Dr. Toomari provides Advanced Minimally Invasive General Surgery, Gastrointestinal Surgery, and Bariatric Surgery to patients in Encino, California; Orange County, California at University of California Irvine (UCI); and throughout the Greater Los Angeles Area, using the latest State-of-the-art Technology.

As a Board Certified General Surgeon with additional Special Certification from ASMBS in Bariatric Surgery, and fellowship training in Advanced Minimally Invasive General Surgery, Bariatric Surgery and Gastrointestinal Surgery, Dr. Nojan Toomari provides the most technologically advanced care with minimal incisions and optimal recovery for his surgical patients.

Dr. Toomari's areas of interest include advanced and complex laparoscopy, hernia surgery, reflux surgery, and surgery of the stomach and colon. He is among an elite group of specialists who perform laparoscopic hiatal hernia surgery, and minimally invasive cancer operations of the GI tract - including laparoscopic colon and rectal surgery and gastric cancer surgery.

Dr. Nojan Toomari is a board certified general surgeon with special certification in bariatric surgery, and advanced training from UC Irvine in Minimally Invasive Gastrointestinal & Bariatric Surgery. There, he perfected his techniques for Advanced Laparoscopy, Endoscopy, and Minimally Invasive General Surgery, Foregut and Gastrointestinal Surgery, as part of the comprehensive gastrointestinal surgery team.

Dr. Toomari performs all general surgery operations, primary bariatric operations including laparoscopic sleeve gastrectomy, lap-band, and laparoscopic gastric bypass surgery, as well as revision weight loss surgery. He has experience managing complications from across Southern California and Northern Mexico.

Dr. Nojan Toomari completed a demanding General Surgery Residency at a very busy facility, where he performed over 2000 operations. During his residency, he received numerous awards and recognitions, served as Administrative Chief Resident, and was selected the Surgical Resident of the Year, for and unprecedented two consecutive years.

Medical School
  • Western University College of Osteopathic Medicine of the Pacific
  • Arrowhead Regional Medical Center, Colton, CA
  • Arrowhead Regional Medical Center, Colton, CA
  • University of California Irvine Medical Center, Orange, CA
  • English
  • Farsi
  • Spanish


Nojan Toomari, D.O.
18200 Ventura Boulevard
Tarzana, CA 91356
(818) 570-1845
(818) 860-1845
Robotic Surgery Program - Providence Tarzana
18321 Clark Street
Tarzana, CA 91356
(818) 881-0800


  • Bariatric Surgery (Board Certified)
  • General Surgery (Board Certified)
  • Breast Surgery
  • Colon & Rectal Surgery (Proctology)
Clinical Interests
  • Minimally Invasive Surgery
  • Gastroesophageal Reflux Disease (GERD)
  • Weight Management/ Obesity
  • Bariatric Surgery/ Gastric Bypass/ Lap Band
  • Hernia Repair
  • Colorectal Cancer
  • Stomach Cancer
  • Robotic Assisted Surgery


Insurances Accepted
  • Medi-Cal (Straight)
  • Medicare
  • Medi-Medi (Medicare-Medi-Cal)

Medical Groups

Affiliated Medical Groups
  • Facey Medical Group