Cardiologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Chiropractor providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dentist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dermatologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Family Physician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
OB-GYN providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Ophthalmologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Orthopedic Surgeon providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Pediatrician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Physical Therapist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Podiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Psychiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dr. Yvonne D'Sylva, MD, is a deeply respected pediatrician in Corona, California, with a career that spans over 50 years. She is widely recognized for her commitment to the health and wellbeing of children, from infancy through adolescence. Graduating from Dow Medical College in Karachi in 1971, Dr. D'Sylva has dedicated her professional life to pediatrics, establishing herself as a steadfast figure in the medical community. She is fluent in Hindi and Urdu. Her approach to pediatric care is marked by her ability to combine medical expertise with a compassionate bedside manner, focusing on both preventative health measures and treatment of acute conditions.
Known not only for her diagnostic acumen but also for her genuine concern for the emotional and social development of children, Dr. D'Sylva has left an indelible mark on her community. Families trust her to provide a holistic approach to care, ensuring that the child’s entire wellbeing is considered, not just the immediate symptoms. In a world where healthcare often feels impersonal, Dr. D'Sylva brings warmth and personal connection to every consultation, making her practice a beloved pillar in the Corona area.
“Dr. D’Sylva has such a wonderful bed side manner and cares so much for my children. She goes above and beyond. She has a soft spot for adopted or fostered children and always is very informative with her treatment plan. God bless you Dr. D’Sylva..”
Steven Sun, MD, is a board-certified pediatrician at American Pediatrics in Irvine and Tustin, California. Dr. Sun strives to deliver quality care for your little ones and help ensure they stay healthy and happy throughout their childhood and adolescence.
Under his care, you can rest assured your child will receive well-rounded care. Dr. Sun uses a holistic approach, meaning he focuses on more than just their symptoms, but their overall well-being. He focuses on helping your child lead a healthy lifestyle so that they can grow into outstanding human beings.
Dr. Sun is one of the newest members of the practice, becoming a part of the team in 2022. Prior to joining American Pediatrics, he worked at Hoag Medical Group and Mayflower Medical Group, serving young patients during all stages of their youth.
He graduated from the University of Michigan Medical School before pursuing his pediatric residency at Loma Linda University Children’s Hospital. Dr. Sun is certified by the American Board of Pediatrics.
Dr. Sun currently resides in Irvine, and he provides newborn and adolescent care skillfully in both Mandarin and English.
Dr. Richard Chang is a board-certified pediatrician treating patients in Fontana and Eastvale, California. He is currently welcoming new patients at Sierra Pacific Pediatric Associates.
Dr. Chang grew up in North Carolina. He earned his bachelor’s degree from the University of North Carolina at Chapel Hill, and he received his MD in 1997 from the Wake Forest School of Medicine. He completed his residency in pediatrics at the University of Texas-Houston medical school in 2000.
Dr. Chang practiced in the state of Texas for five years before moving to California, where he opened Sierra Pacific Pediatric Associates. In addition to being board-certified in pediatrics, Dr. Chang is a Fellow of the American Academy of Pediatrics. As a testament to his medical knowledge, he served as Chair of Pediatrics at San Antonio Regional Hospital and continues on the Pediatrics Committee.
Dr. Chang is a compassionate, experienced physician who always puts the needs of his patients first. If you’re interested in making an appointment for your child with Dr. Chang, please contact Sierra Pacific Pediatric Associates today.
Anuradha Setlur, MD, FAAP, is a board-certified pediatrician and pediatric critical care physician dedicated to delivering expert, family-centered care to children experiencing serious or life-threatening medical conditions. She brings a compassionate, thoughtful approach to every patient she treats at South Counties Pediatric Critical Care Medical Group, with offices in Fountain Valley, West Covina, and Long Beach, California.
Dr. Setlur earned her medical degree from St. George’s University and completed her pediatric residency at New York Medical College. She then completed a fellowship in pediatric critical care at Nemours Children’s Hospital, Thomas Jefferson University in Wilmington, Delaware, gaining specialized experience in managing complex pediatric illnesses and intensive care treatment.
As a Fellow of the American Academy of Pediatrics (FAAP), Dr. Setlur remains committed to ongoing education and best practices in pediatric medicine. Her clinical expertise spans the full spectrum of pediatric critical care, and she works closely with multidisciplinary teams to deliver coordinated care tailored to each child’s unique needs.
Dr. Setlur is known for her calm presence, medical insight, and dedication to both patients and their families. She is proud to serve children throughout Los Angeles and Orange counties as part of the expert team at South Counties Pediatric Critical Care Medical Group.
