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A Catalyst for Talent

Ravenswood Family Health Center (RFHC) is a catalyst for talent, for people with a keen interest in supporting the health care needs of the underserved. Our staff is as diverse as our patient population: 47% Latino, 9% Pacific Islander, 11% African American, and 33% Caucasian/other. Since Spanish, Tongan or Samoan is the first language of 74% of our patients, having a bi-lingual staff is essential.

It is the professional skills of our staff and their sensitivity to our patients that determine how effective we are as a health care organization. Our bi-lingual/bi-cultural staff has both expert health care knowledge and skills and firsthand knowledge of life in low income, culturally diverse communities. This combination allows RFHC to bridge cultural barriers and create a bridge to health care for the underserved residents of our service area.

As a staff we hold to a high standard. Every week there are training sessions to help us improve. Licensed professionals receive a week off and an expense allowance for continuing medical education (CME).

To learn about the dedication and competence of our exceptional staff read the short bios under each staff category.

Brad Hamann, MHS, PA

Family Practice Physician Assistant

Brad completed the Physician Assistant Program at Duke University Medical Center in 2003 and graduated from the University of California, San Diego with a BS in Biochemistry in 1996.  He served with the Peace Corps for two years in Ecuador. For five years prior to coming to RFHC he was a Physician Assistant at the Family HealthCare Network in Orosi, California.

Lisa Lestishock, PNP

Pediatric Nurse Practitioner

Lisa Lestishock joined our pediatric team in 2002. Her first encounter with community medicine was as a public health nurse in the barrio of Guatemala City. She completed nurses training at Villanova University and Advanced Practice Pediatric Nursing at University of California, San Francisco. Lisa splits her time between Ravenswood Family Health Center and Lucile Packard Children’s Hospital, where she works on their mobile clinic and specializes in the care of high-risk and homeless adolescents.

Yogita Butani Thakur DDS, MS

Dental Director, Ravenswood Family Dentistry

Dr. Yogita Thakur trained as a dentist in India at the VYWS Dental College and Hospital (1991-1996). She received her Masters of Science in Dental Public Health at the University of Iowa College of Dentistry. She then completed a fellowship at UCSF School of Dentistry’s Centers to Address Disparities in Oral Health and obtained her certificate in Pediatric Dentistry at UCSF School of Dentistry and was chief resident. She was also a Clinical Scholar at UCSF’s School of Global Health from 2008-2010. She has been the recipient of a number of awards, including the AAPHD leveret Award and an NIH funded COHORT Training Grant. Her key interests include childhood caries.

Sonia Menchavez, OD, MPH

Optometry Director

Dr. Sonia Menchavez received her Doctor of Optometry degree as well as her Master in Public Health at University of California, Berkeley. While studying at UC Berkeley, she was the first optometry student to receive the Albert Schweitzer Fellowship which is designed to prepare the next generation of leaders to address underlying causes of health inequities. Dr. Menchavez is passionate about developing sustainable vision care for underserved communities. As the Optometry Director at Ravenswood, she has played an integral part in developing the clinic’s first in-house optometry department. In her spare time she enjoys hiking, salsa dancing and spending time with family.

Luisa Buada, RN, MPH

Chief Executive Officer

Luisa Buada has over 36 years experience in health care administration, management and organizational development. She was the founding Executive Director of both Clinicas de Salud in the Salinas Valley and of Berkeley Primary Care Access Clinic. She cofounded LifeLong Medical Care in Berkeley as part of a merger with Over 60 Health Center in 1996. She participated as a consultant in the development of Ravenswood Family Health Center (RFHC) in East Palo Alto. After serving 12 months as Interim Chief Executive Officer (CEO) she became the Permanent CEO of RFHC in November of 2003. Luisa received her Bachelor of Science degree in Nursing from the University of California, San Francisco (UCSF) School of Nursing in 1977 and her Master’s degree in Public Health (MPH) Policy and Administration from the University of California, Berkeley in 1990. In March 2010, she was inducted into the San Mateo County Women’s Hall of Fame. Recently, Luisa was awarded the 2016 Visionary of the Year Award sponsored by The San Francisco Chronicle and the School of Economics and Business Administration at St. Mary’s College.

Allison Adachi, DDS

Dentist

Dr. Allison Adachi recieved her degree in Dental Surgery from the University Of California, San Francisco, School of Dentistry in June 2011. After receiving her degree, Dr. Adachi completed her Residency with a certificate in Advanced Education in General Dentisry from UCSF Lutheran Hospital in June 2012.  Dr. Adachi currently practices dentistry with several other private groups throughout the Bay Area and provides patients with oral health education and emergency treatments.

