BAD BAD BAD BAD BAD BAD BAD BAD STAFF AND DOCTOR!!!!!!!!!!!!…read moreIf I could give a negative review I would. This is the second time coming here for my kids. The first time I called (2025) I was providing my information over the phone and the lady was extremely rude. Basically said I didn't have insurance coverage and wasn't able to schedule an appointment. I reiterated the fact that my children were covered and she needed to check her system thoroughly. Back and forth discussion that resulted in my calling back to schedule it when she simply could have scheduled the appointment to begin with and verified the active status of my insurance upon the appointment a month later or even in between that time. With her continued rudeness, I decided to give her a taste of her own medicine "no pun intended". She clearly didn't like it and coincidentally changed her attitude almost immediately. Upon arriving at the Doctors office, i found out that the rude lady over the phone was thinner short lady with dark mid-length hair. I don't recall her name at this moment. Fast forward, we entered the medical room. Dr. Koo kept interrupting me, dismissing my input regarding my concerns for my child and their health, and kept telling my young kids for them to explain themselves. I get it, you want to hear from the child directly how they feel but when they dont have the right words to explain themselves and articulate what is going on then thats when parents should advocate for their kids and speak up, which I tried doing. But again, Dr. Koo continued to ignore my concerns as a parent and kept interrupting me or basically shutting me up. I figured maybe she was having a bad day. giving her and her staff the benefit of doubt. 1 year later, another physical. Took my kids in and guess what!? YUP! Same BS! Same receptionist/nurse (whatever you want to call her) was rude. The rude lady was asking me what concerns i had related to my kids health. I explained and there was no empathy whatsoever. I felt like the concerns I was explaining to her didn't matter and tried rushing me by not allowing me to finish what i wanted to say and asked me "any other concerns" even before finishing my last sentence. If you dont know how to listen to patient's concerns, then this is definitely not the field you should be working in ... lady! She looked like someone put cat litter and fecal matter in her food with that snobby expression on her face! ugh! I hope she reads this too! Mind you, she also forgot to list some concerns i expressed. Anything i mentioned she immediately interrupted me by saying "You can tell the dr that, you can tell the dr that, you can tell the dr that." as if she didnt seem to care about what i had to say. I specifically asked for two specific exams and it was like twisting her arm! these exams i know for a fact she was supposed to do and didnt want to do it probably because she was being lazy. if your child goes in for an annual check up, anything can happen within a year so many changes, so you want to ensure you get EVERYTHING checked out! Not this office. NOPE! THEY DON'T CARE!!!! Once she left, Dr. Koo came in (shaking my head!) I started explaining the concerns. Guess what!? She did the same thing again as she did last year. Interrupted me, dismissed me, she was checking my child and made the comment like "what do i know im not the specialist". Right, youre not the specialist but you ARE the DOCTOR, so have some empathy lady!! Not to mention, my insurance fees pay your salary including my out of pocket expenses, so be grateful! I told myself I cant believe this! AGAIN!?!?!? this is ridiculous! Who does this?! what kind of doctor does this!? i was livid and so annoyed at the treatment we received, (better yet, lack of treatment), and couldn't wait for the appointment to be over with. Oh! and the two exams I requested, only one was done. Lo and behold, the one exam I requested, turned out my child now needs to be a specialist. If i wasn't persistent on the inhouse exam, my child would have suffered even longer!!!! SAVE YOUR TIME, MONEY, ENERGY, AND EVERYTHING OVERALL BY SELECTING SOMEONE WHO GENUINELY CARES!!!! FOR THE LOVE OF GOD DO NOT BRING YOUR CHILDREN HERE!!!!!

Dr. Koo is such a great doctor. She has so much experience. She found my daughters heart condition…read morethrough a murmur and she will now need open heart surgery. So thankful she caught this. She's been a family dr for many others in my fam.

I had been looking for a good Doctor for a while. Started coming to Dr.Chen since last year. Love…read morehim he is patient, explains things to me and is really knowledgable.

I love Dr. Cheng. He has been a good doctor to me for several years. He is very down to earth and…read morenot a rude doctor like some other doctors can be, He knows how to treat his patients well. The office is a shared office with another doctor. Its a large office. The girls in the reception area tend to over book sometimes and can be a bit rude. Its an older building but regardless doctor cheng is a good doctor. Parking is always good and again doctor cheng is a very loving and caring doctor ...