Practice
South Counties Pediatric Critical Care Medical Group
Alireza Fathi, MD, FAAP, is a board-certified pediatrician and pediatric critical care physician at South Counties Pediatric Critical Care Medical Group, with offices in Fountain Valley, West Covina, and Long Beach, California. Dr. Fathi has extensive experience caring for critically ill children. He is committed to providing expert, evidence-based care to young patients and their families throughout Los Angeles and Orange counties.
Dr. Fathi earned his Doctor of Medicine degree from St. George’s University School of Medicine and graduated cum laude with a Bachelor of Science from the University of California, Irvine. He completed his pediatric residency at Miami Children’s Hospital and went on to complete a fellowship in pediatric critical care at San Diego Children’s Hospital.
Dr. Fathi currently serves as Vice Chief of Staff and Associate Director of the Pediatric Intensive Care Unit (PICU) at Miller Children’s Hospital. He also contributes to medical education as an Assistant Clinical Professor and remains dedicated to training the next generation of pediatric healthcare providers.
His clinical interests include pulmonary hypertension in children with congenital heart disease and the use of hypertonic saline in treating pediatric head trauma. Dr. Fathi’s approach to care emphasizes precision, compassion, and ongoing communication with families and care teams throughout a child’s hospital stay.
He is a Fellow of the American Academy of Pediatrics (FAAP) and is known for his leadership, teaching, and commitment to improving outcomes in pediatric critical care.
Dr. Fathi proudly serves patients at South Counties Pediatric Critical Care Medical Group, where he brings advanced expertise and deep compassion to every case.
Practice
South Counties Pediatric Critical Care Medical Group
Zacharia Reda, MD, FAAP, FCCP, is a board-certified pediatrician with additional certifications in pediatric critical care medicine and hospitalist medicine. He provides expert care to patients at South Counties Pediatric Critical Care Medical Group, with offices in Fountain Valley, West Covina, and Long Beach, California.
With over 35 years of experience serving families throughout Los Angeles and Orange counties, Dr. Reda is known for his deep commitment to high-quality, compassionate care for critically ill children.
Dr. Reda completed his pediatric residency at LAC/USC Medical Center and a prestigious pediatric critical care fellowship at UCLA. He has held leadership roles at several prominent hospitals, including serving as Director of the Pediatric Intensive Care Unit (PICU) at UCI—Fountain Valley Hospital and Associate Director of the PICUs at Miller Children’s Hospital, St. Vincent Medical Center, and Valley Presbyterian Hospital.
Respected by his peers, Dr. Reda has been consistently recognized as one of the best pediatric critical care doctors in Orange County, California, and across the nation. He has been named among the “Best Doctors in America” for Pediatric Critical Care for 16 consecutive years.
Dr. Reda has a special clinical interest in ventilator management, pediatric pulmonary medicine, and asthma care. He is passionate about advancing the field through education and has trained medical students, residents, and fellows as an Associate Clinical Professor at UCI and through teaching roles at UCLA.
He is a Fellow of the American Academy of Pediatrics (FAAP), the American College of Chest Physicians (FCCP), and a member of the European Society of Intensive Care Medicine.
Dr. Reda brings unmatched experience and dedication to every patient he serves at South Counties Pediatric Critical Care Medical Group.
Practice
South Counties Pediatric Critical Care Medical Group
Kyu Seo Kim, MD, is a board-certified pediatrician and pediatric critical care physician with additional expertise in clinical informatics. He is dedicated to delivering precise, data-informed, and compassionate care to critically ill infants, children, and adolescents at South Counties Pediatric Critical Care Medical Group, with offices in Fountain Valley, West Covina, and Long Beach, California.
Dr. Kim earned his undergraduate degree in Chemistry from Duke University and completed his medical education at Emory University School of Medicine. He went on to complete both his pediatric residency and pediatric critical care fellowship at Rady Children’s Hospital, University of California San Diego, where he gained comprehensive experience in managing complex and life-threatening pediatric conditions.
In addition to his clinical training, Dr. Kim completed a fellowship in Clinical Informatics at Oregon Health & Science University. His background in informatics enhances his ability to integrate advanced technologies and evidence-based data into patient care, improving outcomes and optimizing communication across healthcare teams. Dr. Kim is known for his calm, methodical approach and his commitment to patient safety and quality improvement. He collaborates closely with families, hospital staff, and referring physicians to ensure every child receives individualized, coordinated care.
At South Counties Pediatric Critical Care Medical Group, Dr. Kim applies his dual expertise in critical care and informatics to provide advanced, responsive care for hospitalized children and their families.
Practice
South Counties Pediatric Critical Care Medical Group
Princella Olalo, MD, FAAP, is a board-certified pediatrician and pediatric critical care physician with specialized expertise in the care of critically ill and cardiac pediatric patients. She is passionate about providing high-quality, evidence-based care to children and families at South Counties Pediatric Critical Care Medical Group, with offices in Fountain Valley, West Covina, and Long Beach, California.
