WARNING! If you are with Kaiser and need/want to get a colonoscopy, as they are months behind for…read morescheduling (in Mar of 2026 they advised Oct first available appt), DO NOT ALLOW them to refer you to their contracted provider for colonoscopies United Surgery Center in Orange, CA at 1140 W La Veta Avenue, Suite 550, as the staff there is incompetent and only values their schedule and time, not the patients'. As Michael in Irvine back on Nov 6, 2024 posted his review on yelp, when they called me for the pre-op, at the end of the call the person advised me, "we'll see you at 11am" on Fri Mar 6 when my initial appt was for 12:45pm and I had already had my wife make arrangements to take work off that afternoon as driver is required. I advised the person of that and got no sorry and let her know that if there was a problem I would get back and so ok, I would plan to now arrive at 11am as instructed. So, my wife now had to go back to her boss and request to get off earlier, which he is nice so of course allowed her to. I called early that Friday morning as up early to complete my work for my job before showering and departing to make the 11am on time and they confirmed yes, you are still on for 11am. Upon my arrival at around 10:45am, when I walked into the waiting room, it was jam packed and I even stated out loud, "Wow, this is a lot of people ahead of me for my 11am appt." I sat in the waiting room watching the time pass, 11:30am, noon, and at 12:30pm I asked the receptionist Vanessa who the only nice person there what the heck is going on here? I called my wife who asked, are you ready for pick up as she was expecting the nurse!" When I advised her I was still in the waiting room she got upset with me as waiting in the parking lot next door as expected a 30 min procedure when she could have gone home and done some other things, wasting her time. At around 1pm I asked Vanessa who was in charge of the scheduling and she advised Janelle the nurse. I asked Vanessa to please have Janelle come and speak to me in the waiting area immediately. Janelle opened the door and asked me what do I need as if she had no clue about why I was summoning her! I asked her, "How much longer are you going to keep me waiting, my appt was pulled in to 11am from 12:45am without my approval and now its past that time". No apology, Janelle looked at me with a snide look on her face and advised me, oh we called you to push the 11am back out. I advised her no you did not as I was up early and on my phone and would not have missed that and so I pulled out my phone and yes, they had called me, at 10:06 am, less than one hour before my appt and I had missed due to being in the shower to be on time at 11am. I told her, "no, you don't pull someone in without approval/prior notification and then call less than an hour before and try to push them back out, this is RIDICULOUS!" Still no apology or advising she agreed, and back to the waiting room for another half hour or more. At this point I was upset as now wondering how late they could be before the 3 liters of liquid crap I drank the night before and another liter in the morning to the strict timelines on the pre op instructions would no longer be effective and they would need to reschedule me. They finally took me back to get my gown on and put the iv in me in preparation for the procedure around 1:30pm and I fell asleep waiting...When I awoke at around 3pm and no one around, I was getting angrier by the moment as I had planned after the surgery to go to jersey Mike's for lunch and then watch the Sharks hockey game that evening at 5pm. I yelled out for someone to come and Janelle came and I advised her to please call my wife and let her know I still not taken into the procedure yet. She did begrudgingly and I could hear my wife through the phone say "you have to be kidding me!" I was finally wheeled into the pole position at around 4pm and not taken into the operating room until about 4:30pm and I told the doctor and nurse who asked me "how are you doing?" to spare me the pleasantries, that I was pissed at them ruining my entire day over what should have been a 30 min procedure and when I asked who was the anesthesiologist a man advised me I'm not an anesthesiologist but will be taking the doctor's orders on administering which another red flag. To add insult to injury the doctor advised me he not making enough $ to which I should have said "shut up dude, you probably make 3 times more than everyone on your incompetent staff" but did not as just wanted to get the procedure done and go home. After the procedure they dressed me and I don't even remember coming to until I was in my wife's car as no doubt they were so embarrassed about what they put me through that day they didn't want me to come to and give them some choice parting words. When the post op nurse called me the next week to ask how I was doing, I asked her, "were you there Friday?" Still no apology or confirming they will change.