Member:
• American Association for the Advancement of Science
• Italian Society of Otolaryngology and Cervico-Facial Surgery
• Interventional Oncology Society
• Deutsche Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie
• British Association of Head and Neck Oncologists
• International Academy of Oral Oncology
• European Working Group on Human Auditory & Vestibular Histopathology
• Slovenian Association of Otorhinolaryngologists
Committees:
• Laryngeal Cancer Research, University of Padua, Director
• World Health Organization Committee on "Histological Typing of Tumours of the Upper Respiratory Tract and Ear". 
• Classification of Laryngeal Cancer Committee of the Laryngeal Cancer Association

• American Association of Cancer Research (AACR)
• American Head and Neck Society (AHNS)
• Society of Investigative Dermatology (SID)

Member:
• International Society for Cerebral Blood Flow and Metabolism
• Organization for Human Brain Mapping
• National Spasmodic Dysphonia Association
• International Brain Research Organization
• Society for Neuroscience
• Armenian National Science and Education Foundation (ANSEF)
• Society of Medical Doctors of Lower Saxony, Germany
• Armenian Ear-Nose-Throat Diseases Scientific Society
• Association of Armenian Medical Students and Young Doctors

Committees:
• Communicative Sciences Compliance Committee, University of Mississippi Medical Center
• Communicative Sciences Education Committee, University of Mississippi Medical Center
• Communicative Sciences Chief Search Committee, University of Mississippi Medical Center
• Geriatric Committee, University of Mississippi Medical Center

Member:
• Member of the Microvascular Subcommittee to the AAO-HNS
• American Academy of Otolaryngology-Head and Neck Surgery Member
• American Head and Neck Society
• Canadian Society of Otolaryngology
• American Medical Association
• Canadian Medical Association
• Royal College of Physicians and Surgeons
• South Carolina Otolaryngology Association
• Residency Training Committee
• Divisional Director of the Endocrine surgery Committee
• Head of the Microvascular Committee

Member:
• American Academy of Women Dentists
• American Academy of Oral Medicine
• International Society for Oral Oncology
• American Dental Association
• Mississippi Dental Association
• Pierre Fauchard Academy
• Associate Membership, UMHC Cancer Institute
• Mississippi Dental Association; District IV, New Member Chair
• Multinational Association of Supportive Care in Cancer
• MS Society of Otolaryngology Head and Neck Surgery
• American Academy of Dental Sleep Medicine
• Board of Directors, The Mustardseed

Member:
• Fellowship/Scholarship Committee
• Education Committee
• Executive Committee, Fourth International

Member:
• American College of Surgeons
• American Academy of Pediatrics (AAP ID#1069609)
• American Society of Pediatric Otolaryngology (ASPO)
• European Laryngological Society (ELS)
• European Academy of Facial Plastic Surgery
• American Academy of Otolaryngology-Head and Neck Surgery
• Lebanese Order of Physicians
• Lebanese Society of Otolaryngology-Head and Neck Surgery

• American Academy of Otolaryngology–Head and Neck Surgery
• American Society of Pediatric Otolaryngology (ASPO)
• Society of University Otolaryngologists
• Association for Research in Otolaryngology

Member:
• American Academy of Pediatrics
• American College of Surgeons Professional Association
• American College of Surgeons Professional Association
• American Medical Association
• American Board of Otolaryngology-Head and Neck Surgery Foundation
• American Society of Pediatric Otolaryngology

Member:
• American Association for Cancer Research
• American Society for Cell Biology
• University of Pittsburgh Cancer Institute

Associations:
• American Academy of Otolaryngology/Head & Neck Surgery
• American Broncho-Esophagological Association
• American College of Surgeons
• American Laryngological Association
• American Laryngological, Rhinological and Otological Society, Inc. (The Triological Society)
• American Society for Head and Neck Surgery
• Collegium ORLAS
• Santa ClaraCounty Medical Association
• Society of University Otolaryngologists
• Paul H. Ward Society, Inc.
Committees:
• University Grants Committee, Hong Kong Government
• Areas of Excellence Group, UGC Hong Kong
• American Board of Otolaryngology
• Scientific Advisory Board of Accuray Oncology
• Eli Lilly National Otolaryngology Advisory Board
• Otolaryngology Advisory Board, Adams Laboratories, Inc.,
• Committee on Student Performance
• Strategic Planning Sub-Committee on Strategies and Programs
• Joint Committee on Tenure and Status of Women

Member:
• American Academy of Otolaryngology – Head and Neck Surgeons
• American Head and Neck Society
• American College of Surgeons
• Orleans Parish Medical Society
• Louisiana State Medical Society
Committees:
• Member of the Surgical Performance Improvement Committee Tulane Univeristy Hospital and Clinic
• Nomination, Committee American Head and Neck Society
• American Head and Neck Society Delegate to the AAO-HNS Practice Expense Consensus Panel

Member:
• Honorary Member, Turkish Laryngology Society
• Israeli Society for Head & Neck Surgery & Oncology
• American Society of Clinical Oncology
• International Society for Skull Base Surgery Founding Member (Zurich Switzerland)
• American Laryngological Association
• Brazilian Skull Base Society (Honorary Member)

Member:
• American Academy of Cancer Research       
• American Academy of Otolaryngology   
• American College of Surgeons       
• American Head and Neck Society                   
• Meeting Program Committee Member
• Johns Hopkins Medical and Surgical Assoc   
• Maryland Society of Otolaryngology                   
• Society of University Otolaryngologists

Member:
• Chicago Laryngologic and Otologic Society
• American Board of Otolaryngology
• Memphis Society of Otolaryngology - Head & Neck Surgery
• American Rhinologic Society
• American Academy of Otolaryngology - Head & Neck Surgery

• American Society of Clinical Oncology
• Connective Tissue Oncology Society

Member:
• American Academy of Otolaryngology Head and Neck Surgery
• American Academy of Sleep Medicine
• American Society for Lasers in Medicine and Surgery
• Society for Ear, Nose, and Throat Advances in Children
• Dysphagia Research Society

• American Association for Cancer Research
• American Society for Pharmacology and Experimental Therapeutics

Committees:
• American Speech-Language-Hearing Association (ASHA)
• American Head and Neck Society (AHNS) Program Committee
• World Voice Consortium (Seoul, Korea), Program Committee
• Wound Healing Society
• The Voice Foundation

• American Cleft Palate-Craniofacial Association
• Chaired grant review committees for NIDR
• International Association of Orofacial Myology

Member:
• Austrian Society of Otolaryngology
• German Society of Otolaryngology
• Austrian Society of Physicians
• German Society of Physicians
• Association for Research in Otolaryngology (ARO
• European Academy of Otology & Neuro-Otology (EAONO
• Politzer Society
• Triological Society
• American Academy of Otolaryngology (AAO-HNS)
• American Neurotology Society (ANS)
• HEARRING – Comprehensive Hearing Implant Centers. Institution (UNC)
• American College of Surgeons (ACS)

Committees:
• American Academy of Otolaryngology- Head and Neck Surgery
• Scientific Advisory Committee
• Radiation Therapy Oncology Group (RTOG)
• Head and Neck Surgery Committee
• Pennsylvania Academy of Otolaryngology – Head & Neck Surgery
• Core Otolaryngology & Practice Management Education Committee

Member:
• Barany Society
• Secretary of the Barany Society
• Swedish Medical Association
• Swedish association of Otolaryngology
• Medical Association of Upland
• Swedish Association in vestibular research
• Danish Society of Otolaryngology 1991
• Swedish Society for Otosurgery
• American Otologic Society