzie has spent extensive time living and traveling in Latin America. She currently resides in San Rafael, with her husband and two young children. She loves living in Marin and taking advantage of all the outdoor activities this beautiful County has to offer. She enjoys doing yoga, hiking, reading, and playing the violin.
Lizzie earned her PhD and MSW from the University of California, Berkeley. She completed an NIMH-funded post-doctoral fellowship in Clinical Services Research at the University of California, San Francisco. She earned her BA from the University of Michigan, where she triple majored in Social Science, Spanish and Latin American Studies. Dr. Horevitz is a fellow in the California Health Care Foundation’s Health Care Leadership Fellowship (cohort 18).


Leah was born and raised in Michigan, obtaining her undergraduate degree from the University of Michigan and her Masters in Information System Securities from Walsh College. After working in the healthcare field for several years before landing at Marin Community Clinics, Leah says that the most rewarding aspects of her current role is the palpable difference she makes in our patients lives, every day.

Leigha’s passion for community healthcare was ignited through serving the marginalized populations in south Louisiana, especially the LGBTQ community and people living with HIV at the clinics she managed and directed. Leigha has shared that working for a community health center and with a team of providers and staff who are passionate about serving our patients, makes her role here a perfect combination of her dream job and her life’s work. This quote by Owen Arthur has influenced her career in healthcare, “For he who has health has hope; and he who has hope, has everything.”

Prior to entering the field of healthcare in 2010, Ms. Beltran worked in the private sector where she received extensive customer service training. Her customer service background, experience in building strong teams, and training leaders to run efficient, productive departments led to improved efficiencies and creation of best practices in clinic operations. Ms. Beltran is passionate and dedicated to community health centers. She brings dedication and a commitment to streamlining processes and procedures designed to improve the experience of both patients and employees. We are excited that she has joined our team and will utilize her skills in operations and customer service, including empathy and attitude training, to improve dental operations efficiencies and enhance our staff training programs.

Prior to joining MCC, Isabela worked as Research Program Coordinator at Mount Sinai School of Medicine, New York, in its Center of Excellence in Alzheimer’s Disease. While there she administered a budget of $20M in federal, foundation and industry research grants, while ensuring compliance with external funding agencies, as well as, internal regulatory requirements. Her early work was dedicated to implementing social programs as Senior Program Coordinator at George Soros Foundation in her native Romania.
Isabela is a Psychologist by education in Romania, with a master in Psychology of Mass Media and Group Communication. She has received her certification in healthcare compliance form the Healthcare Compliance Association Board in the US.

Prior to joining MCC, Teresa served as the Director of Human Resources for Veteran Resource Centers of America, a non-profit organization that provides housing and behavioral health services for homeless veterans. She worked as a Human Resource and Operations Manager for Kohl’s in various Northern CA locations. She owned and managed Honey Badger Coffee House in Rohnert Park, CA. She was a Teaching Assistant for the Strategic Management Course at Sonoma State University. The common thread in her work over the years: her commitment to creating opportunities that help people have better lives.
Teresa has the distinction of a Senior Certified Professional (SHRM-SCP) through the Society of Human Resource Management. In addition, she holds a Master of Business Administration Degree and Bachelor of Science Degree from the School of Business at Sonoma State University.

Prior to Judith’s tenure at Marin Community Clinics, she was an adjunct faculty member in San Jose State University’s Health Science Department, was a smoking cessation facilitator at San Francisco General Hospital, and designed an HIV-prevention intervention program for injection drug users. She served as Marin Center Director at YWCA of San Francisco & Marin overseeing youth mentorship and employment programs. Judith is dedicated to equal access to health care for all and appreciates that her job at Marin Community Clinics allows her to interact with community members and raise funds to support the meaningful health care programs that the Clinics offers.
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