Our Pediatric Experts

Dr. Jenna Timboe, MD, is a board-certified pediatrician at Southern Orange County Pediatric Associates in Ladera Ranch, California, specializing in the health and well-being of children. Practicing at SOCPA since 2017, she provides comprehensive, family-centered care for infants, children and teens. Dr. Timboe also visits newborns at Mission Hospital, Saddleback and Hoag Irvine.

Dr. Timboe is particularly passionate about FPIES and fussy/colicky babies, due to her own experience as a parent. As a member of the Rady Children’s Health Primary Care Network, Dr. Timboe is part of a nationally recognized pediatric health system to deliver coordinated care and streamline access to specialty care and additional services when necessary.

Outside the office, she enjoys the outdoors with her family – her husband, Andy, who is a firefighter, and their three children. They enjoy camping, paddleboarding, hiking, and being outside as often as possible.

“It is a privilege to care for pediatric patients and their families. I recognize this honor even more so after becoming a mother and understanding the trust you must place in a physician that is caring for your child. I enjoy following patients as they grow and developing a relationship with both the patient and their family.”

Dr. Margaret van Blerk, MD, MPH, FAAP, is a board-certified pediatrician at Southern Orange County Pediatric Associates in San Clemente, California, specializing in the health and well-being of children. Practicing at SOCPA since 2008, she provides comprehensive, family-centered care for infants, children and teens. Dr. van Blerk is particularly passionate about childhood obesity prevention, asthma education, and promoting healthy choices for children and families. As a member of the Rady Children’s Health Primary Care Network, she is part of a nationally recognized pediatric health system to deliver coordinated care and streamline access to specialty care and additional services when necessary. Dr. van Blerk served as a Commander in the U.S. Navy, overseeing the Pediatric Impatient Division as the Naval Medical Center in San Diego. There, she established a clinic dedicated to healthy choices in obese children, developed an asthma education program for children and families, and served as Education Coordinator for the Naval Center’s Pediatric Transport Team. She was voted “Most Compassionate Resident of the Year” during her residency.

Dr. Shruti Vora, MD, is a pediatrician at Southern Orange County Pediatric Associates in both Rancho Santa Margarita and Irvine, California, specializing in the health and well-being of children. Practicing at SOCPA since 2023, she provides comprehensive, family-centered care for infants, children and teens. As a member of the Rady Children’s Health Primary Care Network, she is part of a nationally recognized pediatric health system to deliver coordinated care and streamline access to specialty care and additional services when necessary. Dr. Vora also speaks Vietnamese, making her care accessible to a broader patient community.

Dr. Katherine Williamson, MD, is a board-certified pediatrician at Southern Orange County Pediatric Associates, specializing in preventive health and wellness of all children. Practicing at SOCPA since 2012, she provides comprehensive, family-centered care for infants, children and teens.

Dr. Williamson is passionate about preventive care and empowering children and teens to learn about their bodies and how to take care of them lifelong. As an athlete, she loves talking with kids about how healthy minds and healthy bodies start with nutrition, hydration, sleep, and exercise.

As a member of the Rady Children’s Health Primary Care Network, she is part of a nationally recognized pediatric health system to deliver coordinated care and streamline access to specialty care and additional services when necessary.

Dr. Williamson is an active member of the American Academy of Pediatrics (AAP) and California Medical Association (CMA). She was president of the AAP Orange County chapter during the pandemic helping to lead pediatricians through caring for their patients, and partnered with schools, hospitals, and the public health department. She received the Pediatrician of the Year Award in 2022, and Young Physician of the Year Award in 2016 for her services to the community.

“I strive to make every child and parent who walks in my door feel heard and valued. I aim to empower kids to understand, be proud of, and take care of their bodies.”

Outside the office, Dr. Williamson loves to unplug and be outdoors and moving as much as possible. Rock climbing, running, cycling, and swimming are her favorite activities.

Dr. Rosette Yson-Zaragoza, MD, FAAP, is a board-certified pediatrician at Southern Orange County Pediatric Associates in Rancho Santa Margarita, California, specializing in the health and well-being of children. Practicing at SOCPA since 2005, she provides comprehensive, family-centered care for infants, children and teens. Dr. Yson-Zaragoza also sees patients at CHOC Mission Hospital. As a member of the Rady Children’s Health Primary Care Network, she is part of a nationally recognized pediatric health system to deliver coordinated care and streamline access to specialty care and additional services when necessary. Dr. Yson-Zaragoza also speaks Spanish, making her care accessible to a broader patient community.