I had a colonoscopy and told my new doctor, Kavita Singh, that I was concerned about the severse…read morestomach cramps I had from the excess air left in my body, frrom the previous doctor's colonoscopy. Kavita Singh was awesome - I had no stomach cramps whatsoever from her doing my procedure - she listened to me and removed all of the excess air. It was the best experience I could have asked for with Dr. Singh. I would highly recommend her to anyone needing this procedure.

I went in for my first time colon inspection end of April with Dr. Riff. The staff in both offices…read morewere very professional, efficient, and reassuring. The nurse made sure I tied the gown in the back. They answered all of my questions and provided written prep instructions and post-procedure report. The laxative was palatable when mixed with the lemon packet, chilled, and taken through a straw. The anesthesiologist checked for allergies and injected some great stuff. I had a great nap, and went home with report in hand. I highly recommend this team for anyone facing a first time procedure.

i had a referral from my primary care physician for dr. mcquire, as i had used him before for my…read moreproblems. upon getting the referral from my insurance in december, i called for an appointment. they could not see me until march 17th. i didn't ask any questions, as his staff and i have had issues before, i accepted appointment. on march 16th i received a phone call from "robbie" one of his office girls. she left me a message of what i have been diagnosed with and told me i have the wrong doctor..so she apparetly overrides my primary care doctor attempting to get me help wih my stomsch issues, she is fully aware i was his patient but cancelled my appointment andcsaidvto see a rhumatodologist..which i already have. referrels do not state your diagnosis but only the referring to the doctor referred to. ribbie at one puntbwhen my doctor was on vacation and refused to get my percsription for xanex refilled and i had to fight. xanex is a scary drug and i had been takng it for 2 years. the doctor i was using came back and refused my refill. prescribed a medication that should not have had as does not mix well with other prescriptions, thus rendering me extremely ill for several weeks. this revenge attitude is not something that one should not have to put up with. she works there as customer service and her liking or disliking a patient should stay at home. i am filing a complaint with my insurance, the state health departmentv against the dr. license.

Dr. McGuire has performed endoscopies and colonoscopies on all four of us. He, unfortunately,…read morediscovered colon cancer in my late husband and eldest son. He was instrumental in the treatment of my husband and referred my son to the City of Hope. His professionalism is excellent as are his skills. In addition, he genuinely cares about his patients. There is nothing impersonal about his care. I do not say lightly that I trust him with my life. No, he doesn't walk on water. Among all the physicians I've been exposed to he is what I would call the best. How many doctors take time out of their schedule to attend a Celebration of Life Service for a 32 year old patient who lost his battle with colon cancer?

After Dr. Martin ordered blood work, I had the tests done but never received a call with my…read moreresults. I've left two messages over a three-week period with no response. The lack of communication is unacceptable.

My husband and I just had visits and our procedures done by Dr. Martin. He was very friendly,…read morecaring and knowledgeable. Everything went smoothly. No problems getting in for appointment and accommodating if needed earlier one for procedure.

Dr. Mortensen helped me a lot with my health over the years. After years of debilitating pain and…read moresuffering he uncovered the root of my ailment and helped me on my journey to achieving optimal health.

I started seeing Dr. Craig Mortenson around November of 2024. I was having all kinds of weird…read moresymptoms and my body was all out of wack. My blood pressure and cholesterol was up, my hormones were down, and I was having weird panic attacks that I've never had before. After trying a few things that made me feel better but not great, my test results came back as having leaky gut in March of 2025. He asked me to get on a strict protein diet and gave me a few supplements, after about 3 months I was feeling better but still had to maintain my diet and supplements and now at month 5 I'm feeling great again and all my tests are stable. When my primary physicians only prescribed me medication to mask the symptoms Dr. Mortenson dug deep to find out what was causing these issues. I am still on the journey of healing my gut and stabilizing my gut bacteria but I can honestly say I feel much better and almost back to normal. I will never regret making the decision to call Dr. Mortensons office and don't even know how I would function if I just gave in and took the meds my primary was giving me and thought that was all that could be done. This team is amazing and you should never just settle with your health!

I can't say enough about this place. At 58, this was a first colonoscopy for me. Between my nurse…read moreCindy, the anesthesiologist and Dr Singh, they were able to make me comfortable with what was about to happen. These people are not only pros, they are funny and understand that as their patient you may be a little nervous and do their best to put you at ease.

Brought a family member here for a procedure and had a great experience overall. Naina at the front…read moredesk was so great at communicating every detail we needed to know beforehand. And nurse Diane was so helpful and communicative post procedure as well. My loved one felt in good hands and received great care at this facility. It's an older building but very clean and the staff are efficient. 5/5 for professionalism and bedside manner from all the staff. Thanks!

