Catherine Ngo, MD

Lynn Eshom

Dr. Ngo is wonderful. She explains everything in a way I can understand. In regards to my GI issues, she looks at all the options. Thank you, Dr. Ngo. You are the very best.

Kim Baccellia

Dr Catherine Ngo and her staff were helpful and listened to my concerns. I especially loved how the nurses listened when I said I was a hard draw and didn’t brush me off.

Suzanne Snapper

Dr. Ngo scheduling is a nightmare. I've never been treated so poorly. Over 5 months to get an appointment and the day of the appointment - they call to verify insurance...but can't do it timely so they move the appointment again. If your time is valuable to you...it certainty is not valuable to them...so think hard before you select Dr. Ngo. Customer service is something that this dr. office does not cares about. They only care if they are going to get paid and how much they make. Extremely disappointing as the rest of the Saddleback Medical Group has been truly amazing.

Farkhunda Mahar

I met Dr. Katherine Ngo first time at scheduled procedure, she is very thorough, courteous, genuinely listened to my questions, very knowledgeable. I was very nervous before the procedure, after meeting her I felt very comfortable, I highly recommend her as Gastroenterologist!