Wayne Yost, CPA, CFE

Chief Financial Officer

Wayne Yost has extensive experience in financial management of community hospitals, regulatory compliance, internal and external audit program development, compliance management, financial analysis, and investigation. He is a Certified Public Accountant and Certified Fraud Examiner. He is a member of the California Society of Certified Public Accountants, the Northern California Chapter of Healthcare Financial Management, the American College of Forensic Examiners and the Association of Certified Fraud Examiners. He received a Bachelor of Arts degree in Healthcare Administration from St. Mary’s College in Moraga, CA.

Isabel Quiñonez, MPH

Women's Health Services Manager

Isabel Quiñonez is currently pursuing a Master’s in Public Health at San Jose State University. She received a Bachelor’s of Science in Health Science, with a concentration in Health Services Administration, from San Jose State in December 2006 where she was a Dean’s Scholar.  Isabel first came to RFHC as a summer intern through the Health Career Connection program before joining RFHC in 2007.  She now oversees our Women’s Health Services, including the mammography program and our Comprehensive Perinatal Services Program.

Jaime Chavarria, MD

Chief Medical Officer

Dr. Jaime Chavarria has been in family practice for over 17 years. He was Chief Resident at the Family Practice department at University of Southern California/California Medical Center and received his Medical Degree at the University of California, San Diego, Medical School.  From 1994 to 2002, he worked with the San Jose Medical Center and prior to that he worked in a four family-physician medical group in Los Angeles that served a multi-cultural population. He served as a faculty member and preceptor for the University of Southern California School of Medicine, Family Practice Program at California Medical Center, and was a part-time faculty member at the Whittier Family Practice Program. He is very interested in redesigning healthcare to be more patient centric, efficient, effective and in working with more closely with clinical partners to coordinate care and community groups to address the social determinants of health.

Reshma Thadani, MD, MPH

Pediatrician

Dr. Thadani received her B.A. in Child Psychology and Spanish from Tufts University.  She then completed her Master’s in Public Health in Population and Family Health from Columbia University.  She received her medical degree from Drexel University College of Medicine and completed her pediatric residency at Children’s Hospital and Research Center Oakland in 2006. . Prior to joining RFHC in 2008, Dr. Thadani worked for two years at Bancroft Pediatric Medical Group in San Leandro.  She is on the general pediatrics faculty at the Stanford University School of Medicine and is interested in reducing rates of asthma and obesity in underserved populations.

Justin Wu, MD

Associate Medical Director, Family Practice, Clinical Informatics Officer

Originally from the Bay Area, Dr. Justin Wu received his Medical Degree at New York Medical College, and completed his residency training in family medicine at the University of California, San Francisco and San Francisco General Hospital in 2007.  He joined a community clinic in Denver, CO, and served on the faculty at the University of Colorado Family Medicine Residency Program before joining the RFHC medical team at our Belle Haven Clinic (which is now closed and part of our main health center).  He has done international medical outreach and missions in Mexico and Nicaragua.

Yogita Butani Thakur DDS, MS

Chief Dental Director

Dr. Yogita Thakur trained as a dentist in India at the VYWS Dental College and Hospital (1991-1996). She received her Masters of Science in Dental Public Health at the University of Iowa College of Dentistry. She then completed a fellowship at UCSF School of Dentistry’s Centers to Address Disparities in Oral Health and obtained her certificate in Pediatric Dentistry at UCSF School of Dentistry and was chief resident. She was also a Clinical Scholar at UCSF’s School of Global Health from 2008-2010. She has been the recipient of a number of awards, including the AAPHD leveret Award and an NIH funded COHORT Training Grant. Her key interests include childhood caries.

Kathleen Yau, DDS

Dentist

After receiving a degree in general dentistry from the University of California at San Francisco in 2009, Dr. Yau completed a Lutheran Medical Center residency at the Shasta Community Health Center in Redding, Ca.  Following residency, Dr. Yau practiced dentistry with a several private groups before joining the staff of Ravenswood Family Dentistry.

Dental Residents

Ravenswood Family Dentistry is a site for the Lutheran Medical Center-UCSF residency program in Clinical-based Advanced Education in General Dentistry.  We welcome two dental residents to our dental staff.

