logo of IDEAL Gastro Associates | Gastroenterologists in San Bernardino County, California

1310 San Bernardino Rd, Suite 103, Upland, CA 91786
10807 Laurel St, Suite 200, Rancho Cucamonga, CA 91730
Phone: 909-920-0444 | Fax: 909-920-5044

Basim Z. Abdelkarim, MD

Basim Z. Abdelkarim, MD, gastroenterologist with IDEAL Gastro Associates in San Bernardino County

Dr. Basim Z. Abdelkarim is the founder of IDEAL Gastro Associates and has been in practice for more than 20 years. He is one of the few specialists in the United States with expertise in treating GI disorders associated with Ehlers Danlos Syndrome.

Dr. Abdelkarim serves as a mentor/proctor for medical students and physician assistant students for Western University College of Medicine and is a speaker on GI diseases for the American College of Osteopathic Physicians of California.

In addition to being on staff at San Antonio Regional Hospital for 16 years and Casa Colina Hospital for 7 years, he has served as Director of Gastroenterology at Casa Colina Hospital and Center for Healthcare and is a member of the Medical Executive Committee at San Antonio Regional Hospital. He was Chief of Staff of Kindred Hospital Rancho.

Dr. Abdelkarim loves getting away on family vacations with his wonderful wife and three amazing children. He also finds time to enjoy a round of golf and deep sea fishing with his friends.



  • Fellowship, Gastroenterology: University of California, Irvine
  • Residency, Internal Medicine: University of California, Irvine
  • Medical School: University of California, Irvine, School of Medicine
  • Bachelor of Science, Biological Sciences: University of California, Irvine

Professional Memberships

  • American College of Gastroenterology
  • American Gastroenterology Association

Languages Spoken

  • English
  • Spanish
  • Arabic

Welcome to Our Practice

IDEAL Gastro Associates in Upland and Rancho Cucamonga sees patients by appointment, and our staff can address your concerns in English or Spanish. Our team specializes in the prevention, diagnosis and treatment of a variety of gastrointestinal conditions.