Center Lake Ontario recently started taking patients on Sunday and what a wonderful thing. I did not have to request time off from work. I was able to schedule my appointment quickly and get in there for my procedures. I had exams that are typically "scary" but the technician-Jasmine was so patient and kind, too her time, reassuring me and giving me options if I got too anxious. From the minute I walked in on Sunday the receptionist Cindy was pleasant and accommodating to all my needs. I've used this location many times in the past but this time I felt I needed to compliment Cindy and Jasmine who were exceptional and to highlight the benefits of the weekend schedule! read more

No one answers the phone. Called for three days with no response. Only way to speak to a human is contacting billing who just relays the message to call back. Negligent customer service and horrible for those with medical necessity. Would never recommend. . read more

I went to the center in Chino and was informed that none of the Center Lake facilities are equipped with beds that have stirrups. Unacceptable! As if women don't already put up with enough nonsense when we go for medical treatments! You are an imaging center! you treat women! get beds that are the proper equipment for doing the imaging on women. IF YOU ARE A WOMAN DO NOT GO TO ANY CENTER LAKE FACILITY! The tech, who was great, tried to balance me on a pillow and was not able to get proper imaging after all that pain and discomfort. read more

UPDATE 8/4/26: *****BEWARE!!!!! YOUR INFORMATION IS NOT SAFE WITH THEM!!!!***** I still went despite the debacle (see below) because Claudia's supervisor, Carmen, apologized, had Claudia call me to apologize, and she was able to request my records directly from my previous healthcare provider. After the visit, Centrelake Imaging sent me a link to set up my patient portal account. I was instructed to click the link and simply create a password to activate my own account. Instead, when I logged in, the account already contained another patient's protected health information. I was able to view this patient's full name, date of birth, home address, home phone number, mobile phone number, insurance information, and medical records dating back to 2008. This is a clear disclosure of another individual's PHI to the wrong person due to Centrelake's failure to properly provision patient portal accounts. Additionally, I still do not have access to my own health information through the portal -- my account was never correctly set up for me. I have reported the violation to the US Department of Health and Human Services. 1 star. Save yourself the headache. If I could give negative stars, I would. As a new patient trying to establish care with a new PCP, I was told to email my prior mammogram report -- simple enough, except the office gave me the WRONG email address. Three separate times. Three separate calls to follow up, each time told "oh, that's not it, try this one." I was handing over my personal medical history to random inboxes because their own staff couldn't get their act together. On the third round, an agent finally said just bring the report to my appointment. Fine. Then, the day before my appointment, a reminder call informs me I now need the actual mammogram images too -- something I have never seen or been given a copy of in my life. When I asked whether it made sense to jeopardize my care over a technicality when I had a full written report in hand, the agent escalated me to her supervisor, "Claudia." That's when things went from frustrating to genuinely unacceptable. I opened by saying I was venting because the whole process had been a mess. Claudia interrupted me -- repeatedly -- talking over me every time I tried to finish a sentence, telling me to "just listen to her." When I pushed back, she raised her voice and told me flat out that she did not have to listen to me. A supervisor. Raising her voice at a new patient. Refusing to let me speak. This isn't a one-off bad day -- it's a pattern: wrong information, no accountability, and a "supervisor" who thinks yelling over patients is an acceptable customer service strategy. Now I understand why this place has such a low rating. Do yourself a favor and find a practice that treats new patients like human beings. read more

This is my 2nd appointment canceled while in the waiting. The first time the tech was so late that I eventually had to leave. Today, I was scheduled for a 5:45 am appointment at approximately 6:30am I was informed that the tech had an emergency and would not be in, I need to reschedule. Very inconsiderate, irresponsible and unprofessional. read more

I would give negative stars if I could. They rescheduled me 3 times then just canceled my appointment. They lied and said they were waiting for pre authorization from my insurance. I don't need it, I spoke with insurance. I even 3 way called with insurance and center lake and they still wouldn't schedule me even though my insurance company told them repeatedly I didn't need preauthorization. Carmen a director has horrible customer service and needs to be fired for her attitude. Never will use this company again. Stay away and go anywhere else. They are liars, i will Never use them again. They need to do better. read more