Excellent experience from start to finish. The doctor thoroughly reviewed all the preparation steps…read morebefore the procedure and made sure I knew exactly what to expect. The staff was friendly, professional, and made me feel comfortable throughout the visit. Everything was well organized, and I received outstanding care. Highly recommend!

I recently went to see Dr. Yoo for a colonoscopy. I found him through my insurance company website…read moreand saw that he was located nearby in Rowland Heights. When I called to make my appointment, I found out that Dr. Yoo moved his practice to a new building in Diamond Bar as of March 2024. Dr. Yoo's new office is located in the newly renovated Diamond Bar Medical Plaza, which was previously a Chuck E. Cheese (if you all were in the area when that was around). Looks like they are still in construction, as a couple offices are still vacant with plastic on the glass windows. The staff I encountered all very friendly and nice. Dr. Yoo was professional and clearly explained the process and indicated what I needed to do to prep for my procedure. I came in on a Monday and the front staff was able to fit me into an appointment on Thursday due to a last minute cancellation. This kind of procedure is not fun, but the entire staff made me feel comfortable the entire time, and the nurse who attended to me was so nice, I felt like my mom was taking care of me. =) She made sure I had extra blankets because I was cold and came by a couple times to made sure my IV was ok. I got a call the day after to follow up and see how I was feeling and if I was experiencing any issues. I appreciate the check in even though I was feeling good! I highly recommend Dr. Yoo if you need an gastroenterologist.

Dr. Sajen Mathews is the BEST Gastroenterologist I have ever met!! You need a doctor like him:…read morepersonable, thorough, knowledgeable, and of course, highly experienced!!!! He has diagnosed and treated many of my family members, too. Dr. Mathews is in such high demand and it seriously took me 2.5 months to secure an appointment with him!!! Worth the wait and I am beyond grateful for his expertise!! He might be able to see you sooner if it's a serious life threatening issue, but best to call his office and inquire.

Last time I checked doctors need to physically exam patients in order to properly diagnosis. So you…read morecan imagine my surprise that Dr. Matthews isn't seeing patients and will only do phone calls. I've currently been on hold for 15minutes!! Oh and did I say they NEVER called to share test results done over a month ago. Let me save you time and energy, don't pick Dr. Matthews. Well at this point don't pick St.Judes

I write this review with immense gratitude for dr. Patel. After being very sick for several months…read moremy symptoms became increasingly worse and debilitating. Not knowing where to turn or whom to trust, thankfully a dear friend referred me to Dr. Patel. During my first appointment, Dr. Patel listened carefully to my concerns and understood that I was not only in severe pain but also nervous about being in a doctor's office. She quickly put me at rest with her compassionate and positive bedside manner. After her very thorough examination, she scheduled multiple tests. These tests identified serious but treatable GI issues, a hormonal imbalance, and a large ulcer that I was completely unaware of. Within a short time after starting treatment I was a newer better version of myself. Now, months later, I continue to improve and truly appreciate Dr. Patel for her incredible ability and willingness to address my medical issues.

After suffering with a very difficult bout of IBS for 10 weeks and not getting answers or help from…read moretwo doctors, I found Dr. Patel, who gave me LOTs of HOPE, along with important information re: my health problems, meds and supplements. She understood how exhausted I was and showed me warm caring as well, which I appreciated! The endoscopy she suggested went very smoothly, with her by my side to answer my questions, beforehand and afterwards. Since my two visits, I've called her office with questions to her medical assistant, Precious, and I received answers from Dr. Patel within a day as well as a personal reply from her via email. Though she is listed here with a Tustin, CA office, she has a Mission Viejo office as well--it's very convenient for me!

I had my initial consultation with Dr. Hardeep Singh about a week ago and was incredibly impressed…read moreby his excellent bedside manner and utmost professionalism. The front office made the entire process incredibly seamless, and I was able to secure an appointment within just one week. They provided crystal-clear instructions for my colonoscopy prep, which I completed the day prior. The procedure itself took place at a convenient facility just down the street. Although they were quite busy on the day of my procedure, resulting in a slightly longer visit, the efficiency, care, and dedication of the entire team were outstanding. They are a highly professional and compassionate group, and I highly recommend them. Thank you so much to Dr. Singh and his wonderful staff!

I had such a great experience with Dr. Singh. He was kind, thorough, very professional and answered…read moreall my questions at my consultation. I was able to get my colonoscopy within a week and everything went smoothly. He had excellent bedside manner and was extremely kind and professional again. His staff was also great.