Review for Ms. Nancy Diaz and Quest Diagnostics, 2250 S. Main St., Corona, CA Ms. Nancy Diaz is truly exceptional. She is caring, gentle, and very professional. Her warm and calm manner immediately puts you at ease, and she works with such confidence and skill that the entire experience feels comfortable from start to finish. I appreciated how kind she was and how she explained everything clearly. She is outstanding at what she does. This Quest location is also excellent. It is very clean, organized, and efficiently run. Because appointments are required, there is essentially no wait time. Check-in is quick, and you are seen almost immediately. The whole process is smooth and respectful of your time. Quest is very fortunate to have Ms. Nancy Diaz caring for patients at this location. I highly recommend this office. read more

The staff is friendly and made my experience pain free she gave excellent service made sure I did not feel needle pain. Bloodwork was done without knowing it was done. read more

If you want to get stabbed a bunch of time by people who don't know what the bell they are doing then come to this location! I get blood work done regularly I've NEVER. Had a issue with someone finding a vein, I drink tons of water before I go for I know, 4 stabs later and a needle fishing in my arm for a vein the 2nd girl finally got one, now my arm is all messed up and I look like a druggie! These girls need to go back to school! read more

Quest Diagnostics - All the pokes marks and from them moving the needle back and forth in my arm. - Laboratory Testing Near Me - Corona, California

See all

I would give a -5 if I could. I came here for bloodwork around 2-3 months ago. I realized that only part of my bloodwork was done, so unfortunately I had to schedule another appointment. As a fellow healthcare worker, it's difficult to schedule time off to take care of our own health, so it's an inconvenience to have to come back due to a mistake. I returned to get my bloodwork done. Fully fasted. My appointment was for 1pm, but another one for 8:50 am opened up so I changed it to the sooner one. I asked the techs if I could be seen at my new appointment time. The techs that came out to answer never took accountability or provided helpful answers. They'd blame my doctor for "not sending in the order" or they'd blame me for "not checking in correctly." Finally, the tech that initially drew my blood the first time came out and I asked if I could be accommodated due to the mistake that was made on their end. This tech pretty much told me that she didn't make any mistakes or she only did what was generated on the computer. I know for a fact that my doctor did not only order a portion of the exams to be done. I remember clearly when she pulled up the orders on her monitor and I know my doctor sent the orders in bc i saw it on mychart too. This place is ridiculous. They don't take accountability. read more

Have been coming to this location for years. The last time, I wasn't able to click on the arrival link so I had to knock on the door and ask for help. By now, I'm over 10 minutes late and was put on the standby list. The tech said, it's my phone. Today, I had the same issue. I knocked on the door and asked if I could use the restroom b/c it was an emergency. I have chronic colitis and it truly was an emergency. LaTanya kept telling me to go down the hall, when I clearly stated it was an emergency. I also told her I can't check in and she told me I have to wait outside for someone to help me. Huh? There is no receptionist. Finally, a kinder, more professional tech asked what I needed after she let me use the restroom. I was just picking up a stool kit. They certainly don't make it easy for the disabled and elderly. May have to find a new lab. read more

Quest's Monopoly Mentality Is Failing Patients Quest Diagnostics has plenty of phlebotomists on site, yet none are designated to handle walk-ins--which is a major flaw in their system. Walk-in patients are treated like an inconvenience, even though bloodwork is often urgent and time-sensitive. Waiting three weeks for a fasting appointment is absurd when a simple adjustment in staffing could fix the issue. This is typical monopoly behavior. Quest positioned itself as the go-to provider, but in doing so, they've grown complacent--expecting business to come no matter how poor the experience is. Every patient deserves respect and access, appointment or not. This kind of disregard only opens the door for smaller, more customer-focused companies to step in and do it better. read more

Terrible experience. I was a walk in and knew I would have a wait. But after 1 hour wait realized that someone who came in well after me needed assistance from another person and I heard him say he had no appt. When they called him in I waited to speak to someone to inform them. She asked if I see my name on the list ( which I couldn't see from where I was sitting) informed them that I did not. ( she had the oh well ) attitude. Turns out 2 others were in my same situation. It would be nice to have them consider the future customer and revise their system but like most medical entities they won't and could give a dam so long as they are paid by ins companies. So to the customer be aware and make sure after signing in to ensure your registered to avoid the over 2 hour wait. read more

If you don't have an appointment plan on sitting and waiting 3+ hours. It is ridiculous

Zero customer service. When patients have trouble signing in thru their computer system there is no one to help. If you are able to catch an employee to request assistance, they avoid you and offer no assistance at all and do not offer suggestions for resolving your issue. While I was there on May 10, I witnessed 4 patients with this same issue as myself. Stay away from this location. It will be a waste of your time. read more

