Dr. Sergey Lyass, MD

Dr. Sergey Lyass, MD

Bariatric Surgery  ·  
Male  ·  
56 y/o

Accepting new patients

Dr. Sergey Lyass, MD is a bariatric surgery specialist in Los Angeles, CA and has been practicing for 12 years. He specializes in bariatric surgery.

Sergey Lyass, MD

8631 W 3rd St Ste 900

Los Angeles, CA 90048
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Insurance Accepted

  • Aetna
  • Anthem Blue Cross
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of California
  • Blue Shield of California
  • Cigna
  • Commercial Insurance Company
  • Coventry Health Care
  • Health Net
  • Health Net of California
  • LACare
  • Premera Blue Cross
  • UnitedHealthCare

Learn about Dr. Lyass

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you.

Top Care Areas

See how frequently Dr. Lyass performs your care needs compared to other doctors.

more than 79% of peers
Laparoscopic Surgical Procedure
more than 70% of peers
Stomach Surgery
more than 29% of peers

Dr. Lyass's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

Care Philosophy

This content was provided by Dr. Lyass "Patients' understanding of their conditions is the most critical first step in their healing process. We emphasize patient teaching in every aspect of our encounters with our patients. "

1  Specialties

  • Bariatric Surgery

1  Board Certifications

  • General Surgery
    Accredited by: American Board of Surgery*

22  Conditions Treated

26  Procedures

Background Check

0 Malpractice Claims

No malpractice history found for California.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • Second Moscow Ni Pirogov State Medical Institute
    Medical School | Graduated 1985
  • Cedars Sinai Med Center
    Residency Hospital | Completed 2005
  • Cedars Sinai Med Center
    Fellowship Hospital | Completed 2006

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Lyass has no media or publications listed.

Languages Spoken

  • English
  • Hebrew
  • Russian

Memberships & Professional Affiliations

Dr. Lyass does not have any memberships or affiliations listed. If you are Dr. Lyass and would like to add memberships or affiliations, please update your profile.

Northridge Hospital Medical Center

is a Recipient of a Healthgrades Excellence Award
America's 50 Best Hospitals Award

Hospital Quality Award

Dr. Lyass is on the medical staff at our top-rated hospital.

View awards

Dr. Lyass' Reviews

Likelihood of recommending Dr. Lyass to family and friends
5 total reviews (1 has a comment)

Likelihood to Recommend (5)

  • 5
  • 4
  • 3
  • 2
  • 1

Dr. Lyass' Performance

  • Trustworthiness

  • Explains condition(s) well

  • Answers questions

  • Time well spent


Office & Staff Performance

  • Scheduling

  • Office environment

  • Staff friendliness

  • Average wait time

    Under 10 minutes

Patient Comments (1)

Thank you Dr Lyass you have change my life with my Gastro by pass surgery in 11/2/2015 I was 221 lbs now 2/2/16 at 175 lbs . and after being under insulin and diabetes medication iam under no pills and no insulin thankkkkk you thank you Dr Lyass and staff ms Gloria she is so help full and nice...more
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