Dr. Olalo earned her medical degree from Michigan State University and completed her pediatric residency at Harbor-UCLA Medical Center, where she also served an additional year as Chief Resident. She went on to complete her pediatric critical care fellowship at UC Davis, gaining extensive training in advanced life support, respiratory management, and multidisciplinary intensive care.
Dr. Olalo previously served at Stanford Children’s Hospital in the Cardiovascular Intensive Care Unit (CVICU), where she cared for infants and children with congenital heart disease and other complex cardiac conditions. Her experience in this highly specialized environment enhances her ability to provide expert care for critically ill children requiring cardiac support and monitoring.
A Fellow of the American Academy of Pediatrics (FAAP), Dr. Olalo is known for her thoughtful bedside manner, clinical precision, and dedication to family-centered care. She works closely with families, specialists, and primary care providers to ensure clear communication and continuity of care throughout a child’s hospitalization.
At South Counties Pediatric Critical Care Medical Group, Dr. Olalo brings compassion, leadership, and deep clinical expertise to every child she treats across Los Angeles and Orange counties.
Practice
South Counties Pediatric Critical Care Medical Group
Erica Chen, MD, is a board-certified allergy and immunology specialist practicing at the Allergy and Asthma Specialist Doctors, Inc. location in West Covina, California. Her practice is centered around the treatment of allergic diseases, including nasal allergies and asthma.
Dr. Chen earned her medical degree from the Keck School of Medicine at the University of Southern California. Subsequently, she completed her combined internal medicine pediatric residency and allergy and immunology fellowship training at the Los Angeles County Hospital at the University of Southern California.
Dr. Chen is board certified by the American Board of Allergy and Immunology. She has contributed to multiple peer-reviewed scientific presentations and publications. She also holds numerous professional society memberships, including the American Academy of Allergy Asthma and Immunology and the American College of Allergy, Asthma and Immunology.
Dr. Chen is currently accepting new patients and looks forward to welcoming them to Allergy and Asthma Specialist Doctors, Inc.
Grace Moussa, M.D., completed her medical degree at Kuwait University School of Medicine. She took her training at St. Mary's Hospital, University of Connecticut, Yale University, and Columbia University. Dr. Moussa has been practicing since 1994 as a physician. She speaks English, Arabic, French, and medical Spanish languages.
Anuradha Setlur, MD, FAAP, is a board-certified pediatrician and pediatric critical care physician dedicated to delivering expert, family-centered care to children experiencing serious or life-threatening medical conditions. She brings a compassionate, thoughtful approach to every patient she treats at South Counties Pediatric Critical Care Medical Group, with offices in Fountain Valley, West Covina, and Long Beach, California.
Dr. Setlur earned her medical degree from St. George’s University and completed her pediatric residency at New York Medical College. She then completed a fellowship in pediatric critical care at Nemours Children’s Hospital, Thomas Jefferson University in Wilmington, Delaware, gaining specialized experience in managing complex pediatric illnesses and intensive care treatment.
As a Fellow of the American Academy of Pediatrics (FAAP), Dr. Setlur remains committed to ongoing education and best practices in pediatric medicine. Her clinical expertise spans the full spectrum of pediatric critical care, and she works closely with multidisciplinary teams to deliver coordinated care tailored to each child’s unique needs.
Dr. Setlur is known for her calm presence, medical insight, and dedication to both patients and their families. She is proud to serve children throughout Los Angeles and Orange counties as part of the expert team at South Counties Pediatric Critical Care Medical Group.
Practice
South Counties Pediatric Critical Care Medical Group
Alireza Fathi, MD, FAAP, is a board-certified pediatrician and pediatric critical care physician at South Counties Pediatric Critical Care Medical Group, with offices in Fountain Valley, West Covina, and Long Beach, California. Dr. Fathi has extensive experience caring for critically ill children. He is committed to providing expert, evidence-based care to young patients and their families throughout Los Angeles and Orange counties.
Dr. Fathi earned his Doctor of Medicine degree from St. George’s University School of Medicine and graduated cum laude with a Bachelor of Science from the University of California, Irvine. He completed his pediatric residency at Miami Children’s Hospital and went on to complete a fellowship in pediatric critical care at San Diego Children’s Hospital.
Dr. Fathi currently serves as Vice Chief of Staff and Associate Director of the Pediatric Intensive Care Unit (PICU) at Miller Children’s Hospital. He also contributes to medical education as an Assistant Clinical Professor and remains dedicated to training the next generation of pediatric healthcare providers.
His clinical interests include pulmonary hypertension in children with congenital heart disease and the use of hypertonic saline in treating pediatric head trauma. Dr. Fathi’s approach to care emphasizes precision, compassion, and ongoing communication with families and care teams throughout a child’s hospital stay.