Quest Diagnostics - Lobby - Laboratory Testing Near Me - Corona, California

See all

I do not often give 1-star reviews. In most cases I prefer not to give a review at all if I have nothing nice to say, but I just can't stay quiet about Quest anymore. I'll admit out of the gate that I don't know what parts of the process this place is responsible for and what corporate is responsible for, so I'll just outline the entire awful process. First, I tried a walk-in because appointments were booked for a blood test I was supposed to get for weeks out. Well, I spent somewhere around 2 hours in their cramped, terrible little waiting room to no avail. Alright, I guess walk-ins aren't the best idea here - so next, I made a reservation and came back 3 WEEKS LATER. Did I mention they don't have staff to greet you? They have these little terminals and if you go in and 1 of the 2 is not broken or the screen isn't flickering, consider yourself lucky. Getting blood drawn was actually the only OK part. The staff was OK to me, and I'm told my veins are hard to miss, so I got off easy there. Then there's the billing - which is what "inspired" me to write this. I have been arguing with them about a bill - that BOTH of my on-file insurances have already agreed to pay for - for over a year now. First they were confused because I guess Quest doesn't train their employees on how to handle patients who have 2 insurances. After several months where I'd call each month and be told the issue was resolved, I'd get a new bill (read: the same bill) and start the process all over again. So I removed my secondary insurance for THEIR convenience, since the tests were so routine it'd all be covered by my primary anyway. Nope, guess how many bills I got where they billed my secondary and ONLY my secondary insurance? Not 1, but 2! So I had my primary literally call them to explain the situation. I was told it was resolved. Oh hey, it's my Quest anniversary and what do I get? Another bill. Billing the wrong insurance. Told it's past due. It echoes many other reviews on here, but sometimes I wonder how many hours of my life I have wasted trying to get them to do the thing they are supposed to have done from the start. As of now, the issue is STILL not resolved, and I'm not confident me dedicating more of my life to it on Monday is going to change that. I know not everybody has a choice in where they get their blood drawn, but if you can avoid this place I highly recommend you at least try. Just... ugh. If I never go to another Quest again it'll be too soon! read more

I drove out to this location because I sent able to get an appointment locally. As I walked in I noticed they have a smaller waiting area so it seems more crowded because check-in area is by the door. I checked-in thru my mobile prior to walking in so after confirming my name was on the screen I took a seat. I couldn't help but notice 7/9 people there didn't have appointments and they were all senior citizen some didn't speak English. Nancy, one of the phlebotomist was helping them all with the check-in process and making sure everyone was checked-in. She was very diligent and spoke to them with care. As soon as everyone was settled in she called me in. Drawing my blood was quick, she was very nice and I gave her compliments for treating everyone with dignity and respect. read more

Horrible customer service super Rude staff no empathy or professionalism. Diana and Nancy are the Rudest techs there they really need to have a reality check and take a class on patient care. The lab administration really need to Fire them they are going to lose alot of patients because they're so unprofessional and Rude! Diana argued with me because i got stuck in traffic and was about 6 min late after checking in on my phone. She was super aggressive towards me. Don't waste your time going there! read more

Quest Laboratory is great. The ladies are very nice! To be fast, make your appointment online. read more

Make an appointment... Wait times for walk-in's are long... Appointments are the way to go...

I scheduled my appointment in advance to drop off my test sample on 8/12/24. I arrived on time and checked in at the kiosk, but somehow I didn't receive any notification. They then told me to come back two hours later. I explained that I was just there to drop off a sample, but the staff member said I needed to return as a walk-in customer. This place is not recommended. read more

Terrible customer service, terrible wait times, confusing system and little to no human interaction. Only came for drop off and already waited a long period of time for pick up. The staff is rude and unhelpful. Talking under their breath and always in a rush to get away from patients. Waited 1.5 hours for a drop off. They prioritize appointments but still go completely out of order. The tech upgrades are not helpful and make it very confusing for older clients. read more

Made my appointment and only waited less than 10 minutes before being seen. To avoid long waits, it's always better to schedule ahead and be early or on time read more

Came here for routine blood work, Dr put the order in the computer. Got here, they say it's not in the computer! Leave, confirm the dr sent the order, got an Email from QUEST that the order is there. Make an appointment, come down, she can't find the order. This place sucks. And there's no manager or boss or anything!!! read more

