3 Best Gastroenterologists in Santa Ana, CA

“ Dr. Essam Quraishi is the founder and president of Gastrointestinal and Liver Consultants. He graduated from medical school at Deccan College of Medical Sciences in Hyderabad, India. Dr. Essam Quraishi completed his fellowship in gastroenterology at Henry Ford Hospital, Detroit. His special interests include viral hepatitis, inflammatory bowel disease, and colon cancer screening. Dr. Essam Quraishi has presented original research on quality control in screening colonoscopies at national gastroenterology conferences. He is well-versed in the latest therapies for Hepatitis C and treats all digestive tract diseases. Dr. Essam Quraishi is experienced in administering the newest therapies for Crohn’s disease and Ulcerative Colitis. His practice is also available in Irvine, CA. Gastrointestinal and Liver Consultants offers same-day and next-day appointments for urgent referrals. ”

“ 2026 Highlights: Dr. Javed Nisar Sadiq is a gastroenterologist specializing in diseases of the digestive system and liver. He is board-certified in gastroenterology and internal medicine and provides care in Santa Ana and other Orange County locations. He holds a Bachelor of Science degree from the University of California, Riverside, with a Dean/Chancellor Academic Scholarship, and went on to pursue a medical degree from Ross University School of Medicine. He graduated from medical school magna cum laude (high honors). Dr. Javed Nisar Sadiq underwent residency training in internal medicine at the State University of New York. ”

“ Dr. Carlos Saad received his medical degree from the Universidad Nacional Autónoma de México. He completed his Internal Medicine and Gastroenterology residency at the LAC/USC Medical Center. He also completed his fellowship at the LAC/USC Medical Center. Dr. Carlos Saad is board-certified by the American Board of Internal Medicine. He specializes in diagnosing and treating liver and gastrointestinal diseases and disorders. His expertise extends to conditions such as hepatitis, nonalcoholic fatty liver disease, and other ailments affecting the liver. Dr. Carlos Saad's research focuses on various areas, including achlorhydria in patients with achalasia, cryoglobulinemia induced by hepatitis C, drug-induced liver injury, pancreatic physiology, and nonalcoholic steatohepatitis (NASH). Dr. Carlos Saad's practice is 2.7 miles away from downtown Santa Ana. ”