Dr. de la Peña

Schedule Appointment

Ronald E. de la Peña, M.D., is a board-certified obstetrician-gynecologist practicing in Simi Valley to Thousand Oaks, California. He is Chairman of the Department of Obstetrics and Gynecology at Los Robles Hospital 2018 to present. His mission is to provide the highest quality care in women’s health.  He has over 32 years of medical experience. His career path was validated when he performed his first delivery over 31 years ago as a first-year medical student. That inaugural delivery inspired him to dedicate his efforts to the study and practice of women’s health. His scope of training includes obstetrics, gynecology, infertility, menopause, urinary incontinence, vaginal reconstruction, emergency care and primary care for women.

Dr. de la Peña has been practicing in Thousand Oaks since 1997, and he is on the medical staff at Los Robles Hospital, Thousand Oaks Surgical Hospital, and the Los Robles Surgicenter.  He was chairman of the LRH Department of Ob/Gyn from 2000-2004, and Chairman of the LRH Quality Care Committee in 2011. He contributes medical opinions as a contributing expert on DailyRx.com.

Hospital Affiliations

  • Los Robles Medical Center, Thousand Oaks
  • Los Robles Surgicenter, Thousand Oaks
  • Adventist Health Hospital, Simi Valley
  • Thousand Oaks Surgical Hospital

Teaching Affiliations

  • USC Keck School of Medicine Family Practice
  • CSU Dominguez Hills School of Nursing
  • Massachusetts College of Health Sciences
  • West Coast University
  • University of Cincinnati School of Nursing


  • Undergraduate, Stanford university
  • Medical school, Texas Tech University
  • Internship Obgyn, UCLA
  • Residency, University of Texas Southwestern

Schedule Appointment

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

Contact Information


2230 Lynn Road, Suite 200, Thousand Oaks, CA 91360


+1 (805) 495-1066




Mon-Wed: 8:30am-5:00pm
Thur: 8:30am-4:00pm

Copyright © Ronald E. De La Pena, MD. All rights reserved.