Hello. I have called over 10 times, in different timing and still no one has answered my call at all. I was calling them to just confirm my appointment and everytime I called them, I wait over 20 minutes and still no one answers at all... I'm not sure how there are workers there and no one answers phone call... very bad experience that still till now, I cannot confirm my appointment so I think just best bet if ever wanna confirm appointment, you must go to office in person and ask for that because they will never answer you nor give you a reminder of your upcoming appointment. Be aware everyone and spread the word if experience the same problem. Thank you!! :)) read more

Centrelake Imaging & Oncology - Phone call to the centerlake office with over 29 minute wait time no response. - Diagnostic Imaging Near Me - Ontario, California

I love it here it's clean especially the one that does the ultra sound kidneys and stomach she is thee Best

I have been coming to the Chino and Ontario location for years and it has always been consistently excellent service! I don't know who does the hiring for this company, but they are the best at finding caring, knowledgeable, employees! read more

Very frustating experience. No one answer the phone, messages aren't returned, and my appointment time was changed without notice. Communication and customer service were extremely poor. Patients deserve better responsiveness and basic courtesy, especialy for medical appointments. read more

This review is not specifically about the Ontario location. It is a breif ac ount of my last experience. I have an appt. today but I didn't to confirm purpose to driving out there. I canned the Chino location over 7 times, going through every possible option and could not speak to anyone or even leave a message. I them called 3 more locations multiple times until finally getting someone at the Ontario location. I have to say this was just ridiculous. Had to make over 14 calls to get a hold of one person to confirm an appt. read more

Drove my father in for his appointment, staff was very supportive both in person and over the phone. Per usual doctor visits come with some wait time before coming in to see the doctor but everything was great. This location is very clean. All in all I'd recommend this office, I'm huge on customer service and they did amazing! read more

Last minute cancellation. Wrong scheduling. Terrible service. Would not recommend them. Would not use them.

I was on hold for close to 30 minutes - transferred over. I wanted to make an appointment and was told that I needed to email the requisition & then call back tomorrow. I was already on-hold, and when I told her I could email the document right now. I asked for her name, she hung up on me and I went directly into their survey. Unprofessional, rude and shouldn't be representing the office on phones as she is the first BAD impression that the patient sees. Will share this with the referring doctor. Doctors should consider reviews where they're forwarding business to this group. read more

I am writing this review from the waiting room of this facility. I had a CT scan scheduled for 1 p.m. and was told to arrive 15 minutes early to complete paperwork. It is now 2:25 p.m. and they still haven't even called me in. This is unacceptable, especially since I was told I needed to fast so I've had no food or water all day. All this after I was originally supposed to have an MRI which I scheduled 2 weeks prior, only for them to call me the day before and cancel it. The only positive about this place is the girls at the front desk are nice and professional. This is the place my insurance approved, otherwise I would not have come here. read more

Doctor referred my wife here in 2023 for a 3D scan (specifically 3D on the work order). Centerlake Ontario didn't have a 3D scanner so ignored the doctors order and used a standard 2d scanner. Doctor rejected the scan, re-requesting the 3d scan. Centerlake said their only 3D machine was in Anaheim but they agreed to rescan at no additional charge. My wife and I took another day off (without pay) and made the drive all the way to Anaheim. Centerlake then sent a bill! I called them, they apologized and said there would be no further charge. Over 2 years later we just received a collections notice from a debt collector! Can you believe it?! read more

I have been to the office in Ontario twice for a mammo. The first time, no one greeted me at the front desk, I felt like I was an imposition just being there. Then they kept me waiting way past my appt time to eventually tell me the mammo machine was not working. And then blamed that on Covid....4 years after Covid hit! The 2nd time was a reschedule of that fiasco, again the front desk was less than welcoming. I was asking to undress for the procedure in a tiny room that opened directly in to an office area where some dude was working. Uncomfortable! THEN during the procedure the machine stopped working! Damn you Covid! never going back. read more

I've been to this location twice in the last year for an MRI and both times were absolutely exceptional! All the staff are super helpful, friendly and patient. They went above and beyond to ensure I was comfortable during the scans and that I had immediate access to my results. read more

I made an appointment weeks in advance and took off work only to have them leave a message the night before to say they had cancelled my appointment because they never heard back from my insurance for pre certification. 1. They had weeks to get it done, and that's literally their job 2. and most importantly, my insurance plan doesn't require pre certification. Total incompetence! read more

This place is the worse place ever!! Had 8:15am appointment. Then was told at 8:45 the technician was not going to be here till 9am. WTH!! This appointment was for last week, which this place called me the day before canceling and rescheduling it for today. Now I'm having to wait and there are two people a head of me!! Unacceptable!!! They don't even deserve one star. read more

Again. Got a call for my 3rd rescheduled appt to reschedule again because there will not be a tech.

