UOSSM USA is governed by a US Board of Directors. The Board creates the vision, mission and values for the Organization, establishes and maintains its Bylaws, and assures appropriate organizational performance. The Board is committed to organizational excellence and to ensure  transparency and accountability of the Organization.



Dr. Monzer Yazji - President, Co-Founder

Dr Monzer H Yazji, MD, a co-founder of UOSSM and UOSSM USA and serves as the President of UOSSM USA. Dr Yazji has been practicing in the United States as a physician specializing in Internal Medicine since 1998. Dr. Yazji is the owner and President of a Multi-Specialty practice that consists of seven Physicians, three Physician Assistants and three nurse practitioners.

Along with founding the Rio Grande Valley Diabetes Association in 2006 is a present board member of various associations and organizations such as South Texas Health Systems and the Cornerstone Regional Hospital. He also holds memberships with many professional organizations such as the American College of Physicians, and the American, Texas, Hidalgo County, Syrian, and Southern Medical Associations. Dr Yazji is the current Medical Director for the South Texas Diabetic and Metabolic Institute, Edinburg Nursing and Rehabilitation and also serves as a designated speaker for Novo Nordisk Inc. on diabetes prevention and treatment. He is currently recognized by the State of Texas as a Designated Doctor, and his clinic as a High Performer, for Workman’s Compensation.

Dr. Yazji’s hospital affiliations are with the majority of the hospitals located in the Rio Grande Valley. These include the Edinburg Regional Medical Center, the Rio Grande and Cornerstone Regional Hospitals, the McAllen Medical Center and Heart Hospital, the Solara Hospital, and the Doctor’s Hospital at Renaissance. His certifications and licenses include board certification by the American Board of Internal Medicine, the American Board of Obesity Medicine, and a recent appointment as Adjunct Clinical Assistant Professor by the University of North Texas Health Science Center. 

Dr. Ahmad Abo Kayass - Vice President, Treasurer, Co-Founder

Dr. Ahmad Kayass, MD, a co-founder of UOSSM USA and serves as the VP and Treasurer of UOSSM USA. Dr. Kayass has been practicing medicine for nearly 20 years. Dr. Kayass completed his residency at Louisiana State University, then moved to Dallas to join UT Southwestern and Dallas Children’s Medical Center for a fellowship in Sleep Medicine. He is board certified in both Pediatrics and Sleep Medicine by the American Board of Pediatrics and the American Board of Medical Specialties.

After many years in successful private practice, Dr. Kayass chose to expand his opportunities and become the primary care provider at Pediatric Associates of North Texas, and recently at Southern Institute of Sleep Medicine in Edinburg, TX, while also overseeing his previously established practice, Tots N Teens Clinic of Mesquite, TX.  

Along with the long-term care of children’s well-being from birth to adolescence, Dr. Kayass is highly experienced in the management of inpatient and outpatient treatments. He is highly skilled with urgent care procedures as well as caring for critically ill children. Dr. Kayass is also heavily involved in his community by volunteering and hosting events to try and make a difference locally and globally.

Dr. Kayass has served on the boards of several non-profit organizations. He is a member of Shaam Relief Foundation, a non-profit organization in Dallas, TX. He is also a current Member of the Board of Directors of UOSSM-International.


Dr. Hassan Chahadeh, Elected Director, Secretary

Dr. Hassan Chahadeh is an elected Board Member and currently serves as the Secretary of UOSSM USA. Dr Chahadeh is board certified Anesthesiologist with added qualifications in pain management by the American Board of Medical Specialties. Dr. Chahadeh graduated from the University of Damascus-Facility of Medicine, Damascus, Syria in 1985. He did research in microsurgery and completed an internship in General Surgery at Baylor College of Medicine. He then studied Anesthesiology with a 6-month fellowship in Cardiovascular anesthesia at Baylor College of Medicine.

Dr. Chahadeh finished his fellowship training in interventional pain and palliative care at MD Anderson Cancer Center.  Dr. Chahadeh has been practicing pain management since 1996 and currently has office locations in Memorial City and The Woodlands. He is also an active member of UGHS Surgicare, The Woodlands. Dr. Chahadeh is committed to serving each patient individually by managing a treatment plan leading to restored quality of life. 

Dr. Ashraf Traboulsi - Co-Founder

Dr. Ashraf Traboulsi, a co-founder of UOSSM USA and serves as a Member of the Board of Directors of UOSSM USA. Dr. Traboulsi is a successful professional and is highly experienced with organizational leadership.

He graduated from the University of Kentucky with a PhD in Pharmaceutical Science in 1997, and earned his Post-doctoral research in 1999. Dr. Traboulsi spent his professional career in teaching, and in research and development in the pharmaceutical industry, and has several publications related to his field.

Currently, Dr. Traboulsi is a Principal Scientist at Proctor and Gamble (P&G) and holds membership with professional organizations such as the American Association of Pharmaceutical Scientists.

Dr. Traboulsi has served on the boards of several non-profit organizations. He was a founding board member of the Institute of Youth Development in Cincinnati, Ohio. He has served as a Member of the Board of Directors and a Member of the Executive Committee of the Islamic Center of Greater Cincinnati (ICGC) since 2012, and has been the Vice-Chair of the Board since 2013.

Dr. Traboulsi was a founding Board Member and the President of the Syrian American Foundation in 2012, a non-profit organization in the State of Ohio. He is also a current Member of the Board of Directors of UOSSM-International.




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