Sharon DiPierro, MD

Pediatrician

Dr. Sharon DiPierro completed her undergraduate studies in 2006 at Brown University with a major in Community Health. After earning her medical degree in 2010 from the Alpert Medical School at Brown University, she spent her Pediatric Residency at the University of California, Davis. Her primary areas of interest are teen health and working in underserved communities. During residency, she was part of the first group of physicians from UC Davis to practice at The Effort, a federally-qualified health center in Sacramento’s Oak Park neighborhood.

Rebecca A. Pinto, PA-C

Physician Assistant, Certified

Rebecca is a graduate of Yale University School of Medicine Physician Associate program and is a Board Certified Physician Assistant in Primary Care and Surgery. She has 20+ years experience in gynecology and in adolescent medicine and primary care. Rebecca began her career on the orthopedic surgery staff at the Lahey Clinic near Boston, and was a long-time staff member of Planned Parenthood Golden Gate where she was Lead Clinician and Trainer.

Ivonne Velado, MHS, PA

Family Practice Physician Assistant

Completed the Physician Assistant program at Duke University Medical Center in 2001 and graduated from University of California in San Diego with a double major in Biology and a BA in Literature in 1995.  Prior to joining RFHC, Ivonne worked as a Physician Assistant at the County’s Willow Clinic and most recently at Family HealthCare Network in Visalia, California.

Jessica Chiu, MURP

Development, Planning and Evaluation Director

Jessica Chiu is highly experienced in grant writing and management as well as program planning and evaluation. She joined RFHC in 2013 as its Grants Development Manager, where she not only wrote and packaged grant proposals, but also managed grants throughout their entire life cycles. Prior to joining RFHC, she worked at another federally qualified health center in the Bay Area where she wrote and managed an extensive portfolio of government, foundation, and corporate grants. Jessica holds a Master’s degree in Urban and Regional Planning from the University of California, Irvine and a Bachelor’s degree in Community and Regional Development from the University of California, Davis. She is getting her second Master’s degree in Public Health from the University of California, Berkeley.

Amy Wolfe, M.P.H., FNP

Family Nurse Practitioner

Amy joined the staff of RFHC in December 2001 and has provided primary care services to adult patients since the day the clinic opened. She received her Masters in Public Health from UCLA and then worked for six years as a research assistant at UCSF Center for Reproductive Health Policy.  She completed her second Masters degree in the UCSF Family Nurse Practitioner program in 2000.  After graduation she spent 7 months working in Ecuador in both rural and urban settings.

Gralyn Jacques

Deputy Chief Financial Officer

Gralyn Jacques served as the Chief Financial Officer (CFO) for the Haight Asbury Free Clinics, Inc. for four years, serving as a Senior Manager of the organization, managing a $12M budget, overseeing contracts and grants management, compliance,  audits, and was responsible for all internal and external reporting.  Prior to this, he was an internal auditor for Old Republic Title Company where he performed tests of the company’s internal controls and also conducted special investigations relating to fraud and defalcations.  Gralyn is also a licensed real estate broker and has represented both buyers and sellers since 2002. He received a Bachelor of Science in Business Administration and Accounting from San Francisco State University. He is in the process of obtaining certifications in Wellness Coaching, Personal and Group Fitness Training, and Nutrition Education.

Jonathan Shaw, MD

Family Practice Physician

Dr. Jonathan Shaw received his medical degree from Harvard Medical School, during which he spent a research year in Guatemala. He completed his family medicine training at Oregon Health & Sciences University, and then practiced community based medicine in Hillsboro, Oregon providing maternity, infant, pediatric and adult care to a diverse patient population. Most recently he completed a research fellowship at Stanford University and the Palo Alto VA, where he gained training in evaluating health services, focusing on the interaction of psycho-social factors and health.

Jose Lopez, Ph.D.

Clinical Psychologist

Dr. Lopez received a Ph.D. in Clinical Psychology from UCLA in 1992, and completed a Postdoctoral Fellowship in Child and Adolescent Psychology at Harbor-UCLA Medical Center in 1993.  While Dr. Lopez has over 14 years experience working with a general psychiatric population, he has expertise working with the following clinical populations:  working with Spanish-speaking psychiatric populations; the assessment and treatment of Autism Spectrum Disorders and ADHD; and the assessment and treatment of children in foster care settings.  At Ravenswood Family Health Center Dr. Lopez will provide short-term counseling to individual, families, children, adults and adolescents.

