Meet The Team


Dr. Robert Tran

Pediatrics and Pediatric Gastroenterology/Nutrition

Board Certifications: Pediatrics and Pediatric Gastroenterology/Nutrition

Education/Training
Professional Education: Tufts University School of Medicine/ Boston, MA
Residency: University of California, Davis Medical Center
Fellowship: Mattel UCLA Children’s Hospital: Los Angeles, CA

Associations: North American Society of Pediatric Gastroenterology, Hepatology, and Nutrition; American Academy of Pediatrics; Crohn's and Colitis Foundation of America

Special Interests: Inflammatory bowel disease, gastroesophageal reflux disease, liver disease, obesity and pediatric nutrition

Other Language(s) Spoken: Vietnamese


Dr. Barry Steinmetz

Pediatrics and Pediatric Gastroenterology/Nutrition

Board Certifications: Pediatrics and Pediatric Gastroenterology/Nutrition

Education/Training
Professional Education: Baylor College of Medicine, Houston, TX
Residency: Baylor College of Medicine/Texas Children’s Hospital Houston, TX
Fellowship: Mattel UCLA Children’s Hospital: Los Angeles, CA

Associations: American College of Gastroenterology;
North American Society of Pediatric Gastroenterology, Hepatology, & Nutrition
American Gastroenterology Association;  American Academy of Pediatrics

Special Interests: Inflammatory bowel disease, hepatology, gastroesophageal reflux disease, and childhood obesity

Other Language(s) Spoken: Spanish


Dr. Mini Mehra

Pediatrics and Pediatric Gastroenterology/Nutrition

Board Certifications: Pediatrics and Pediatric Gastroenterology/Nutrition

Education/Training
Professional Education: University of Texas Health Science Center, Medical School: San Antonio , TX
Residency: UCLA Medical School: Los Angeles, CA
Fellowship: Mattel UCLA Children’s Hospital: Los Angeles, CA

Associations: North American Society of Pediatric Gastroenterology, Hepatology, and Nutrition
American Academy of Pediatrics

Special Interests: Hepatology, eosinophilic esophagitis, gastroesophageal reflux disease, and inflammatory bowel disease.

Other Language(s) Spoken: Hindi and Spanish



Dr. Anjuli Kumar

Pediatrics and Pediatric Gastroenterology/Nutrition

Board Certifications: Pediatrics and Pediatric Gastroenterology/Nutrition

Education/Training
Professional Education: New York Medical College: Valhalla, NY
Residency: Childrens Hospital Orange County: Orange, CA
Fellowship: Mattel UCLA Children’s Hospital: Los Angeles, CA

Associations: North American Society of Pediatric Gastroenterology, Hepatology, and Nutrition;                    American Academy of Pediatrics; American Association for the Study of Liver Diseases


Special Interests: Hepatology, intestinal disorders, and inflammatory bowel disease.

Other Language(s) Spoken: Spanish


Maria Castillo

Office Coordinator

Maria brings over 15 years of experience across various specialties, including family practice, oncology, pediatric development, and gastroenterology. Her career has been defined by a dedication to patient-centered care and a deep understanding of both the administrative and clinical sides of medical practice.

With a focus on creating a positive patient experience, Maria ensures that every step of the process—whether scheduling, navigating insurance, or interacting with providers—runs smoothly and efficiently. She thrives on building trust with patients and working collaboratively with healthcare teams to deliver exceptional care.

Maria now plays a key role in coordinating care between the GI team and referring providers, helping patients manage appointments, financial planning, and other essential needs. Her goal is to make each patient’s journey as seamless as possible.

Outside of her professional life, Maria enjoys spending time with her two young children and husband, enjoying family outings, and cherishing moments with family.

For direct consult and referrals, Maria may be contacted directly anytime via cell: 949) 508–8141, fax: 866) 447-2930, or via email pgasc.castillo@gmail.com