I spent almost an hour on the phone trying to get an answer, but after about 20 minutes on hold, it disconnected. I tried three times before I finally gave up. This place is incompetent. They are difficult to work with. And when I finally did get in for my test, the person in front of me was told, "Sorry, we have to reschedule. Our machine is broken." They rescheduled her almost a month out. read more

I really can't believe this place is still in business. I was waiting on hold for 25 min to talk to someone to confirm my appt for tomorrow and no one ever came on . Never got a call,text or an email to confirm my appt. I'm only going to this place cause my insurance covers it. I will never go here again. I'm going to have my insurance change company too. Bad business... read more

I arrived at 8:01AM which was before my appt and was told by the person at the front desk that they do not have X-Rays today as it is blocked out. They only take Saturday X-Rays every other Saturday. I then asked the girl at the desk, why they did not call when you all knew this prior to today and and that you guys were scheduling me over the phone... She said, "I DID NOT SCHEDULE YOU !" I replied , I said, you guys" (I knew this office visit was going South with reply reply). She would not reply on why no call was were made to me when the Appt clearly has a "X-Ray" noted on it (per Supervisor on Monday). I then asked for a note on my showing up and reference #, but she replied that we don't do that. I asked for the Supervisor or Mgr..., She replied that only Tech's on in the office. I asked for someone to come and talk to me as I will be outside. To make it short.. - No one came to talk - No one called me - Had to call back three times on Monday via the scheduling team to get a person and report this, with a follow up to me by end of day. But 4 days later, no call. - I called my Dr and Medical group and reporting this company and to take notice of the many reporting regarding this Ontario office. read more

My girlfriend has had two appointments cancelled first over all we live 1 hour away and we show up and get told their machine doesn't work now today is 5/23/25 and once again now theirs no technician all these centerlake places have terrible reviews and service if theirs no technician then what's the point on being open . -Ultrasound read more

Does anybody ever pick up the phone here or is it just a forever hold??? How does anybody schedule anything?

Update- As I await finding out my biopsy results for breast cancer I blame Center lake for blowing me off and cancelling my appointments for 12 weeks. Their delays could very well have cost me time in earlier detection. This company should be shut down. read more

I've been trying to schedule an appointment for an MRI. First of all; the online appointment scheduling tool doesn't work at all! After entering all the required information and clicking "submit", nothing happens. I've tried at least six times to schedule an appointment using the phone system with no success. Each time I was on hold for at least 20 minutes without being able to connect with a representative. One time after being on hold for 26 minutes, I was transferred to a voice mail inbox and was greeted with "sorry, this mailbox is full, goodbye!". The same thing happened when I selected the leave a message option from the automated phone option menu. This is, by far, the WORST experience I've ever had trying to schedule a medical procedure! Also, I've noticed that those supposed responses from "Mike M" are just automated auto replies that mean absolutely nothing! You can see that all of the responses are worded exactly the same. I just tried again today to get through to schedule an appointment with no success. RIDICULOUS! read more

Horrible customer service. Was on the phone for over 30min and then customer service picked up and ended the call. Called about 3 more times and similar situations and still couldn't set anything up. read more

Out of your 10 southern California locations this company only has 2 locations with a Petscan!! Downey has no technician. Ontario's machine broke in July 2023 and my mom's appointment was cancelled. Rescheduled for tomorrow August 3rd. And just got a phone called from the Ontario location that there will be no technician tomorrow and they were cancelling her appointment again. This is outrageous, unsympathetic, uncaring and a dangerous company who treats cancer patients as unworthy human beings. Cancer is a serious disease that deserves immediate care for patients in need of living. What kind of company treats cancer patients as if they just have a cold!!! I will be reporting this company to the BBB, social media and every other possible outlet of this haines uncaring behavior by this Centrelake company. read more

