I agree with the negative reviews! Have never given any reviews, but the bad experience prompted to write one. The so-called doctor is an arrogant old jerk. The staff is rude and incompetent! read more

If you want a doctor who treats health like a rigorous science experiment, Dr. Oh is the one. He is a rare MD/PhD who doesn't sugarcoat the facts; he presents the data and the risks with total clinical honesty. For 10 years, I refused statins, trying every alternative to manage my health. He was persistent and explained cases things went wrong and side effects were negligent. When my LDL hit a dangerous 195 mg/dL, Dr. Oh was blunt: the data showed I was on a path toward a stroke, and the risk simply wasn't worth it. I finally followed his advice and started a low 10mg dose. Just 3 months later, the results are historic: my LDL plummeted from 195 to 76, and my Total Cholesterol dropped from 264 to 144. Every metric is now in the normal range for the first time in two decades. I'm grateful for his persistence and his scientist's approach to my health. read more

Based on older reviews, it seems this hospital has purchased fake reviews. The doctor was extremely discriminatory and made me feel uncomfortable and disrespected read more

Dr. Oh is very arrogant. He didn't listen to me as a patient and always treated my questions like they weren't even happening. He never cared nor took any type of action to help. He told me to reschedule another appointment for annual check-up (it didn't have to do anything with my concern) in the front desk, and never suggested any recommendations regarding my concern. His type of care is just down in the dumps. Special thanks to Dr. Oh for making this experience the last in Oh Moon "Mock"! read more

My experience with Dr. Oh Moon Mock's practice was nothing short of five-star exceptional. I enthusiastically recommend his services. Dr. Oh Moon Mock, MD PhD, is an outstanding physician who provided me with excellent, attentive, and knowledgeable care. His expertise is evident, and I felt completely confident and well-cared for during my visit. What truly elevates this practice, however, is the front desk staff. Their behavior was exemplary--professional, incredibly helpful, and genuinely warm. They are the definition of excellent customer service. It made a significant difference and created a welcoming, stress-free environment. If you are looking for a doctor who combines top-tier medical knowledge, immigration medical exam with a dedicated, professional, and kind staff, look no further. This practice sets the standard for patient care! Best Md Saheb Ali read more

The Best Dr! Always listens to my concerns and gets me the help I need. Highly recommend Dr. Moon!

Dr. Oh and team are responsive and caring. For nearly 10 years Dr. Oh & team have cared for my father & mother. Through dementia & general aging process, have been very supportive. Highly recommend. Especially helpful family prefers Korean language practitioner and staff. read more

Dr. Oh is my mom's PCP. He is wonderful, super knowledgeable, often busy (but tbh which doctor isn't) and thorough. Even though I like him, I think I may like his front desk staff more. I LOVE that when you call, a real person picks up after a few rings -- no automated system trying to transfer you to somewhere and ultimately sending you to leave a voicemail nonsense. They are the best office staff I've dealt with -- and my mom is a disabled person and has 6 different doctors and surgeons. read more

The office is clean. The receptionists are very nice and friendly. Nurses are well organized and seem to know what they were doing. The entire staffs seem perfectly bilingual (English and Korean). This is good for people who speak Korean only. I saw a lot of old Korean patients, who require often, routine visits. Dr. Oh is a very experienced and thorough doctor. He seems very knowledgeable for young and old patients. Even though he was very busy, he spent enough time asking questions to me and trying to answer all my questions thoroughly. I strongly recommend this office to anyone, specially Korean only speaking people. read more

So i used to come visit this doctor b/c he was the only one near me thats open on Saturday. However, that has now changed. I came here 4/28/23, and discovered they no longer open Sat. The Dr. himself will not listen to what you have to say, seriously. I came here a few years ago, b/c I needed fluconazole due to having oral thrush/candida. He told me he wont prescribe it to me b/c he doesn't see any in my mouth. I told him I have previously tested for it and it showed that I did. He wrote me a prescription for literally 3 tablets, didn't even get a capsule of them. He also made me take a sample b/c he didn't believe me, and said im too young to get it. After i got the results back, the results showed the same, that the culture taken was in fact candida. . A few years later, i came back asking for fluconazole again, and hes like who said you have candida? Im like dude, i came to you and you took my culture. And he literaly said i dont see it, its gone, and wouldn't prescribe me any. Like wtf? lol. He just prescibed me something else cuz he said my throat looks a little red. This dr will do the bare minimum i swear. His diagnosis to everyone is, advil and get more sleep, dont drink, but drink more water. read more

