I had been in the market for medical insurance through Covered CA but the cheapest one I could…read morefind, that also allowed me to go to the doctors I had been going to for years, was a bit expensive. I decided to look into other options and did a search for places I could pay out of pocket. When I lived in Mexico, I had been using the services at a local hospital, paying a monthly membership fee for their services so imagine my surprise when I found out that the exact same system existed here. That was when I found Dr. Marisse so I booked an appointment. I found her originally on Zocdoc and the nearest appointment was in a month and a half. Within a day of making the appointment, I was called by the office to Nurse Shawna who wanted to make sure that I knew that all appointments needed a preliminary chat with the Doc, after which I could book my appointment. thanked me for letting her know that the next available appointment was that far away. It turned out there was a mix-up and that she did have more immediate appointments available. There is plenty of parking, as it is in shared parking lot with other businesses. However, there are two buildings with the same building number but with different locale numbers. Upper Echelon is in the building nearest to the AAA and the Farmer Boys. At the appointment, everything was clearly explained and we went over a sort of plan of attack, with regards to my concerns and what I needed to do. I appreciated paying less per month for the membership, which includes as many appointments as you want. The lab work and the tests are at wholesale prices so even with the membership fee and registration, all of this was cheaper than the plan I was going to get with insurance. What I appreciated was the quickness of getting an appointment. I have always hated waiting a few weeks, as a new patient, before actually being seen but I was able to book this within a week of the appointment. It was a week because their availability interfered with my work hours. Otherwise, I would have been seen earlier. All in all, it is pretty convenient and a wallet-friendly option. After that first appointment and the lab results came in, Dr. Marisse wrote a VERY long email detailing every point of concern. Which I appreciated because I went for answers and I was getting them. If you need a straightforward person to tell you what you need to be doing and not someone who has to be on your ass every step of the way, this is the ideal option. I would say the ONLY con is that they do not have appointments during the weekends. And since I work during the week, I have to take time off to go to an appointment.

I always have excellent experiences at Upper Echelon Medical Office in Fullerton. From the moment I…read morewalked in, everyone was welcoming, professional, and made me feel comfortable. A special thank you to Shawna and Karla--they went above and beyond to provide outstanding care. They were incredibly kind, attentive, and took the time to answer all of my questions without making me feel rushed. Their professionalism, compassion, and positive attitudes truly made a difference and turned what could have been a stressful visit into a great experience. It's rare to find a medical office where you feel genuinely cared for, and Shawna and Karla exceeded my expectations. I highly recommend Upper Echelon Medical Office to anyone looking for quality care and exceptional customer service. Thank you both for making my visit such a positive one! Dr. Marisse is truly one of the best doctors I've ever had. She explains everything clearly, never makes you feel rushed, and always makes you feel like your health and well-being are her top priority. Her professionalism and caring attitude give me complete confidence in the care I receive. I highly recommend Dr. Marisse to anyone looking for an exceptional physician.

Avoid this doctor Kim, they are the worst, make sure to ask how much they will charge you prior to…read moredoing any check ups or treatments. For 1 day only, they charged 936 dollars, before insurance charges. My insurance was able to pay about half the price, but still it's an unreasonable amount. They denied telling me the prices, and I found out at the end the prices after my check up, and it was crazy. Make sure to triple check all the charges prior to taking any treatment. The lady on front will most likely tell you that they don't know the costs, since they need to check with your insurance first, so make sure to ask how much everything costs prior to insurance covering. It is a ridiculous amount that no one should pay for.

I originally chose Dr. Kim as my PCP because of the rave reviews he had on Yelp and on Google…read more Unfortunately, my experiences with him were less than stellar. At my first visit with him, he rushed me through my general physical and talked *at* me rather than *to* me. I tried to talk to him about what I thought was a food allergy, and after I described what I was experiencing, he said, "if those foods are bothering you, then just don't eat them." I was kind of baffled by that. "Yes, of course," I agreed,"but I'd like to know if I'm truly allergic or not." His response was: "I can send you to an allergist, but they're really not going to be able to test for that." I suggested seeing a GI doctor; but his response was the same: "Waste of time." Oh, and he did all of that at the top of his voice in a quiet office. Thanks. I appreciate a doctor that can tell me the truth without the sugar-coating; but after getting a second opinion (which suggested I do see a GI to *confirm*), it was clear that Dr. Kim really didn't have time for me. The only upside to seeing this doctor was his outstanding office staff. PS. St. Jude Medical Ctr charges for parking in 30 minute increments, which is just plain mean.

