Updated: September 9, 2026
Dr. Sepehr Lalezari

Dr. Sepehr Lalezari

Dr. Sepehr Lalezari is a double board-certified bariatric and minimally invasive surgeon in Los Angeles offering gastric sleeve, gastric bypass, SADI-S, revisional bariatric surgery and medical weight loss
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Dr. Sepehr Lalezari, MD, FACS is a bariatric, minimally invasive, and general surgeon and founder of Lalezari Surgical, serving patients in Los Angeles and Long Beach, California.

Dr. Lalezari is board certified in General Surgery by the American Board of Surgery and in Obesity Medicine by the American Board of Obesity Medicine. He is also a Fellow of the American College of Surgeons (FACS).

Dr. Lalezari earned his undergraduate degree in Neuroscience from UCLA, graduating magna cum laude and two years early. He received his medical degree from St. George’s University School of Medicine in 2011 and completed his general surgery residency at Jewish Hospital of Cincinnati, where he served as Chief Resident. He subsequently completed fellowship training in bariatric and minimally invasive surgery at Johns Hopkins Medicine in Baltimore.

Bariatric Procedures

Dr. Lalezari offers a comprehensive range of surgical and minimally invasive weight-loss procedures, including:

  • Gastric Sleeve / Sleeve Gastrectomy
  • Roux-en-Y Gastric Bypass
  • Mini Gastric Bypass / One-Anastomosis Gastric Bypass
  • SADI-S
  • Duodenal Switch
  • Adjustable Gastric Band / Lap-Band
  • Revisional Bariatric Surgery
  • Lap-Band removal and conversion
  • Sleeve and gastric bypass revisions

He also provides non-surgical and endoscopic weight-loss treatments, including Endoscopic Sleeve Gastroplasty (ESG), gastric balloon, Transoral Outlet Reduction (TORe), and medical weight management. The practice also offers semaglutide and tirzepatide-based medical weight-loss care when clinically appropriate.

Additional Surgical Services

In addition to bariatric surgery, Dr. Lalezari performs minimally invasive general surgery, including hernia surgery, reflux and GERD surgery, colorectal procedures, and treatment for gastroparesis. His practice incorporates laparoscopic, robotic, endoscopic, and other minimally invasive surgical techniques.

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Credentials

American Board of Surgery: General Surgery
American Board of Obesity Medicine: Obesity Medicine
Fellow: American College of Surgeons (FACS)
Bariatric & Minimally Invasive Surgery Fellowship: Johns Hopkins Medicine

General Surgery Residency: Jewish Hospital of Cincinnati
Medical School: St. George’s University School of Medicine
Undergraduate: UCLA, B.S. Neuroscience
NPI: 1417238205
California Medical License: A141683

Hospital Affiliations

Current sources identify affiliations including Cedars-Sinai Medical Center, PIH Health Good Samaritan Hospital, and St. Mary Medical Center.

Insurance

Lalezari Surgical lists acceptance of major PPO plans and several insurers/networks, including UnitedHealthcare, Cigna, Blue Shield of California, Medicare, Oscar Health, MultiPlan and additional California medical groups. Patients should verify current coverage directly with the practice before scheduling.

Contact

Lalezari Surgical
1245 Wilshire Blvd., Suite 907
Los Angeles, CA 90017
Phone: (213) 545-1656
Email: sl@lalezarisurgical.com
Website: lalezarisurgical.com

Additional office:
432 E 10th St.
Long Beach, CA 90813

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  • No membership or hidden fees! Everything you need is included
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