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.
Kind, prepared,knowledgeable, realistic. Listened and answered all questions and made clear referral.
(1 week ago)
May-2026
Dr. Chang was very friendly, courteous and spent time thoroughly listening. He came up with a comprehensive assessment and treatment plan in our first appt. I’m extremely pleased with my visit.
(1 week ago)
May-2026
I like Dr. Cheng, he explains things to me very clearly. My right is 5 stars.
(3 weeks ago)
Apr-2026
Knowledgeable, thorough, and patient. Good at explaining things in simple terms.
(1 month ago)
Apr-2026
Dr Chang diligently helps me by taking time to make follow up calls after a procedure prescribed.
(1 month ago)
Apr-2026
He is a very good doctor my my was just seeing by this doctor he is very dedicated and caring about the patients he wells communicate with the patients and overall he is great thank you to DR Patrick Chang and his office staff
(1 month ago)
Mar-2026
Appreciate the time given to answer all of my and my husbands’ questions. He did not rush through the results and sent my primary care doctor a message based on what we discussed. The comfort felt builds trust and we sincerely have trusted Dr. Chang with my current care.
(1 month ago)
Mar-2026
It is refreshing to meet a young physician who is both professional and has superb bedside manner!! I am so very impressed how approachable and patient Dr. Chang is! I only wish he specializes in every medical specialty.
(2 months ago)
Mar-2026
Very thorough and informative.
(2 months ago)
Mar-2026
Excellent Doctor
(2 months ago)
Mar-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.
Kind, prepared,knowledgeable, realistic. Listened and answered all questions and made clear referral.
Dr. Chang was very friendly, courteous and spent time thoroughly listening. He came up with a comprehensive assessment and treatment plan in our first appt. I’m extremely pleased with my visit.
I like Dr. Cheng, he explains things to me very clearly. My right is 5 stars.
Knowledgeable, thorough, and patient. Good at explaining things in simple terms.
Dr Chang diligently helps me by taking time to make follow up calls after a procedure prescribed.
He is a very good doctor my my was just seeing by this doctor he is very dedicated and caring about the patients he wells communicate with the patients and overall he is great thank you to DR Patrick Chang and his office staff
Appreciate the time given to answer all of my and my husbands’ questions. He did not rush through the results and sent my primary care doctor a message based on what we discussed. The comfort felt builds trust and we sincerely have trusted Dr. Chang with my current care.
It is refreshing to meet a young physician who is both professional and has superb bedside manner!! I am so very impressed how approachable and patient Dr. Chang is! I only wish he specializes in every medical specialty.
Very thorough and informative.
Excellent Doctor