Dr. Peter M. Rosenberg, M.D. attended Harvard College and Harvard Medical School, after which he completed his Internal Medicine residency and Gastroenterology/ Hepatology fellowship at Massachusetts General Hospital. His interests include liver disease, quality improvement and outcomes assessment, and capsule endoscopy, as well as general gastroenterology.
Dr. Peter M. Rosenberg, M.D. attended Harvard College and Harvard Medical School, after which he completed his Internal Medicine residency and Gastroenterology/ Hepatology fellowship at Massachusetts General Hospital. His interests include liver disease, quality improvement and outcomes assessment, and capsule endoscopy, as well as general gastroenterology.
The reviews listed below were collected independently of Unio Specialty Care through rater8. Each review represents an authentic and verified patient experience.
Best GI Doctor out there!!
(4 days ago)
Apr-2026
Dr Rosenberg is very knowledgeable and kind. He makes talking about an uncomfortable subject comfortable. I appreciate his conservative treatment plan.
(4 days ago)
Apr-2026
He has kept me safe. Wonderful doctor
(5 days ago)
Apr-2026
Always thorough and concerned for your health.
(6 days ago)
Apr-2026
Thank you for your time and knowledge in the consultation.
(1 week ago)
Apr-2026
Appointment was great … wait time was about 30 minutes past appointment time, though.
(2 weeks ago)
Apr-2026
Dr. Rosenberg is a fantastic physician! He takes care of me and other family members!
(1 month ago)
Mar-2026
My GI doctor the past 10+ years. Excellent care.
(1 month ago)
Mar-2026
This was the first visit with him. He took time to know my medical history and answered all my questions. These are crucial characteristics of being professional.
(1 month ago)
Mar-2026
Very professional, yet personal.
Excellent beside manners!
Explains everything very clearly.
Thank you!
(1 month ago)
Mar-2026
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GI-Pasadena - Alessandro Place
50 Alessandro Place Suite 410 Pasadena, CA 91105
Dr. Peter M. Rosenberg, M.D. attended Harvard College and Harvard Medical School, after which he completed his Internal Medicine residency and Gastroenterology/Hepatology fellowship at Massachusetts General Hospital. He has lived in Southern California since completing training in 1999. His interests include liver disease, quality improvement and outcomes assessment, and capsule endoscopy, as well as general gastroenterology.
Dr. Rosenberg is a member of the medical staff at Huntington Hospital in Pasadena, where he has been active in patient care, teaching of residents and medical students, and positions of medical staff leadership. He is also a proud member of the medical staff of Pasadena Endoscopy Center.
Best GI Doctor out there!!
Dr Rosenberg is very knowledgeable and kind. He makes talking about an uncomfortable subject comfortable. I appreciate his conservative treatment plan.
He has kept me safe. Wonderful doctor
Always thorough and concerned for your health.
Thank you for your time and knowledge in the consultation.
Appointment was great … wait time was about 30 minutes past appointment time, though.
Dr. Rosenberg is a fantastic physician! He takes care of me and other family members!
My GI doctor the past 10+ years. Excellent care.
This was the first visit with him. He took time to know my medical history and answered all my questions. These are crucial characteristics of being professional.
Very professional, yet personal. Excellent beside manners! Explains everything very clearly. Thank you!