Erika Simpson

Chief Operations Officer

Erika Simpson is a native of East Palo Alto. She holds a Master’s degree in Public Health, with a focus on global health, from Touro University in Vallejo, CA, and a Bachelor’s degree in Anthropology from Howard University in Washington D.C. Erika has worked with underserved populations throughout her life. She has worked as a mentor and counselor to East Palo Alto youth through the Leadership Training Academy’s summer Community Government Institute, as well as the Programs and Outreach Coordinator of the Community Breast Health Project where she worked with young women under 40 in need of breast cancer screening and diagnostic services.  In 2003 she joined RFHC as the Volunteer Program Coordinator where she established RFHC’s Volunteer Program. She then moved on to hold various roles at RFHC including Interim Clinic Manager and Health Educator. In 2006 she helped establish our second clinic site (which is now closed and part of our main health center) in the Menlo Park Belle Haven neighborhood where she was the Clinic Manager. In 2007 Erika was named the first awardee of the Geiger Gibson Emerging Leader award, presented by the School of Public Health and Health Services at George Washington University, giving national recognition for her accomplishments as an emerging leader in community health.

Teresa Devonshire

Staff Development Director

Theresa Devonshire has over 20 years of experience working in health care. She worked as a critical care nurse for 13 years before moving to the administrative side of health care. She graduated from University of San Francisco with a Master’s degree in Health Care Administration. Prior to RFHC, she worked as a Facility Administrator at DaVita Dialysis Clinic. She has also worked at Johnson & Johnson, Eli Lilly, and Align Technology.

Jaclyn Czaja, M.D.

Associate Medical Director, Pediatrics

Dr. Jaclyn Czaja completed medical training at the University of Michigan’s Medical School in 2007, followed by a three year pediatric residency at the University of Washington in Seattle. In addition to hospital duties, she worked with an inner city, and largely immigrant, population at the Harborview Children and Teen’s clinic. During her residency, she also participated in Seattle Children’s Global Health Pathway; working on a pediatric ward assessing the chronically ill children in Kisii, Kenya. Dr. Czaja is a Stanford graduate with a Bachelor of Arts degree in Human Biology.

Evelyn Ho, MPH

Quality Improvement Officer

A Bay Area native, Evelyn Ho has a long standing commitment to the provision of quality health care in the local community.  Prior to joining RFHC, Evelyn was the Managing Director for Stanford Medicine’s Cardinal Free Clinics, which operates in Menlo Park and East San Jose.  She was responsible for all aspects of regulatory and administrative oversight for the clinics.  She also led educational efforts for Stanford’s Office of Community Engagement, providing medical students with opportunities to partner with local community agencies.  Evelyn was formerly an Epidemiologist for San Mateo County and an Emerging Infectious Disease Coordinator for the California Department of Public Health.  She holds a Master of Public Health from Johns Hopkins University where she was a selected to be a HRSA Training Fellow.

Tosha Larios, DPM, MBA/HCA

Project Specialist

With more than ten years in clinical and executive medicine, Tosha Larios has extensive experience in the health care industry and military leadership. She has held numerous leadership positions prior to coming to RFHC. During her military service, she balanced her responsibilities as a provider serving patients in the Orthopedics/Podiatry clinic and her ever expanding role in executive medicine. She has served as an Education and Training Officer for hospital and clinic staff, as Director of Surgical Services, and as Director for Administration. She earned her Bachelor of Science in Nutrition/Dietetics and Bachelor of Science in Microbiology from the University of Arizona, her MBA/HCA from Northcentral University, and her DPM/DO from Des Moines University. She completed her residency training in Foot and Ankle Surgery at Phoenix VAMC and a wound care fellowship at Gallup, NM IHS prior to joining the United States Navy.

Joseph Ohens, JSD, LL.M, CHC

Compliance Officer

Joseph Ohens is a certified health care compliance and privacy professional with broad experience in developing and implementing an effective compliance program and navigating health care administrative and clinical operations through standards development, deployment, and change management. He joined RFHC from Dignity Health-St. Mary’s Medical Center in San Francisco, where as Director of Programs and a member of the hospital’s nine-member leadership team (2012-2016) he had oversight of Administrative Operations; Regulatory Compliance; Patient Relations & Satisfaction; Physician Relations, Contracts & Payments; Business Development, Strategy & Sales; Telecommunications; Security & Parking Services; and Interpreter Services.  Joseph holds a Juris Scientiae (Doctor of the Science of Law, JSD) and Legum Magister (Master of Laws, LL.M) degrees from the University of California, Berkeley School of Law, and a Legum Baccalaureus (LL.B) degree (JD equivalent) from Lagos State University, Nigeria. He is a member of the Health Section of the American Bar Association (ABA), Health Care Compliance Association (HCCA), American Society for Healthcare Risk Management (ASHRM), and the National Association Medical Staff Services. Joseph is certified in healthcare compliance (CHC), privacy compliance (CHPC), and compliance and ethics (CCEP).

