Hadn't been to a Doctor in years and got lucky with Dr. Chan. He is very friendly and…read moreunderstanding. Highly recommended!

Dr. Chan listens and takes action to help his clients. Good bedside manner and I'm happy that he is…read moremy doctor.

Just had my last appointment with Dr. Mossinger and am very upset with UCI making changes that do…read morenot coinside with Dr. Mossinger's practice. I will make sure to find where she lands and change my insurance if need be to make sure I stay with her. You are the best doctor I have ever had and I will not seek another. Thank you for not being tainted and keeping fresh, informative and updated with all your patients. Hang on, I think we are all coming with ya. Nancy.

Dr. Mossinger is the best doctor I had. She is very compassionate and she really cares about your…read moreneeds. I recommended her to everyone in my household . I love how she really cares about you and listens. She doesn't judge you about your appearance and she happy with for you on small achievements. I had doctors in the past that would tell me you're "obese" you need to lose weight. Dr. Mossinger cares about you and will encourage you not downgrade you. So receiving a mail that she will be leaving UCI saddens me. I will surely follow her and praying will accepts my insurance where ever she lands.

20+ years ago I heard neighbors talking outside my home about this amazing doctor, someone they…read moretruly trusted. When I asked the name of this doctor...they said Dr Franklin Lowe. I made an appointment that week and have never looked back. Dr Lowe is a compassionate, caring, person...not just an MD. When I first went to him the wait time was horrible, but since he is now concierge there is generally almost no wait time. His staff takes you back and does a pre-screen so that the time with Dr Lowe is on point. A word about his staff....they are excellent. They treat you like family and know you as an individual, not just a name on a file. Both my husband and I see Dr Lowe, love and respect him..... he is family to us. And has seen us through many crisis - some quiet serious with excellent results. His referrals to other doctors are impeccable..... the very best. To sum it up ......I'm having PT for a hip replacements and when I mentioned the name of my surgeon and Dr Lowe (my GP), the therapist said...."you've got the best", this is also what I'm told when ever I mention Dr Lowe's name in the local medical community. Thank you sir for 20+ years of care and good health at age 80.

My husband has been a patient of Dr. Lowe since he was a little, and recent years I have been going…read morewith him to Dr. Lowe for his visits since we moved back to SoCal. Every time we turned to Dr Lowe, we know he is gonna take care of them for him and that he is in absolutely good hands. Only a doctor who truly cares about his patients would be this thorough and thoughtful in his diagnosis and treatment. Recently, I have experienced some health issues and was told to find a specialist by multiple physicians, however, the help from these physicians does not extend beyond their limited scopes. I could not even get any facetime with specialists for months. I turned to Dr. Lowe and became his patient with my husband's referral. He reassured me with his knowledge on the subject so I'm not as lost I was. He was able to get me tests and specialist appointments with a wait time of days!! This is truly amazing especially after seeing other physicians shrugging their shoulders at me for weeks.

I chose Dr Loomis as my PCP after getting on Medicare coverage. I had no health issues when I first…read moresaw her. After getting my lab results, she incorrectly diagnosed me as "Diabetic" even though it is common practice to have more that 3 high A1C readings before pronouncing that diagnosis. Frankly, she shocked me when she told me I was diabetic. She sent me to see her useless dietician, presumably so she could bill Medicare for these service. I did not authorize the dietician visits, not was I aware that she had to note me as "diabetic" in order for the services to be covered. I had to ask her to delete the diagnosis which I am not sure she ever did. This is not the first time she shocked or scared me. Later, she told me I needed to come in for fluids because my Sodium levels were low. When I rushed down, after cancelling other commitments, she said I did not need fluids after all, to just drink more water. The last straw was when she ordered labs tests that I found out from Quest, were "not medically necessary", and I ended up with a close to $500 bill. I worked with her office staff for 5 months (yes, 5 months!) to get this bill reduced. I never got an answer as to why she ordered 3 tests that were not deemed a medical necessity. One is supposed to sign a waiver when presented with a test or procedure that Medicare may not cover. I was never asked to sign the Medicare waiver. This sounds like malpractice to me. When I called the front office staff they would bounce me from one person to the next, wanting me to give the whole story over and over again. They would put me on hold for 10 or 20 minutes, no problem. The person I was working with, Brianna, was always "busy on another line", or "just stepped out". When I finally did speak with Brianna, she would say that she hadn't gotten around to my issue and to give her another month. She told me that the lab could not send me to collections for a long time. I finally just paid the lab bill to get this resolved and off of my desk. I would not recommend Dr Loomis or her staff or office to anyone looking to have a meaningful relationship with their primary care doctor. If this is how they treat me when I am basically healthy, what kind of care will they give when really needed. Save your time and find a competent, caring doctor.

I felt the focus was on selling nutritional products. As an older woman doctor, I found her…read moreapathetic as was her staff. Changing my primary for sure.

I started coming here about three years ago and it really has been an excellent experience for me…read more Dr. Loomis has been so great. She has really helped me make some positive changes in my life. It's always a pleasant experience when I'm in her office and I really believe I'm getting top-notch care. Not only does she provide excellent medical care. She also focuses on diet and exercise. It's more than just you need to eat better but she explains things and has a nutritionist available. I'm so happy that I found her. She has become our family doctor and we are all so happy about it.

