Child Abuse, Violence Intervention Program (VIP)

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Catherine A. DeRidder, M.D.

Current position and specialty:

Medical Director of Violence Intervention Program

Assistant Professor of Clinical Pediatrics, Keck School of Medicine of USC

Hometown: Naperville, IL
Undergraduate: University of Illinois, Urbana-Champaign
Medical School: Indiana University, Indianapolis, IN
Residency: Riley Hospital for Children, Indianapolis, IN
Fellowship: Harbor-UCLA Medical Center, Torrance, CA
What does working at LAC+USC mean to you? We strive to do our best to care for the most vulnerable children in Los Angeles.


Haylee Turner, D.O.

Current Position:

  • Pediatrician at the LAC+ USC HUB/Violence Intervention Program, providing medical care for children within the LA County foster and dependency system.  I also work in the HUB's Fetal Alcohol Spectrum Disorders Clinic, providing diagnoses and referrals for appropriate services for children affected by prenatal alcohol exposure. 


Medical School:  Touro University Nevada
Residency:  LAC+USC

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Astrid Heppenstall Heger, M.D.

Current Position:

Founder and Executive Director of the Violence Intervention Program (VIP)

Executive Director for the Violence Intervention Program Community Mental Health Center

Professor of Clinical Pediatrics, Emeritus Professor at USC

  • Medical School: Keck School of Medicine of USC
    Residency: LAC+USC Pediatrics


Katie Santohigashi, M.D.

Current position: Primary care pediatrics for youth in the LA county foster system
Medical School: USC Keck School of Medicine
Residency: LAC+USC, Pediatric chief resident


Supriya Sharma, M.D.

Hometown: Pleasanton, CA 
Undergraduate: University of California, Santa Barbara 
Medical School: St. George's University School of Medicine, Grenada 
Residency: University Hospitals Case Western Reserve - Rainbow Babies & Children's Hospital, Cleveland 
Fellowship: Pediatric Emergency Medicine & Child Abuse Pediatrics - Harbor-UCLA Medical Center, Torrance, CA
What does working at LAGMC/USC mean to you? It is a privilege that get I get to pursue my passion of serving the county's most vulnerable patients and work towards their healing in both the emergency department and VIP Clinic.