Ronald Cornelsen, MD, FAAP

  • Pediatrics
  • English
Board Certifications :
  • Diplomate, American Board of Pediatrics

Groups & Affiliations:
  • Hoag Affiliated Physicians
  • Hoag Medical Group
Phone: (714) 477-8001

About Ronald Cornelsen, MD, FAAP

Growing up in a small farm community in Kansas, Dr. Cornelsen was inspired by a local community physician who demonstrated compassion, dedication, and trust. It was this individual that served as Dr. Cornelsen’s inspiration to pursue a career in medicine and to serve others.

Dr. Cornelsen has always enjoyed children and specifically, he appreciates their energy, liveliness, and the fact that they keep him on his toes. Therefore, his path to becoming a pediatrician was no surprise. Over his impressive career, Dr. Cornelsen has had the privilege of treating multiple generations of the same family and providing excellent patient care.

According to Dr. Cornelsen, the child always comes first and he appreciates the conversations he has with his patients. As he states it best, “I always focus on the child and that allows me the opportunity to truly understand and appreciate them. I place a focus on preventative care as I believe it is important to guide children toward making healthy choices early in life.”

Dr. Cornelsen earned his medical degree from Loma Linda University and completed his residency at White Memorial Hospital and Los Angeles County Hospital. Additionally, he served as a physician in the U.S. Army.

During his time away from the office, Dr. Cornelsen enjoys spending time with his wife, Denise, children, and grandchildren, as well as skiing and flying.

Insurances Accepted / Provider ID Numbers

Aetna: *398384
Blue Cross: *YNL139
Blue Shield: 00A202191
CIGNA: 3228232017
CIGNA Select: 3228232019
Health Net: 3620503271
Health Net Senior: n/a
SCAN: n/a
United Healthcare:*0279630083

*Provider ID is the same for both HMO and Medicare Advantage Plans