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About St. Joseph Health

SJH provides a full range of care facilities including 16 acute care hospitals, home health agencies, hospice care, outpatient services, skilled nursing facilities, community clinics and physician groups. All of our hospital and home health entities are accredited by the Joint Commission. In our award-winning facilities, SJH maintains a "continuum of care," matched to the diverse needs of the urban centers, smaller cities and rural communities who depend on us every day.

Ahmad Abou Abbass, MD

  • General Surgery
Additional Language Spoken
Medical Groups & Affiliations
  • Mission Hospital Affiliated Physicians
  • Mission Hospital Regional Medical Center
South Orange County Surgical Medical Group - Mission Viejo
26732 Crown Valley Parkway
Suite 351
Mission Viejo, CA 92691
Accepting New Patients

Primary Office

South Orange County Surgical Medical Group - Mission Viejo
26732 Crown Valley Parkway
Suite 351
Mission Viejo, CA 92691
Get Directions
(949) 364-1007
(949) 364-6057

More Information

  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • General Surgery
    Education & Training
    • Fellowship
      Henry Ford Hospital - 2010
    • Medical School
      American University of Beirut - 2002
    • Residency
      Henry Ford Hospital - 2015
  • Biography


    Dr. Abbass graduated with his Bachelor of Science in Biology in 1998 from the University of Beirut, Lebanon.  He pursued his education in Lebanon and graduated with his Medical Doctorate in 2010.  He then traveled to the United States and completed an additional residency at Henry Ford Hospital in Detroit, Michigan during 2010-2015. He remained Senior Staff Surgeon at Henry Ford Health Systems from 2015-2018.

    He is board certified by the American Board of Surgeons, the American Society of Transplant Surgeons for Liver and Kidney Transplantation, and a Fellow of the American College of Surgeons.  He maintains his certifications in Advance Trauma Life Support, Advanced Trauma Operative Management, and Advanced Cardiac Life Support.  He is currently expanding his practice in Southern California with complex liver/gallbladder/pancreatic surgeries.Dr. Abbass has been appointed as the Director of the Hepatobiliary Program at Mission Hospital.

    Dr. Abbass current areas of expertise include many general surgery cases, such as hernias, gallbladders, diseases of the bowel, laparoscopic and robotic procedures, major abdominal procedures, complex liver, pancreas, and gallbladder cancers, and surgical/trauma critical care.  He is well received by his patients and peers with his energetic and responsive attitude towards surgical intervention.
    Areas of Expertise
    Liver Surgery