*Always on "vacation" *Never takes the time to really know…read morewhat's going on with you *Never gives any useful advice *NEVER FOLLOWS UP I've been a patient since I was kid and growing up I never liked the way Dr. Nitta conducted his visit it's like your in and out in 5 minutes and he doesn't even do a full on check up to see how things are. The nurses at the front desk are nice and have always been nice it's just this doctor like I don't know if he knows what he's doing or if he just simply doesn't care about people and it's sad because most if not all doctors are just in it for the business and not in it to too really take your health seriously and help you find out the best treatment/cure for whatever health condition you have. I'm tired of hearing "your okay" or "you'll be fine" like I'm not okay my body doesn't feel fine I'm in pain, I'm sick and what are you doing about it?? NOTHING.

4 stars for Dr. Nitta and 1 star for the office. If you want results, you need to basically harass…read morehis office staff, which I don't want to do. I have had an appointment 5 weeks in advance. They canceled 10 days before, so I called back, left a message, then another message with someone who said they'll call back. No call back. I called again and they said that have an opening in 6 weeks, but only a few spots; otherwise I'll have to wait much longer. This isn't the first time. Also, if you need a specialist or recommendation, it might take 2+ weeks for them to get back to you (with you calling at least 3 times to remind them). If they say they'll call you, never expect a call back. Dr. Nitta is great, always listens and does his best to help. I recommend him, but I can't jump over several hurdles to get an appointment, specialist or basic help anymore. I understand the office can be busy, but there is a difference in being busy and having an absolutely apathetic response to patients.

I'd recommend Dr Yoon to everyone! I've seen him numerous times thru the years & he's been very…read moreopen & honest with me. He's explained everything in terms that I can understand & stays on top of things. Any question I don't understand he repeats to me. His front office staff is very friendly too & his nurses are always there to help. The office is always very clean. Sending Thanks to everyone.

If you're looking for a trustworthy gastroenterologist, look no further than Dr Yoon. He has the…read moreexact temperament that you'd want in a specialist. Highly recommended.

I highly recommend Dr. Chung - she was fantastic in helping me with my egg freezing cycle this…read moremonth. She and her team at HRC Fertility Fullerton are all-stars. From the initial consult all the way to egg retrieval, Dr. Chung was very transparent about all the necessary steps and was available for my needs at each step of the way. I was pretty nervous at the beginning of the process, but Dr. Chung was great in helping me navigate and accomplish this journey with peace of mind. Above all, she is super friendly and approachable which made this process a lot less daunting. Thanks again to Dr. Chung for your amazing work and expertise!

Words can't fully express how grateful we are to Dr. Chung and the whole HRC family. They made this…read moreprocess easy and seamless. Dr. Chung and Priscilla my nurse coordinator was on top of it all and communicated the whole process each step of the way. If we had any questions or concerns they were there to listen and give us the answers or advice we needed. Even through the downs of IVF, Dr. Chung always encouraged us to keep our heads up and never give up. Thank you HRC and Dr. Chung for giving us this opportunity to become parents to our rainbow baby.

An amazing doctor! Very friendly and takes his time to listen to you. Very gentle. He doesn't rush…read moreyour appointment nor dismiss what you have to say or are feeling. Very knowledgable! I have followed him from Whittier to brea... He's been my doctor for over 5 years now and will continue to be until he retires! I will follow wherever he may choose to practice at.

I recently switched insurance and changed from a St. Jude medical group to a PIH medical group. I…read morechose Dr. Yung as my PCP. I am very happy with Dr. Yung. He is down to earth and has a great bedside manner. He didn't try to rush the visit like previous doctors I have been to. He's in a small office that is quiet with easy parking. The office staff was very friendly and I was able to get a same day appointment. I definitely recommend Dr. Yung.