My mother had come in today to have blood work done before her upcoming doctor appointment. She was informed by the cold, heartless, empathy lacking front desk lady that she could not do a walk in and that they are only accepting appointments. That's fine and completely understandable. My mother who speaks English as a second language and is not very tech savvy request assistance from the same cold, heartless, empathy lacking front desk lady. She would not help. She made my mother feel stupid she made my mother feel frustrated and hopeless because she wasn't helping her. All she did was repeat that it needs to be done online so that she's in the system. When my mom would ask her a question she answered with pure heartlessness. My mother called me on the verge of tears explaining the situation to me and I was disgusted and disappointed. And btw my mother is very sweet and if it wasn't for her I would have called and ripped you a new one just to make you feel as bad as you made my mother feel. To the front desk lady working 7/21/23 between 11am-12pm, if you hate your job then quit. You are in the business of helping people not making them feel worse. She's already sick and anxious and going through a lot and all you did was make a woman feel helpless in a time where she needed help. read more

Couldn't get blood first two tries. Then got another employee who got blood on the first try thank goodness. Said problem was after shower this morning I had put lotion on which I always do and. This is the first time it has ever been noted as a problem. Told to always drink 8 glasses of water and never use lotion after a shower when getting a blood test. read more

After 3.5 hours of waiting, I was told they are running behind and we're not sure when they could see me. I was the 1st person on their walk in list for 2 hours... make an appointment or else. Lessons learned. read more

Made an appointment 2 days prior. Got a text message 20 minutes before my appointment saying to click on provided link when I arrive. When I arrived, I clicked on the link and checked in through my phone. I didn't even have to use their kiosk. I waited about 5 minutes before being called back. It is easy to make an appointment. I do not recommend going the stand-by route. Many had been there for many hours and could not be seen because everyone with appointments were keeping the staff busy. The place was clean and staff was thorough. read more

Literally the worst experience ever, employees were so rude, did not care and kicked us out after waiting for over a hour there is no employee to talk to! Avoid this location at all costs. read more

On time service. Nancy is always very polite, professional and pain free! I travel from Lake Arrowhead for all my bloodwork.

I can just say it's a terrible terrible organization policy I was there for urine test and they gave disgusting experience Don't go there ever ever read more

This particular location only. Totally rude personnel. They have zero customer service skills. I do not recommend this specific location. In short, they don't deserve my business and there are other locations with much better customer service. Terrible experience. read more

Don't come here. Drive the extra mile for another location with better service and quality employees. Yes I did arrive 20 min before they closed with three people ahead of me with appointments. They were quickly taken care of. Clearly they took for ever to not precede with me, they just wanted to go home on the dot. And they completely skipped me and called another walk in just because he was dropping off, when they made him wait 15 min! Doesn't matter of you have to stay longer to do paper work, that's your job, why even work there?! read more

Terrible customer service. Make sure to have an appointment. Staff does not care for any walk in patients at all.

2hrs wait and no one will try to help you. Worst customer service ever. No one to ask or talk to.

A one star review is being generous. Where do I begin. I visited this site on Feb 6th and they only performed 3 of the six tests ordered by my doctor. The phlebotomist severely bruised my arm and it was sore for over a week . I have good veins and have never had an issue in the past. Coincidently , my wife also got the same phlebotomist a few weeks prior and also had her arm bruised and was sore for over a week. I contacted Quest customer service to find out why the other 3 tests where not performed and waited over an hour for a response . Their response was that a supervisor would contact me. Two days later no call from supervisor . Called customer service again. This time they told me that they just did not perform the test and that I would need to schedule another appointment . Not sure why they did not tell me this the first time I called . Scheduled another appointment on Feb 28th and explained that they did not perform 3 of the tests requested from my doctor. The supervisor told me that she had left 2 messages , which is not true and showed her my call history on my phone . As luck would have it , I got the same phlebotomist as last time that bruised my arm. I told her the last time she drew my blood she bruised my arm and it was sore for a week. She very rudely asked if I wanted another phlebotomist and when I said yes , again very rudely and no apology ,told me to wait outside. Unfortunately, this collection site is one of the best of the worst with a 2.5 start rating as compared to other sites in this area with ratings of 1 and 2 stars. I will call my insurance company to see if they accept Lab Cor. You might want to consider doing the same and avoid Quest labs in the Corona area. read more

Absolute travesty of an establishment. Showed up for my employer sponsored test just to to be informed they don't have the test in stock. Lady told me to make another appointment and "hopefully" they have the test in stock. Tf kinda customer service is that. Avoid this place if you don't want to waste your time and resources read more

Did this location have a change in leadership?!! I've been coming here for years due to the location and while most phlebotomists are decently mannered...today has been a complete change!! I used to hear attitude tones calling people to come in and huffing impatiently waiting for elderly patients get out of their chairs. Today, every single one coming out has been so outgoing, polite, and sweet!! Whatever change was made was definitely a positive one!!! read more

Had scheduled an appointment and I missed it to get a employer drug screening done nowhere on the site. Does it say that they stopped doing it at 2:30 get there for walk in appointment wait an hour and a half when they call me back they told me they can't do the test. And continue to say that it was on the website that they don't do it past 2:30. Which it's not. DO NOT GO THERE. They treat you like a criminal for a simple employer requirement. read more

Zero stars. Horrible service. Nurse was rude. Completely unprofessional and embarrassed by the nurse.