I think it's already been about 10 years since I went to this clinic. I went for a blood test today, and I always feel grateful to the friendly staff from the front of the clinic and the staff who contacted me in advance so that I wouldn't forget my appointment. Also, I am grateful that Dr. Oh kindly explained about the blood test. And always advice about good food and bad food, so I always live according to that advice, so I always seem to have good health. Thanks again to Dr. Oh. read more

My husband and I are very pleased with Dr. Oh Moonmock. He takes time to listen and carefully gives great directions to what to do and what to expect. He always follows through. Very grateful read more

My dad has been a patient with Dr. Oh for many years now, and Dr. Oh has always given my dad great professional care and medical guidance. My dad continues to stay healthy and have high energy despite having survived cancer and still having some other ongoing conditions, so I am very thankful for Dr. Oh and his care. Highly recommend! read more

Clean and respectful staff. Dr. Oh is very kind and tells it how it is. He is very helpful in dealing with health and setting goals.

I've been a patient of Dr. Oh for several years. Overall, he's caring and will take the time to explain in details. He patiently would discuss what cause the conditions, how to care for, and future reoccurrence prevention. His staff members are pretty nice and will try to schedule you in as soon as possible. All labs done at clinic are timely scanned and will be sent to your personal emIl. read more

I should have read the reviews of this doctor before I went. The doctor was ok but the office staff is very inconsistent and they have organizational issues. There are better organized doctors and doctors offices. I would stay away from this office as it's not a very efficient/organized place. read more

I have been in this office for almost 10 years. I went there recently, and they made an appointment as soon as possible so I could get treatment right away, and now I'm almost recovered. I highly recommend this office where all the staff are friendly and always do their best for patient convenience. read more

I'm really glad I found Dr. Oh locally and I strongly recommend his clinic. Dr. Oh seems experienced and knowledgeable. He was able to get to the root of my issue and issued me a reasonable treatment plan. I even referred my boss to this clinic and he has since spoken highly about his great experience as a patient there. The clinic staff is hospitable and I feel very taken care of whenever I visit. read more

최근에 한국과 일본 그리고 유타 솔트레잌에 6개월남짓 다녀 오면서 장기간 집을떠나서 여행를 하면서 여러 산들과 엘로스톤, 티톤, 글래시어, 아취 네션엘 팍등 여러 호수와 온천등 80 나이 가까이서 무리한 여행을 부부동반으로 하게돼었다. 2022년은 크리스마스때 집으로 돌아 올때까지 거의 얼바인의 집을 떠나 살게되었다. 그사이 코비드에 피부병에 엘러지와 당뇨, 혈압등 집사람병등 많은원치 않는 일들이 일어나곤했다. 그때마다 닥터 오가 아니였으면 먼곳에서 어땠을가 생각을 해본다. 장시간 상담과 긴전화에도 한번도 짜증없이 처방을 해주시지 않았다면 하고 가슴을 쓸어내린다. 나이가 많으면 지병과 잔병처리에 코비드도 타주에서 걸려서 고생도 많이했다. 지금 또 병원에 다녀오면서 너무 고마운 나머지 이글을 쓴다. 치과 병원도 의사를 잘 만나서 치아 전체가 아직도 온전히 내것으로 보전하게 된것도 모두 하나님의 은혜로 감사하면서 살고있다. read more

I am usually a happy, easy going person in nature and it takes a lot to get me mad. This doctor did it! He made me wait 45 minutes inside the room and when he came in he did not even bother to apologize! if anything he made me feel horrible about my blood pressure and other personal issues (the reason I was there). Do not go there. He is insensitive, rude and arrogant. This office is all about making money! read more

Dr. Oh has been our family doctor for several years now. Dr. Oh is an excellent physician. He is knowledgeable, professional, and caring. He took the time to listen to my concerns and provided me with the best possible care. I would highly recommend him to anyone looking for a great doctor. read more

Great front staff, that are communicative and efficient. The doctor is also great, taking time to explain.