I've been a patient of Dr. Kaw's for a long time, and something I noticed over the course of…read moreseveral visits was that he'd be very impatient and trying to get out of the room as soon as possible, almost like he's in a hurry and doesn't have time to listen to all your concerns. On several occasions it felt like he spent 3 to 5 minutes, and I believe his max is 10 minutes. I never felt like he truly cared about me as a patient; it feels like a McDonald's drive-thru. One day, I verbally expressed to him that I felt like he spent very little time with patients, and he lost his patience and became super furious saying that he felt insulted. He immediately kicked me out of his office. He should go into high frequency trading.

Dr. Kaw has been my primary physician for almost a decade since I moved to Fullerton. I switched…read moreto him after a bad experience with a St. Jude GP. What I like about Dr. Kaw is that it is easy to book an appointment with him and you don't have to wait for weeks on end like St. Jude. He quickly and accurately diagnoses any medical issues you may have and I appreciate his expedient, straightforward manner and friendly demeanor. His staff is also great as they are responsive on the phone and fill prescriptions quickly - sometimes while I'm still sitting in the office so that they're ready for pick up at CVS down the road after my appointments. He also went the extra mile in getting a prior authorization for meds approved from my insurance, who have been very challenging to deal with to say the least. If you're looking for a competent and reliable GP in North OC, give Dr. Kaw a call.

This hospital somehow always gets my billing wrong and I am charged when I go in for an annual…read morewellness check that should be fully covered by my insurance. This has happened TWICE with no effort to correct it. I end up on the phone for hours trying to resolve and the staff there are no helpful. It has been the most frustrating experience and I would never ever recommend this to anyone. I have never had to pay extra for wellness exams at other hospitals but somehow always end up with a bill here due to coding errors which they do not bother to fix

This review is for the office to donate blood .Stay away far far away this place is a joke they…read morejust keep taking people in all day long not caring how long you wait. First our paperwork said they open at 0730 and it's only walk in only no appointments So I arrived when they opened and already 25 people waiting and some had appointments I ask the gentleman at the office he said some of people make an appointment my chart but they don't tell you this when you call them. So if you walk in they just keep pushing your name back in line. After almost 2 hours I finally got in for a 3 min blood drawn . They should tell people when you check in it's going to be at least 2 hours and you will get pushed back by appointments first. It's like everyone that works in this office have and attitude and or unhappy no smiles at all maybe they shouldn't be working with people or they have been doing it so long they hate everyone. Just go somewhere else save your sanity

I really like st. Jude before, recently not su much and made me feel even stressed just to have…read moreappointments with them. This year, I changed my PCP from Jennifer Lu, MD to Angelina Sidharta MD. Since then, this becomes miserable experience with St.Jude. The 1st time, there's an opening and I scheduled appointments since my leg was in pain. That was happened on Friday and Monday I took day off since it was still in pain and Tuesday for doctor appointment. In the morning of the appointment, they called me if they need to cancel my appointment and reschedule. The been calling me since then to reschedule. How convenient for them! Today, they called me again. My husband and I have doctor appointments tomorrow and only within 24hrs they called and mentioned for my husband insurance if not assigned to Dr. Sidharta and need to reached if I don't have registrations changed notification from his insurance. I'm at work and this makes me crazy since I'm not able to work because of this whole situation. Only notified patient within 24hrs. How very convenient for them. The assistant name is Josiah, the one kept calling me. St. jude, I know you can do better.

RUDE!!!!! This office needs some serious customer service education. Keiava A. You are a liar. A…read moregrown woman who has to lie is pathetic. You never gave me any codes or anything to help me and then you make a fake note in mychart like I was the problem. I have a witness who was sitting next to me and heard the whole conversation. You ask if I verified with my insurance, I asked how to do that and you got rude and said you're just gonna schedule me and if it's not covered, it's not your problem. Rude! Rude! Rude!