I used to go to this locations years ago and then switched to LabCorp. A doctor specifically requested I use Quest for these labs and as I sit here waiting and waiting I now remember why I stopped coming here. First off - there is no more front desk to ask any questions only kiosks. Ok fine most places do this now. But the problem lies in when you try to ask one of the employees there a question they are very rude and have an attitude where they can not be bothered. There is literally so many other people in this waiting room trying to ask questions because let's be honest - the kiosks are not perfection and sometimes do not scan properly, or maybe a glitch in the system...regardless of whatever it is - these employees should be a bit nicer especially since most of us are fasting and would just like to get in and out with out any hiccups in the process. Quest you can do better than this. I've never had any issues with employees being rude at LabCorp and it is why I will continue to use that establishment versus Quest...and next time a doctor prefers Quest I will fight tooth and nail to not have to go here. Absolutely ridiculous how rude these employees are...and they are going to stick a needle in me....I shudder to think of the chair side service!! read more

Flat out one of the most incompetent companies that I've ever dealt with, it's unbelievable that they're not out of business. All I needed to do was schedule a test for myself & my boss in Corona, & one for another coworker in Pasadena. I wasted all morning, went to 2 locations, & was greeted with nothing other than incompetence, & the same business card with the useless automated system's phone number on it. Whether it's their completely useless automated phone system that just hangs up on you if you insist on speaking to a person, or their appointment time, which they were late for, or the fact that they wouldn't answer the phone to tell me to not waste my time coming in since they won't let me take the test w/o paperwork from my office first, or that they couldn't tell me what paperwork they needed in advance, or... You don't deserve my money, & I sincerely hope that my company sees how many man hours I wasted trying to get you to do your job, & switches to someone who is the opposite of you: capable & responsive. read more

The good part was that I had an appointment and they took me in within 5 minutes of checking in. The bad part was that the lady drawing blood poked one of my arms really bad with a needle and couldn't find my vein. So she then poked my other arm to try that side. Never had this problem before. Seemed like she didn't know what she was doing. Ended up leaving with bandages on both arms. The lady at the reception desk even felt sorry for me. I didn't say anything, she just looked at me with a bandage on each arm and apologized. read more

Quest Diagnostics - The pain of a nurse who can't find a vein. - Laboratory Testing Near Me - Corona, California

I took my daughter here this morning, and Mita drew her blood. She was so sweet and patient with her. In the past, my daughter has had bad experiences with getting her blood drawn, and this time she did great! Mita helped so much! Everyone we encountered there was kind and helpful. This is the Quest location I will be going to from now on. read more

Avoid this location if you can. Their system is not very efficient. I arrived as a walk in on a Saturday due to no available appointments. My doctor ordered a 3 hour glucose and since I work full-time I could not come in on a weekday. I looked up locations that were open on a Saturday and this particular location indicated they were open from 6 to 12. I arrived around 7 something but had a wait time of at least 2 hours. As I passed the 1 hour mark I notified one of the technicians that I was there for a 3 hour test and I was worried that I wouldn't be seen. She basically told me it would be hit or miss and I should maybe try another location during the week. I explained I only have the weekends available. She again reiterated there were others that were waiting longer than I had. When I was finally called back by another technician she said "oh no. We can't do this. This is a 3 hour test. We close at 12." She proceeded to state I should have notified someone earlier that I was there for a 3 hour test. Sigh. So basically I wasted my morning waiting in the waiting area just to be turned away. Note: while I was waiting, there were numerous people who were very upset and yelling at the workers. Apparently many people who had appointments were still waiting 45 minutes after their scheduled time. My advice: Just avoid this place altogether read more

This place needs some organization. It was very frustrating for the people on the stand by today and people who already have an appointment. I understand that some places can be super low staff and struggling to find replacement. Today they were giving priority to people who had an appointment totally understandable but they were behind filling the appointments that they had for the day on the other hand you had people who was waiting on the Stand by since 9:00 am and I was there until 1:30pm when a lady came up and told everybody that even tho you been waiting for a long time it wasn't a guarantee that they would take you. If they were struggling filling the appointments for the day why they don't stop taking stand by from the begging and being transparente about it. People were upset and yelling to the staff and I understand the frustration but the staff wasn't very helpful and they had a horrible attitude. read more