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.
Very personable with a good bedside manner, Dr. Chang is taking care of a my 93year-old father who had serious GI surgery. We feel that everything is going well so far.
(3 days ago)
Jun-2026
Dr Chang is very patience to listen to his patient.
(5 days ago)
Jun-2026
Very personable and took time to explain everything!
(5 days ago)
Jun-2026
Amazing Docto
(6 days ago)
Jun-2026
Dr. Chang was very kind, friendly, and calming. The appointment was very thorough and we went through everything I was wondering and concerned about. Very happy I chose him!
(1 week ago)
Jun-2026
Excellent at explaining everything, while being kind, polite and professional.
(1 week ago)
Jun-2026
Had a great consultation!
(1 week ago)
Jun-2026
Very thorough. Very good at communicating his concerns.
(3 weeks ago)
Jun-2026
Dr. Chang took the time to listen to my concerns. Very professional.
(3 weeks ago)
Jun-2026
Kind, prepared,knowledgeable, realistic. Listened and answered all questions and made clear referral.
(1 month ago)
May-2026
Read More
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.
Very personable with a good bedside manner, Dr. Chang is taking care of a my 93year-old father who had serious GI surgery. We feel that everything is going well so far.
Dr Chang is very patience to listen to his patient.
Very personable and took time to explain everything!
Amazing Docto
Dr. Chang was very kind, friendly, and calming. The appointment was very thorough and we went through everything I was wondering and concerned about. Very happy I chose him!
Excellent at explaining everything, while being kind, polite and professional.
Had a great consultation!
Very thorough. Very good at communicating his concerns.
Dr. Chang took the time to listen to my concerns. Very professional.
Kind, prepared,knowledgeable, realistic. Listened and answered all questions and made clear referral.