Meet Dr. Deborah Negusse, M.D., M.P.H.

Premier Gastroenterology Institute (PGI) has MULTIPLE BOARD-CERTIFIED GASTROENTEROLOGISTS as well as Advanced Providers.  These specialists are dedicated to their patients and are committed to providing the highest quality gastroenterology service in the area. 

All our Physicians and Advanced Providers maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in the medical field. 


Board-Certified, Fellowship trained, Medical Doctors (MD)

Our Advanced providers are Certified Physician Assistants with multiple years of experience

  • Deborah Negusse, M.D., M.P.H.

    Rancho Cucamonga, San Bernardino & Riverside, CA, Founder & Board-Certified Gastroenterologist

    Premier Gastroenterology Institute

    Dr. Negusse was raised in Southern California.  She obtained a joint Master of Public Health and Doctor of Medicine degree from  HARVARD UNIVERSITY AND UNIVERSITY OF SOUTHERN CALIFORNIA.  She then completed a Gastroenterology and Hepatology fellowship at Loma Linda University following her internship and residency at the University of Southern California. While in private practice, Dr. Negusse remains a Clinical Assistant Professor at Loma Linda University.  As a Board-Certified Gastroenterologist, she focuses on various aspects of gastroenterology including hepatobiliary disease, digestive diseases, pancreatic diseases, inflammatory bowel diseases, and colon cancer screening.  She is very experienced in endoscopic procedures for both diagnostic and therapeutic purposes. 

    She is well known for her expertise in gastroenterology and her excellent bedside manners.  She believes in patient centered care, compassion, and attends to the individual needs of patients.  She is fluent in Spanish and is one of the only female Spanish speaking Gastroenterologists in the Inland Empire. 

    During her free time, she enjoys running, swimming and quality time with her husband and two children.  

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Our Locations

8221 Rochester Avenue Suite 130, Rancho Cucamonga, CA, 91730

Hours of Operation

Our Regular Schedule



9:00 am-5:00 pm


9:00 am-5:00 pm


9:00 am-5:00 pm


9:00 am-5:00 pm


9:00 am-5:00 pm