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Diana Mokaya, MD

Family Medicine Provider

Dr. Diana Mokaya is a Family Medicine provider. Dr. Mokaya received her undergraduate degree from Yale University and her medical degree from the University of Pittsburgh School of Medicine. She completed her family medicine training at O’Connor Hospital in 2016, which included training in maternity, infant, pediatric and adult care to a diverse patient population.  She is committed to caring for underserved populations through systems improvement and governmental advocacy. Her practice is open to all patients, including newborns, children, adults and pregnant patients.  Prenatal care and women’s health are part of the services she provides for her patients.
When not working, Dr. Mokaya enjoys any kind of craft, including knitting, crocheting, spinning and weaving. She is an avid reader, and her favorites are sci-fi and fantasy novels.

Daisy Saad, MD


Dr. Daisy Gracia Saad graduated with a Bachelor of Science in Biology with minors in both Chemistry and Spanish from the University of Texas-Pan American. She received her medical degree from Baylor College of Medicine in Houston, Texas and then completed her pediatric residency at the University of Texas Southwestern/Children’s Medical Center in Dallas, Texas. Dr. Saad’s personal experience of growing up in a socio-economically disadvantaged community has driven her passion to provide high quality primary care to underserved children and families.

Raymond Perez, MD

Family Medicine Provider

Dr. Raymond Perez completed his medical training at Mt. Sinai School of Medicine in 2008 and his Family Medicine Residency at the University of Virginia.  He received his undergraduate education at Cal Poly San Luis Obispo, graduating in 2001 with a BS in Biology. Dr. Perez is interested in international health and has worked in Senegal, Chile, Mexico, and New Zealand.

Reshma Thadani, MD, MPH


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.

Sharon DiPierro, MD


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.

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.