Sonia Santana, MD, OB/GYN

Associate Medical Director, Women’s Health

Dr. Sonia Santana was born in Bogota, Colombia and immigrated to the United States in 1987.  She completed medical school at York College of Osteopathic Medicine in Old Westbury, NY in 2001 and finished her OB/GYN residency at Francis Hospital and Medical Center in Hartford, CT in 2005. Dr. Santana worked in private practice in the East Bay before joining RFHC in 2015. She is also a fellow of the American College of Obstetrics and Gynecology. Dr. Santana has a passion for women’s health and is results-driven in her practice. Her goal is to provide the highest quality care to effectively meet the needs of her patients. In her practice, she emphasizes educating her patients on self-management while involving their families and the community which are at the heart of RFHC’s mission. 

Christy Silva, MBA

Director of Project Planning

Christy Silva had a Bachelor’s degree in Communication Sciences when she worked in the government in El Salvador as a communication advisor. When she moved to the Bay Area she started in an entry-level position at RFHC as a Patient Service Assistant registering patients and checking their insurance. Within a few months she moved to the Billing department and then to the Finance department. She liked finance and decided to go for a Master’s in Business Administration degree, which she earned with honors. Working full-time by day and studying by night, she graduated after two and a half years with a concentration in Project Management. Within a year she was promoted to Project Planning Manager. Her expertise met a critical need to help manage two major projects – the implementation of electronic health records, and project oversight of a major Health Care Innovation grant awarded by the Center for Medicare & Medicaid Services that has intensive reporting requirements on multiple indicators related to management and health outcomes of chronic disease patients. As the Director of Project Planning she continues to work on new initiatives and improvement projects with the vision of whole person care and value based health care.

Kim Rufus

Director of Decision Support and Front Office Operation

Kim Rufus is a native of East Menlo Park, and she is passionate about serving the community that she grew up in. She began her career working at Palo Alto Medical Foundation (PAMF) in 1998 as a Patient Services Representative, and within a year became the lead in her department. In 2001 Kim transferred to the Quality & Planning department, and after five years became a System Analyst III (senior analyst). In 2008, through PAMF’s Community Health Partnership program, Kim began working with RFHC to set up their reporting systems and their databases. In 2010 Kim joined RFHC as a full-time staff. Kim oversees seven departments in RFHC. The departments consist of Decision Support, Health Information Management Systems, IT, Audio Visual, Enrollment and Eligibility, Front Desk, and Call Center. Kim is also pursuing a Bachelor of Science in Business Administration at Notre Dame de Namur University. She is expected to receive her degree in December of 2017.

Pancho Chang, JD

Strategic Business Advisor

Pancho Chang joined RFHC in June 2017 after six years as the Chief Operating Officer at Asian Americans for Community Involvement (AACI) in San Jose, CA. At AACI, he led a team that won a 2012 CMS Health Care Innovation award to reinvent AACI’s enabling services into a Patient Navigation Center, completed the implementation of electronic health records across the enterprise, implemented a New Access Point for AACI’s Federally Qualified Health Center, and obtained National Committee for Quality Assurance certification as a Patient Centered Medical Home. Prior to joining RFHC, Pancho ran the Walter S. Johnson Foundation in Menlo Park, CA; was a programmer at the S.H. Cowell and H.J. Kaiser Family Foundations, implemented and accredited Boston City Hospital’s community benefit program, served as an acting Policy Deputy at HRSA’s Bureau of Primary Care, and developed and ran a community health center in Boston Chinatown. Pancho graduated from Brandeis and Boston Universities and is a member of the California, Massachusetts, and U.S. Supreme Court bars.  He has held legal services, Pew Health Policy and Kellogg National Leadership Fellowships, and was a Fulbright Specialist in 2013 (India) and 2016 (China).  Pancho served as a Board member and Board chair at Asian Health Services in Oakland and was an examiner for the Malcolm Baldrige National Quality awards.  Currently he chairs the Audit Committee at the Cancer Prevention Institute of California.