(818) 243-9999
716 W. Broadway Glendale, CA 91204

Meet our Physicians

Sergey Lyass, M.D

Medical Director/ Bariatric/Weight Loss Surgeon

Serge Obukhoff

Neurospine Surgeon

Mahbod Paya, M.D.

Bariatric/Weight Loss Surgeon

Sergey Lyass, M.D

Medical Director/ Bariatric/Weight Loss Surgeon

Sergey Lyass, MD is a bariatric surgeon, weight loss specialist, and da Vinci® robotic surgery provider serving patients in Los Angeles, Glendale, and Marina del Rey, California. He received his medical degree from the 2nd Moscow Medical Institute (now Moscow Medical University) in 1985.

He was trained in general surgery in Israel at the Hebrew University-Hadassah Medical Center in Jerusalem, and did his internship at Mount Sinai Medical Center in New York City. Dr. Lyass completed both his surgical residency and his fellowship in minimally-invasive and bariatric surgery at Cedars-Sinai Medical Center in Los Angeles.

Serge Obukhoff, MD, PHD, FAANS

Neurospine Surgeon

Dr. Serge Obukhoff serves as an instructor of MOTION PRESERVATION/ADR TECHNIQUES and MINIMALLY INVASIVE SPINE SURGERY TECHNIQUES to other surgeons around the world and performs neurosurgical procedures at the UCLA Medical Center and other hospitals Internationally.

Dr. Obukhoff has been a Clinical Professor in Tulane University in New Orleans. He also has held multiple postgraduate teaching and research positions in leading Neurosurgical Centers in United States and Europe.

He served as a visiting professor at Columbia University in the City of New York, Duke University Medical Center in North Carolina, Vienna University Hospital, Austria, Frenchay Hospital in Bristol, England, Birmingham Children Hospital and Queen Elisabeth Hospital in Birmingham, England, and Imperial Cancer Research Fund Laboratories in London. He is a member of international neurosurgical societies, ESMINT, EANS.

Mahbod Paya, M.D.

Bariatric/Weight Loss Surgeon

Board-certified in general surgery by the American Board of Surgery,
A diplomat of the American College of Surgeons and a member of the Society of American Gastrointestinal Endoscopic Surgeons, the American Society of Bariatric Surgeons and the American College of Surgeons.

Grant Williams, M.D.

Pain Management

MD — Ross University School of Medicine

Internal Medicine — UCSF-Fresno

Anesthesiology — LA County/USC

Interventional Pain Management, Anesthesiology,  

Hormone Balancing, Metabolic Disorders, Weight Loss  


10/2002-10/2003 Pain Management Training – Phoenix Pain Management 

07/1994-06/1997 Anesthesiology Residency  

University of Southern California  Los Angeles, CA  

– LA County Hospital 

– Women’s and Children’s Hospital 

– Children’s Hospital of LA 

– USC University Hospital 

– Norris Cancer Hospital 

06/1993-07/1994 Internal Medicine Internship  

University of Southern California San Francisco/Fresno (Valley Medical  Center) Fresno, CA  


08/1986-06/1991 Doctor of Medicine  

Ross University School of Medicine  

Dominica, WI  

08/1983-06/1986 BS- Major in Zoology/Pre-Med-Minor: Chemistry California State University, Fresno, CA 

09/1981-05/1983 Major: Biology-Chemistry Oklahoma Christian University, Oklahoma City, OK 

Work Experience: 

1997-1998 Beverly Hills Outpatient Surgery Center 

1998-2005 Mill Creek Ambulatory Surgery Center 

1999-2005 Sierra Ambulatory Surgery Center 

07/2002-10/2003 Dinuba Surgery Center 

07/2002-Present Pain Management Practice 

06/2006-Present Comprehensive Outpatient Surgery Center 08/1996-Present *Private practice anesthesia, mostly outpatient surgeries 

Military Experience: 

1996-2006 Major in the Army Reserve 

Deployment to Kosovo, UN Peacekeeping Mission 2001 

Specialized Training: 

Chief Resident in charge of organizing and scheduling 40 residents – 1 year Cardiothoracic Anesthesia subspecialty training- 6 months 

Pain Management- 1 year 


California State Medical License 


Advanced Cardiac Life Support 

Basic Life Support 


American Medical Association 

American Society of Anesthesiology 

California Society of Anesthesiology 

Hermoz Ayvazian, DPM


Accomplishement/ Specializations

* Graduated from UCLA with a Bachelor of Science in Biology in 1984.  

Hermoz Ayvazian, DPM, FACFAS, QME, is lead podiatrist at Glendale Foot and Ankle Podiatry Center, providing expert services for patients in the Glendale and Burbank areas of Los Angeles. Dr. Ayvazian has been practicing for over 27 years and is a well-known and highly respected clinician in the area. His skills and expertise as a podiatrist are such that the medical professionals living in Glendale and Burbank visit him with their personal foot health issues. Dr. Ayvazian has been voted a national Top Doctor several years in a row by Pasadena Magazine. Although he’s achieved such an illustrious status, he still devotes himself to his patients and excels at making them feel comfortable. He specializes in wound care and diabetic foot problems, and is board-certified in reconstructive surgery of the forefoot, rearfoot, and ankle. Dr. Ayvazian is continually looking at ways to improve the practice even further and offer the most comprehensive range of services to patients. For example, he’s found patients benefit greatly from innovative treatments like PRP (platelet-rich plasma) therapy for promoting tissue regeneration following tendon tears and fractures of the lower leg and foot, and laser therapy for nail fungus. Dr. Ayvazian also provides state-of-the-art laser therapies for treating varicose veins and aesthetic hair removal. With his extensive experience and advanced podiatry skills, Dr. Ayvazian is ideally placed to care for all your foot and ankle conditions.


* Has been certified by the American Board of Podiatric Surgeons in foot and ankle surgery and Rearfoot/ Ankle Reconstructive Surgery.

* Has also been certified by the American Academy of Wound Management and was the only physician for California to be invited to the prestigious ILIZAROV LIMB SALVAGE INSTITUTE in Kurgan Siberia (the birthplace of limb salvage).