Browse Health
Surgical Specialist
26 years of experience
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (3)

The overall average patient rating of Dr. Sergey Lyass is Excellent. Dr. Lyass has been reviewed by 6 patients who have provided 3 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.0
Promptness 3.7
Courteous Staff 4.0
Accurate Diagnosis 4.0
Bedside Manner 3.7
Spends Time with Me 4.0
Follows Up After Visit 4.0

Specialties & Research

Dr. Sergey Lyass, FACS, MD is board certified in Surgery.

  • He has special expertise in 4 areas:
  • Gastric Bypass (Gastrojejunostomy)
  • Laproscopic Surgery (Laparoscopy)
  • Liver Transplantation
  • Weight Loss Surgery (Bariatric Surgery)

Education & Awards

Dr. Lyass graduated from Second Moscow Medical Institute.


Dr. Lyass has 8 hospital affiliations:

  • Glendale Adventist Medical Center/Adventist Health 
  • Sherman Oaks Hospital and Health Center 


  • Hebrew
  • Russian
  • English

> > > > Dr. Sergey Lyass, FACS, MD

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Additional Information
Dr. Sergey Lyass FACS and MD is a male Surgeon, has 26 years of experience and practices in Surgery.
Where does Dr. Sergey Lyass practice?
Dr. Sergey Lyass has 2 office locations.
Dr. Sergey Lyass practices Surgery near Los Angeles, CA.
Additional practice locations include: Las Vegas, NV.
See Los Angeles Surgeons.