Patrick Chang, M.D., focuses on endoscopic prevention, diagnosis, and management for gastrointestinal/colorectal cancer and diseases, with an interest in pancreaticobiliary care. His interest in serving the community has been recognized by the UCLA Chanceller’s Service Award and as a Gastroenterology Physician of the Year at USC. Having previously served as a Clinical Instructor at both Los Angeles General Medical Center and USC Keck Medical Center, he now welcomes the honor of joining Unio with his esteemed partners and team to serve you and your patients.
Patrick Chang, M.D., focuses on endoscopic prevention, diagnosis, and management for gastrointestinal/colorectal cancer and diseases, with an interest in pancreaticobiliary care. His interest in serving the community has been recognized by the UCLA Chanceller’s Service Award and as a Gastroenterology Physician of the Year at USC. Having previously served as a Clinical Instructor at both Los Angeles General Medical Center and USC Keck Medical Center, he now welcomes the honor of joining Unio with his esteemed partners and team to serve you and your patients.
The reviews listed below were collected independently of Unio Specialty Care through rater8. Each review represents an authentic and verified patient experience.
Worthless visit
(1 week ago)
Sep-2026
So smart and easy to talk too! Thank you for taking care of me!
(1 week ago)
Sep-2026
Patrick is a good listener and provides professional and constructive care.
(2 weeks ago)
Sep-2026
Very courteous and knowledgeable
(2 weeks ago)
Aug-2026
Excellent. Thorough, listens and very considerate.
(3 weeks ago)
Aug-2026
Wry good doctor
(3 weeks ago)
Aug-2026
he seemed like he was in a rush. good advice though.
(1 month ago)
Aug-2026
Very warm and clear information
(1 month ago)
Jul-2026
Very thorough explaining results of previous procedures and answered questions plus very helpful and respectful
(2 months ago)
Jul-2026
Dr Chang is an outstanding, knowledgeable clinician, a kind, compassionate, and dedicated to heal and cure his patients overall wellbeing heart, body, and soul, thank you Dr Chang for your care, I very highly recommend him for everybody looking for an outstanding doctor
(2 months ago)
Jul-2026
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GI-Pasadena - Alessandro Place
50 Alessandro Place Suite 410 Pasadena, CA 91105
Patrick Chang, M.D., focuses on endoscopic prevention, diagnosis, and management for gastrointestinal/colorectal cancer and diseases, with an interest in pancreaticobiliary care. His interest in serving the community has been recognized by the UCLA Chanceller’s Service Award and as a Gastroenterology Physician of the Year at USC. Having previously served as a Clinical Instructor at both Los Angeles General Medical Center and USC Keck Medical Center, he now welcomes the honor of joining Unio with his esteemed partners and team to serve you and your patients.
Dr. Chang graduated from UCLA and received his medical degree as a DeBakey Research Scholar at Tulane University: School of Medicine in New Orleans, Louisiana. Since then, he completed clinical training as part of the USC Trojan Family in his Internal Medicine Residency, General Gastroenterology Fellowship and Advanced Endoscopy Fellowship. During training, he was selected as Chief Fellow of Outpatient Endoscopy and produced over twenty publications and seventy abstracts ranging from quality improvement in biliary endoscopy (ERCP), endoscopy outcomes and safety in the United States and seminal work for artificial intelligence and large language models to enhance colorectal cancer screening and management.
Dr. Chang is double board certified in Internal medicine and Gastroenterology. He is an active member and reviewer for the American Journal of Gastroenterology, the premier journal for American College of Gastroenterology. He has contributed first-author publications to top societal journals such as the ASGE’s Gastrointestinal Endoscopy and the AGA’s Clinical Gastroenterology and Hepatology.
Worthless visit
So smart and easy to talk too! Thank you for taking care of me!
Patrick is a good listener and provides professional and constructive care.
Very courteous and knowledgeable
Excellent. Thorough, listens and very considerate.
Wry good doctor
he seemed like he was in a rush. good advice though.
Very warm and clear information
Very thorough explaining results of previous procedures and answered questions plus very helpful and respectful
Dr Chang is an outstanding, knowledgeable clinician, a kind, compassionate, and dedicated to heal and cure his patients overall wellbeing heart, body, and soul, thank you Dr Chang for your care, I very highly recommend him for everybody looking for an outstanding doctor