Dr. Liz Cruz graduated from college in 1988 with a B.S. in Medical Technology. Prior to Medical School, she taught English for one year in Bangkok, Thailand. In 1989, Dr. Cruz began her formal career in medicine by attending Loma Linda University School of Medicine in California. During medical school, Dr. Cruz
was part of a student / staff physician team, which provided relief work to the natives along the Amazon River. She graduated from medical school in 1993 and then went on to do her Internal Medicine Internship under the auspices of the U.S. Navy at the Naval Hospital, Oakland, California.
Upon the closure of the Naval Hospital in Oakland, Dr. Cruz transferred and completed her internal medicine residency at the University of California, San Francisco. In 1996, she was deployed to Guam to fulfill her commitment to the U.S. Navy. While in Guam, she served as a Staff Internist at the U.S. Naval Hospital. During her active duty years in the Navy, she received the Meritorious Unit Commendation Medal as well as the Humanitarian Service Medal and the National Defense Medal for service during Operation Desert Storm. During her last two years in Guam, she was the Head of the Internal Medicine Division at the U.S. Naval Hospital.
In 2000, she went back to the University of California, San Francisco where she completed her training in Gastroenterology (GI). In 2004, Dr. Cruz moved to Arizona to join the Arizona Medical Clinic in Peoria. She served as a full-time gastroenterologist in both the outpatient and inpatient settings doing the full range of general gastroenterology including endoscopic procedures as well as hepatology. In January 2007, she opened the doors to her own practice, Digestive Healthcare Associates, LLC in Phoenix, Arizona:
In 2010, Dr. Cruz along with her life partner, Tina Nunziato began offering the Dr. Liz Cruz Wellness Program to educate patients on the very things that were causing their digestive issues. After helping hundreds of patients eliminate their digestive issues through detoxification, digestive restoration, nutrition, and proper hydration, Dr. Cruz decided to launch her products and services online to the masses. Her DNA for Digestive Health 3-step program and the online community she created are changing people’s digestive health for good. More information about her products and services can be found at: and through her “Digest This” podcast at:
Dr. Cruz was born in Los Angeles, California and was raised in Orlando, Florida. She speaks fluent Spanish and enjoys her family, traveling, jazz music, and photography.

Dr. Cruz is a Diplomate of the American Board of Internal Medicine and the American Board of Gastroenterology. She is a member of the American College of Gastroenterology and the American Society for Gastrointestinal Endoscopy.