My aunt and uncle have been seeing dr Oh for some time now. He is personable, thorough and very friendly. He cares for each patient. And I love the front desk who always tries to help in the friendliest way possible. read more

Doctor Oh go thru my result in detail explain each bills test therefore we understand what we can do to improve or what we did good at. I ever had doctor spent that much time on visit. read more

Outstanding Doctor and Staff. 5 years and counting I've been fortunate to schedule my yearly check ups and misc treatments w/ Dr Oh. He has a kind demeanor, listens tentatively, accurate diagnosis & treatment. Dr Oh' staff is spot on; follow up calls, coordinate appointments that are convenient for the patient. All around Professional and Polite medical clinic read more

I can't speak highly enough of Dr. Oh and his entire staff. My family and I have been seeing Dr. Oh for over 10 years. We have great confidence in Dr. Oh and the entire staff. The overall experience is friendly and efficient. We are blessed that he is our doc! read more

Dr. Oh is my family Dr. He 's wonderful and super care each of us. We are so lucky to have him as family Dr. And front of staff always kind and friendly when i visit to the office. read more

Great office staff and doctor. It seems like they care about their patients. Doctor is intelligible and does his best to provide the best care. read more

I have seen dr. Oh years, and I've recommended all my family members and friends. All of the staff was kind and courteous. Recently my hus and I had appointments at 1:30pm, but we couldn't make it due to personal issues. And my hus called to go dr's office earlier, and we went there at 12. It's lunch time (12-2). I felt so sorry and very impressed too! Wendy read more

I've visited here for 10 plus years. According to my experience of visiting various hospitals and clinics in the world, there are few places that have experienced this level of skill, kindness and professionalism.  I especially recommend patients have language difficulties.I am very pleased to live nearby. read more

Beware of this doctor. My parents, who have medical conditions, have been going to this doctor for a couple years. They have given him 2 years time and unfortunately, my parents and I feel that he does not know what he's doing. He didn't get the medication right and then blamed my parents for it. What kind of doctor puts blame on his patients for something he did wrong!? He gets upset with his staff and asks his patients to do all sorts of "favors"/procedures so he can get extra money. In my opinion, this doctor may be a quack so please, please, please do the research for yourself if you decide to see this doctor. As for the reviews on this doctor, its interesting that some people gives him 5 stars. Maybe they are already pretty healthy already, so there's not much the doctor needs to do. ‍ read more

I have been coming to see Dr Moonmock Oh for about 8 years. I have been so pleased with how the staff and the doctor put me and my health first when I moved over 80 miles away I decided I was still going to come to this practice. The staff is always welcoming, helpful, attentive and very accommodating. Dr Moonmock Oh is very kind, helpful and extremely intelligent. He is amazingly informative and explains why I need take medicine or exercise and or other things to stay healthy. He is there to help. HELP! The doctor is there to inform you then it is up to you to take the information and apply it. My wife and kids continue to come here as well. None of us have ever had a negative experience here. I am not exactly a healthy person and after 3 back surgeries I am sure I can be a difficult patient at times. This is my life, I trust Dr Moonmock Oh and the staff not only with mine but my families as well. As long as he is in practice we will be patients. P.S. We all miss Lily. read more

Dr Oh has been very thorough in my medical care. His approach has been conservative and knowledgeable, explaining clearly what my actual health care needs are. As an older patient, this is very much appreciated. His referrals to specialists has always resulted in quality care being provided. His office is well organized and responds promptly when communicating with patients. read more

I have been a patient of Dr Moon, for approximately, 2 years, now. So far, I have always had a great experience at his clinic, each time I have an appointment with him. Primarily with the quality of medical care being rendered. I have a very high confidence and trust for him, as he listens to what you are addressing to him with regards to your health concerns. Regardless of his busy schedules, he takes his time to provide the best possible care for you. In addition, all of his medical personnel/staff were very welcoming and professional. read more

Dr. Oh Moon Mock is the best doctor for me. He takes a good care of me and my family.

Have been doing my physical here for a few years now. They get you in and out fast. Dr. Oh is approachable and pay attention to what you have to say. The administrative and the clinical staff are nice as well. read more

Been going to doctor oh for years now and his staff is very flexible with my chaotic scheduling needs since I have two little ones. The wait time isn't bad compared to other doctors in the area. Office staff is friendly and fast at answering my questions over email and via phone. read more

I have been going to Dr. Oh for general health check up for 5 years (even after I moved out of Irvine). Dr. Oh has been creating an environment where I could be more comfortable coming into clinic getting the right professional help that I need. Also, all the receptionist and health care professional working there is very kind and accommodating even with their busy schedules. read more

I have been a client of Dr. Oh, for more than 15 years. He is very accurate and reliable. Very quick response and prompt prescription. I recommend Dr. Oh strongly. read more

Dr. Oh and his team have been professional yet very approachable to the patients. I have had the pleasure of under his care for nearly 5 years and I am quite satisfied. read more