Centrelake Imaging & Oncology - Downey location has no technician for months now!!! This is absurd company behavior. - Diagnostic Imaging Near Me - Ontario, California

Where to begin if I could give a negative star I would. Scheduling an appointment is a joke. It took me a few days to finally reach someone. Phones just ring then get disconnected I was scheduling a mammogram along with a breast ultrasound and the person told me I did not need an ultrasound so she will not schedule me. Hold on since when are you my doctor? If my Dr ordered both a mammogram and ultrasound who is she to tell me I didn't need one? I then Scheduled for Ontario only to be told day before it was scheduled in chino. I have been coming here for years but the last year or so centrelake has gone downhill. Thank goodness for PPO insurance I can and will go elsewhere Do better Centrelake I remember a few scheduling gals who were so helpful went above and beyond to help me Lucia, Ramona and Sofia I think were the names where are they so I can go there read more

Today, Monday, April 29th at about 4:10pm, several attempts to contact this office was futile. The receptionist hangs up and refuses to assist us. It's a stark reminder that this place is unprofessional and has lazy receptionists. No wonder it has a two n half star rating. To the management of this office, it's your responsibility to manage or hire competent personnel to reflect your organization's mission and customer service. UNACCEPTABLE read more

I have called this place for 4 weeks to get an appointment and no one answers. It rings, puts you on hold, and rings. It doesn't matter what time of day or day of the week. I even sent a fax and have a confirmation of receipt asking they contact me, but of course, that would require someone who cares. Now I try to schedule online and it says my form can't be submitted. I was told since I have Optum, I can't go to Grove but only here. I have breast cancer in my family. I'm lost and frustrated! read more

I have been calling for two days to schedule a MRI. On hold for 10-15 min, then sends you to voicemail which is full. Two days!!! How do you stay in business? I guess people just die waiting on a MRI. My doctor had this approved urgently which doesn't matter now if no one ever answers the phone. Thank goodness I work for the largest insurance company in the US. I will be letting them know. Hopefully they can refer me to another imaging center. As I'm writing this I am waiting for someone to pick up the phone. Hire some staff!!! The online appointments are a joke. read more

Great service with x-ray imaging. Unfortunately, the TV in the lobby is set to the news and my entire time in the waiting room was a political rally for one candidate. I'm sure that particular candidate pleases a lot of people but I don't feel a medical office is the right place to hear either pro or against. Even if it were my preferred candidate on tv, I'm mindful that other people in the waiting room might not be comfortable. It was the very unpleasant. read more

Absolutely ridiculous that one is on hold for over 40 minutes to schedule an appointment and the hold process starts all over again!!! This is extremely unprofessional and unacceptable. read more

Centrelake Imaging & Oncology - Amount of time on hold to schedule an appointment - Diagnostic Imaging Near Me - Ontario, California

Wish I could leave a zero star rating because I cannot even get an appointment. Will be reporting this clinic to the medical board and to Medicare since they determine who can stay in practice and be part of insurance plans. No one answers and it seems to be a constant issue. How anyone could reply to these complaints without actually addressing the issue is embarrassing. My insurance referred me to you but I do not think they know how bad your customer service, patient service, truly is. Don't reply to me, just fix your damn issues. read more

Trying to schedule an appointment has been painful. After the 3rd call, a receptionist picked up, asked a few questions and put me back into the hold queue. Also, submit a form online, but didn't get a confirmation email or any info regarding an appointment. Good luck trying to schedule anything at this place read more

Came in for an x-ray, which is a walk in basis only. When I asked how long the wait would be, I was told there was 2 people ahead of me so it would be about 30 minute wait. I actually ended up waiting 1hr and 30 minutes. I understand that it's a walk in basis and there will be a wait but I'm upset that they did http set realistic expectations for the wait time. If you end up going here, just be aware that the wait can take 3x longer. read more

If i could give zero stars I would the man who helped my daughter was very unprofessional almost didn't even do the xray bc he didn't even try until I said something I left very upset can't believe this experience ...I must say the ladies in front desk were nice . You should hire better techs read more