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About Dr. Yosef Nasseri


Yosef Nasseri, MD, FACS, FASCRS, is one of the founding partners of The Surgery Group of Los Angeles. He is double board-certified in general and colorectal surgery, specializing in robotic and minimally invasive techniques for the treatment of colon and rectal diseases; including inflammatory bowel disease, as well as malignant and benign colorectal diseases.

In addition to a high clinical volume, Dr. Nasseri is very active in clinical research and academia. He regularly collaborates with surgeons and physicians from diverse specialties, conducting multiple prospective and retrospective research projects with the support of a dedicated research staff and the backing of The Surgery Group of Los Angeles’s research foundation. Dr. Nasseri’s research is primarily outcomes based, with a concentration in both benign and malignant colorectal diseases. By focusing on patient outcomes, he can introduce and test new treatment modalities and algorithms.

Through this work, he has published several book chapters, journal articles, and presented at various conferences. His role also extends to regularly editing journal articles. Furthermore, Dr. Nasseri is a committee member and contributor at American Society of Colon and Rectal Surgeons (ASCRS), The Consortium for Optimizing the Treatment of Anal Cancer (OSTRiCh), and American College of Surgeons (ACS), among others. He also served on various committees at Cedars Sinai over a span of several years. These committees include the MD RN collaborative, robotic steering committee and the cancer committee. He also completed the Cedar’s leadership program.

Procedures Performed by Dr. Nasseri

  • Robotic surgery
  • Laparoscopic general surgery
  • Colonoscopy
  • Transanal endoscopic microsurgery (TEM)
  • Minimally invasive trans-anal surgery
  • Surgical procedures for hemorrhoid treatment
    • Hemorrhoidal sclerotherapy
    • Rubber-band ligation
    • Procedure for prolapse and hemorrhoids (PPH)
    • Thrombotic hemorrhoid treatment
  • Abscess drainage, fistulotomy, fissure treatment
  • Surgical treatment of pilonidal disease
  • Medical and surgical treatment of fecal incontinence
  • Implantation of Sacral Nerve Stimulator for fecal incontinence
  • Surgical treatments of rectal prolapse
  • Surgical treatment of Crohn’s and ulcerative colitis
  • Rectal Pouch (also known as an IPAA or J-Pouch)
  • Sphincter-preserving rectal surgery

Education & Medical Training

After obtaining his bachelor’s degree from UCLA, Dr. Nasseri attended medical school at the Albert Einstein College of Medicine in New York. He then completed a seven-year general residency, with a year dedicated to research at the Cedars-Sinai Medical Center in Los Angeles. Following his residency, he completed a fellowship in colorectal surgery at the world-renowned Cleveland Clinic.

Dr. Nasseri is a member of several reputable medical and surgical societies and has performed a wide variety of charitable work, including medical missions in third world countries, organizing services to disadvantaged communities, and educating young people on prevention of HIV and other communicable diseases. He is very active in academia. He has published numerous peer-reviewed journal articles and book chapters, is a reviewer of several journals, and has delivered lectures and participated in panels and committees at national and international conferences.


UCLA (University of California, Los Angeles)


Albert Einstein College of Medicine of Yeshiva University Medical School


Cedars-Sinai Medical Center Residency, General Surgery


Cleveland Clinic Foundation Colorectal surgical fellowship



FL State Medical License


CA State Medical License


American Board of Surgery – General Surgery


American Board of Surgery – Colorectal Surgery



American Board of Surgery


American Society of Colon and Rectal Surgeons


American College of Surgeons


American Medical Association


American College of Gastroenterology

Schedule a Consultation

    • If over-the-counter treatment no longer soothes your discomfort from hemorrhoids
    • When you have been diagnosed with a disease of the colon, such as cancer, diverticulitis, or Crohn’s disease
    • If you suspect you have a hernia or are experiencing continuous abdominal pain
    • For regular colon screenings and colonoscopies
    • If incontinence with bowel movements has disrupted your daily life
  • If you have pain or bleeding in the anal region
  • If you are seeking the most minimally invasive surgical options
  • If you are seeking robotic surgery as a treatment option
  • For the most advanced, sphincter-preserving treatment of rectal cancer
  • If you are interested in a second opinion regarding a recent diagnosis