Pediatrics Providers

Ensuring that our community’s children grow healthy and strong

Saika Somjee, MD, Associate Medical Director

Location: North Yuma Pediatric Clinic
Specialty: Pediatrics / Pediatric Hematology-Oncology
Med School: Seth G. S. Medical College, Mumbai, India, graduated June 1993
Residency: Louisiana State University, New Orleans, LA, completed training June 2007
Fellowship: Pediatric Hematology-Oncology, Louisiana State University, New Orleans, LA, completed training June 2005
Certifications: Board certified with the American Board of Pediatrics, 2007.
Board certified with the American Sub-Board of Pediatric Hematology-Oncology, 2009
Faculty Position: Regional Director of Medical Education for Physician Assistant program, A.T. Still University, Mesa, AZ, since August 2018.
Joined Sunset July 2007

Sharlene SY, MD

Location: North Yuma Pediatric Clinic
Specialty: Pediatrics / Pediatric Infectious Diseases
Med School: Cebu Institute of Medicine, Cebu City, Philippines, graduated May 2007
Residency: Flushing Hospital Medical Center, Flushing NY, completed training June 2019
Certification: Board Certified with the American Board of Pediatrics, 2019
Joined Sunset October 2022

Rianne Lu Yap, MD

Location: Yuma Pediatric Clinic
Specialty: Pediatrics
Med School: University of Santo Tomas Faculty of Medicine and Surgery, Manila, Philippines, graduated April 2009
Residency: Harlem Hospital Center, New York, NY, completed training May 2024
Certification: Board eligible with the American Academy of Pediatrics, 2024
Joined Sunset September 2024

Samantha A. Marquez, PA-C

Location: San Luis Pediatric Clinic
Specialty: Physician Assistant
Med School: A.T. Still University, Meza, AZ, graduated September 2020
Certification: Board certified with the National Commission on Certification of Physician Assistants, 2021.
Joined Sunset March 2021

Laura Castillo, FNP-C

Location: Somerton Clinic
Specialty: Family Nurse Practitioner
School: Grand Canyon University, Phoenix, AZ, graduated October 2023.
Certification: Board certified with the American Academy of Nurse Practitioners, 2023
Joined Sunset February 2024