Uncaring doctor, lazy and not kind office assistants, I had to call 5 times to get correct…read moreprescriptions, It was approved already however they asked to call insurance, they blamed pharmacy. Basically Dr. Loomis forgot to specify the units for prescription. I had to call 4 more times to fix it. I will not recommend, I recommended my wife to her she wasted over $200 for useless dietician. They are trying to make more money other than your health.

Dr Olson did my knee replacement surgery on Oct of this year…read more I am very happy with the way everything worked out. Things healed up fantastic Thank you again...

This doctor seems to have issues with his memory or he's faking it who knows. Been waiting for him…read moreand his staff to get my prescription for over a month so far nothing. Even though they get paid by my insurance. Some of his staff is great and some are not. His nurse rude and a liar jessie who try's to bully you and put words in your mouth. I ask to speak directly to the Dr. I get his so called nurse. I don't know how much clearer do I need to get! LIAR, LAZY, very unprofessional. During the pandemic they were playing games with my life. I needed certain diabetic medications and this is the experience I went through. He and his staff are not friendly and there very rude and don't deserve anyone as a customer.

Dr.Sleep is absolutely the best! She really cares that her patients get the best care possible. I…read morehighly recommend her! The staff is very friendly and her nurse Terri is great at her job and the best at drawing blood.

If you are able to be under Dr. Sleep's care, consider yourself extremely lucky. She has the best…read morebedside manner, listens and takes her time and does not disregard or dismiss your questions or concerns. She has a phenomenal personality that makes her very approachable which makes getting care a more pleasant experience than it typically is with other providers. Worth it, 100%

Dr. Backer is the best! I had to fire my previous Dr ( not with Optum)because she said she didn't…read morehave time to communicate with my oncologist. Dr Becker picked up the phone during my first visit and contacted my oncologist. He truly does care about his patients. Kassandra is amazing at helping with referrals, vitals and appointments. Ambrosia was friendly and make the check in process very pleasant.

This has been the most incredibly frustrating experience ever. I am an RN so I understand that…read moreworking in healthcare is demanding and difficult, however, what I've experienced is unacceptable. I made an appointment with dr. Chan 3 weeks ago to follow up about my thyroid (and an unrelated swollen lymph node). He ordered labs and two ultrasounds (one for my thyroid and one for the lymph node). I got the ultrasounds done the following week. The ultrasound of the neck/lymph node was uploaded into my chart as well as my labs. The thyroid ultrasound, however, was missing. Although I believe it is their job to follow up with the imaging center to get those missing ultrasounds, I took it upon myself to be proactive and get those images sent over to Optum. Finally both ultrasounds were uploaded into my chart. Still no call or anything from Dr. Chan or his assistant. I've sent messages in my chart asking if I can get a call regarding my results. No call, nothing . Only a message from Dr. Chan in the my chart app saying he is going to refer me to endocrinology and that his MA would contact me asap with that referral (still no peace of mind on my end...are my results concerning to him? No call, nothing clarity). Days go by and still no referral or call from either of them. I call Optum again and the call center lady said they would send a message over to them telling them to call me asap. Two more days go by still no call. I message again on the my chart app asking for that referral. All I get back is a screen shot from his MA of the different names and numbers for Optum's endocrinologist. No message. No context. Just a screen shot. I took that as "we referred you to these Optum endocrinologists" I call the seal beach office where the endocrinologist is located from her screen shot, and what do you know...they told me that dr. Chan didn't actually refer me to the endo.... I return to the my chart app messaging to let her know she didn't actually refer me to anyone. I call Optum again and get the same call center personal...the lady on the phone explains how it is unacceptable that no one could pick up the phone and just give me a call with my results and with referral information. She put me on hold said that she just talked to the office manager for Los Al and that the office manager would be calling me within the next 5 mins because what I've been through has been unacceptable.... Well, it's been 2 hours since that "5 mins" and still no call and their office is closed now. Absolutely ridiculous. I just need a referral to what seems like an "urgent" matter regarding my thyroid and I can't even get a 5 min phone call or response from my provider or his assistant...

It's been five years since I first came here, and I'm still frustrated with the practice. I…read moreabsolutely *love* Dr. Trivedi, who also works at this office, and I've asked to become his patient twice over the past five years. I had the chance to see Dr. Trivedi once when Dr. H was unavailable, and I was so impressed by his bedside manner that I requested to switch to him as my gastroenterologist. However, my request was denied after Dr. H's input citing that patients can't switch doctors within the practice. Their secretary staff are at least quick to comply with sending over medical records to my new gastroenterologist or other doctor's that may need my medical summary history performed by Dr. H. If you have the option, I highly recommend seeing Dr. Trivedi. My mother sees him, and two other doctors I know absolutely adore him as well. It's just unfortunate that I'm not allowed to be one of his patients!

I've been going to Dr. Hertz for years and she is awesome. Today I saw her PA Katherine Dodds and…read moreshe is amazing as well. She gave me all the time to go over questions and details of my care. I just felt she needed a shout out for excellent bedside manner. Don't be afraid to try this office for your GI care.

Great customer service. I called to inquire if they took my insurance. Unfortunately they do not…read more But Pauline ( I think that's her name) went above and beyond to help me find out. She called me back in a timely matter. I wish I could've been seen here!

Dr. Is amazing. I went in for stomach pain and found out I had appendicitis. Could've been a lot…read moreworse if I didn't get diagnosed and sent to the ER so quickly. My whole family goes here and the doctor and staff are lovely.