He is a Fellow of the American Academy of Pediatrics (FAAP) and is known for his leadership, teaching, and commitment to improving outcomes in pediatric critical care.
Dr. Fathi proudly serves patients at South Counties Pediatric Critical Care Medical Group, where he brings advanced expertise and deep compassion to every case.
Practice
South Counties Pediatric Critical Care Medical Group
Princella Olalo, MD, FAAP, is a board-certified pediatrician and pediatric critical care physician with specialized expertise in the care of critically ill and cardiac pediatric patients. She is passionate about providing high-quality, evidence-based care to children and families at South Counties Pediatric Critical Care Medical Group, with offices in Fountain Valley, West Covina, and Long Beach, California.
Dr. Olalo earned her medical degree from Michigan State University and completed her pediatric residency at Harbor-UCLA Medical Center, where she also served an additional year as Chief Resident. She went on to complete her pediatric critical care fellowship at UC Davis, gaining extensive training in advanced life support, respiratory management, and multidisciplinary intensive care.
Dr. Olalo previously served at Stanford Children’s Hospital in the Cardiovascular Intensive Care Unit (CVICU), where she cared for infants and children with congenital heart disease and other complex cardiac conditions. Her experience in this highly specialized environment enhances her ability to provide expert care for critically ill children requiring cardiac support and monitoring.
A Fellow of the American Academy of Pediatrics (FAAP), Dr. Olalo is known for her thoughtful bedside manner, clinical precision, and dedication to family-centered care. She works closely with families, specialists, and primary care providers to ensure clear communication and continuity of care throughout a child’s hospitalization.
At South Counties Pediatric Critical Care Medical Group, Dr. Olalo brings compassion, leadership, and deep clinical expertise to every child she treats across Los Angeles and Orange counties.
Practice
South Counties Pediatric Critical Care Medical Group
Kyu Seo Kim, MD, is a board-certified pediatrician and pediatric critical care physician with additional expertise in clinical informatics. He is dedicated to delivering precise, data-informed, and compassionate care to critically ill infants, children, and adolescents at South Counties Pediatric Critical Care Medical Group, with offices in Fountain Valley, West Covina, and Long Beach, California.
Dr. Kim earned his undergraduate degree in Chemistry from Duke University and completed his medical education at Emory University School of Medicine. He went on to complete both his pediatric residency and pediatric critical care fellowship at Rady Children’s Hospital, University of California San Diego, where he gained comprehensive experience in managing complex and life-threatening pediatric conditions.
In addition to his clinical training, Dr. Kim completed a fellowship in Clinical Informatics at Oregon Health & Science University. His background in informatics enhances his ability to integrate advanced technologies and evidence-based data into patient care, improving outcomes and optimizing communication across healthcare teams. Dr. Kim is known for his calm, methodical approach and his commitment to patient safety and quality improvement. He collaborates closely with families, hospital staff, and referring physicians to ensure every child receives individualized, coordinated care.
At South Counties Pediatric Critical Care Medical Group, Dr. Kim applies his dual expertise in critical care and informatics to provide advanced, responsive care for hospitalized children and their families.
Practice
South Counties Pediatric Critical Care Medical Group
Zacharia Reda, MD, FAAP, FCCP, is a board-certified pediatrician with additional certifications in pediatric critical care medicine and hospitalist medicine. He provides expert care to patients at South Counties Pediatric Critical Care Medical Group, with offices in Fountain Valley, West Covina, and Long Beach, California.
With over 35 years of experience serving families throughout Los Angeles and Orange counties, Dr. Reda is known for his deep commitment to high-quality, compassionate care for critically ill children.
Dr. Reda completed his pediatric residency at LAC/USC Medical Center and a prestigious pediatric critical care fellowship at UCLA. He has held leadership roles at several prominent hospitals, including serving as Director of the Pediatric Intensive Care Unit (PICU) at UCI—Fountain Valley Hospital and Associate Director of the PICUs at Miller Children’s Hospital, St. Vincent Medical Center, and Valley Presbyterian Hospital.
Respected by his peers, Dr. Reda has been consistently recognized as one of the best pediatric critical care doctors in Orange County, California, and across the nation. He has been named among the “Best Doctors in America” for Pediatric Critical Care for 16 consecutive years.
Dr. Reda has a special clinical interest in ventilator management, pediatric pulmonary medicine, and asthma care. He is passionate about advancing the field through education and has trained medical students, residents, and fellows as an Associate Clinical Professor at UCI and through teaching roles at UCLA.
He is a Fellow of the American Academy of Pediatrics (FAAP), the American College of Chest Physicians (FCCP), and a member of the European Society of Intensive Care Medicine.
Dr. Reda brings unmatched experience and dedication to every patient he serves at South Counties Pediatric Critical Care Medical Group.
Practice
South Counties Pediatric Critical Care Medical Group
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