Pediatric Care

Pediatric Care in Lake County

Having a pediatrician you trust is invaluable


Help your child become the best they can be by having a caring pediatrician to watch over your their development.

In addition to administering vaccines and performing regular checkups, our pediatric team monitors your child for healthy growth and development. Just like you, we are committed to making sure your child has the nurturing care they need.

During your child’s visit, our team will ask questions about your child’s development. These questions help us understand if your child is on track with their milestones. We encourage you to share any concerns you might have about your child’s growth and health. Our role is to ease your mind and, if needed, to connect you with the resources needed to help your child as early as possible.

Regular care and early intervention help kids have the best outcomes and to live life to the fullest.

Make your appointment today in Lakeport by calling (707) 263-4631 or in Clearlake by calling (707) 995-4530.

Our Services


• Newborn Check ups
• Annual check-ups
• Immunizations
• Sports physicals
• Sick visits
• All other health concerns

Our Locations

Adventist Health Clear Lake Medical Office – Clearlake
15230 Lakeshore Drive | Clearlake, CA 95422
Hours: M-F 9AM-5PM
Phone: (707) 995-4530

Adventist Health Medical Office - Lakeport
487 S. Main St. | Lakeport, CA 95453
Hours: M-F 9AM-5PM
Phone: (707) 263-4631

Our Team

Luis A. Diaz, MD

Dr. Luis DiazDr. Luis Diaz is an experienced pediatrician who is loved by both his patients and their parents and grandparents. Dr. Diaz is bilingual in English and Spanish. He is board-certified by the American Board of Pediatrics and completed residency and fellowship at the University of Kansas Medical Center in Kansas City.



Barbara Gardner, MD

Dr GardnerDr. Barbara Gardner is an experienced pediatrician, who in addition to providing expert medical care, has a special passion for childhood literacy initiatives. She is board-certified by the American Board of Pediatrics. She is a graduate of New York University School of Medicine and completed an internship and residency at the Yale School of Medicine.


Elsa M. Valdivia, MD

Pediatrician Elsa ValdiviaDr. Valdivia is a board-certified pediatrician with nearly two decades of experience helping growing children stay healthy. After completing medical school in Peru, Dr. Valdivia completed an internship and residency in pediatrics at the University of Kansas Medical Center in Kansas City.


Liz Osborne, FNP
Liz Osborne FNP PediatricsLiz Osborne, FNP, has a love for helping growing kids. She is known for her kind manner that makes her perfectly suited to care for the smallest patients. Liz completed her family nurse practitioner studies at Sonoma State University and is credentialed by the American Nurses Credentialing Center.

Jamie Bhatia, PNP

Jamie Bhatia, PNP


Eunice Mentges, FNP