Doctor Vela is the best! Easy to talk to, makes it simple to understand and very great personality…read more Very professional and tells it like it is. The 2 girls at the front desk are very professional and make you feel welcome. Thank you all!

Dr Angelica Maldonado is such an amazing cool chill doctor! She made me feel so comfortable and…read moreeducated me really well. 10/10. The office is clean. The front desk and medical assistants are so nice and sweet. They also made me feel comfortable. Haven't been to the doctors in 10years.. I know bad. But they sure made the experience good. I'm recommending my whole office to make an appointment with them !

I have come to Optum in Montebello for many years but before Oprum they were other health clinics…read moreand name changes. They really care for their patients very much including the doctors. Optum have many specialist like family doctor and pediatric.etc..

I had to Choose '1' Star because it didn't give a Choice to Choose' a ZERO STAR…read more The QUALITY of SERVICES has taken a Turn for the WORSE since it became OPTUM. Optum Does NOT provide Good Service or better yet Optum provides NO SERVICE @ this Point. Calls are ROUTED to the CALL CENTER then SUPPOSEDLY someone will CALL YOU within '48' hours which is ALREADY UNACCEPTABLE ! I've been trying to SCHEDULE an Appointment for 'PRE -OP', I originally called on 3/10 / 26 Tuesday ), waited for a Phone Call back on TUESDAY, WEDNESDAY, THURSDAY & FRIDAY- No Phone Call back was made from the Montebello Office. Here today 3/16 now 1 day Shy of 7 Days, I called back again & still NO CALL was Received from the MONTEBELLO office. For those looking into Providers that CARE about their PATIENTS please look ELSEWHERE- OPTUM is NOT the place. Unfortunately, for now I can't make any Changes with My or My Husbands Insurance... However, when Open Enrollment comes It Definitely will not be with OPTUM.

I came in for a new-patient physical and saw Stacy Luna, FNP-C. She was amazing--super informative,…read morepatient, and made me feel completely comfortable. The medical assistants and phlebotomists were also great and had such joyful, uplifting personalities. The clinic itself is very clean and well-organized. The only minor downside is that the walls are a bit thin, but overall my experience was great. I would definitely recommend coming here! Vine para un examen físico como nueva paciente y me atendió Stacy Luna, FNP-C. Fue increíble--muy informativa, paciente y me hizo sentir completamente cómoda. Los asistentes médicos y los flebotomistas también fueron excelentes y tienen una personalidad muy alegre y agradable. La clínica está muy limpia y bien organizada. La única pequeña desventaja es que las paredes son un poco delgadas, pero en general mi experiencia fue muy buena. Definitivamente recomiendo venir aquí.

They refused my newborn service when he was only six days old only because he wasn't under my…read moreinsurance plan despite the hospital instructions that he needed to be seen after birth so I was turned away until he was officially signed onto my insurance plan. They did not wish to be denied payment, so they cared more about their greed than for my child to receive medical care

Two hour wait for a boloney diagnosis and I already knew. My mistake was bringing my medical…read morehistory. Do better and I deserve a refund.

I have been seeing Dr.L Sensi was a teenager approximately 14-15 years old. My mother took me there…read moreand would take me there prior when there was a doctor Beck alive. Dr. L is very attentive to his patients and very iN DEMAND, I've even started bringing my own kids in and my husband. I hope he doesn't go anywhere for a long time he is a seriously nice man and he takes the time to talk about anything that ails you and is a problem solver. Thank you very much Mr. L always stay the same God bless you! You're the sweetest man ever. Thanks for caring for the Community.

COVID-19: Social distancing is not enforced at this establishment. All of the staff wears a mask…read more All patients are not expected to wear a mask. It's optional now. The staff also wears gloves when handling bodily fluids or when touching patients. There are some hand sanitizers available for patients to use. This place is open and available with limited capacity. They are sanitizing in between patients. I mention these things in my reviews for the sake of protecting immunocompromised people like the elderly and people sick with cancer and other illnesses. COVID-19 Vaccination Proof: This establishment currently does not require proof of vaccination. While I was here in this establishment, I asked if they had any special offers and they weren't offering any at the moment. They also do not allow pets in their establishment UNLESS it's a service animal. Parking: The parking lot for this establishment is behind the building and it is very small. The lot does get full quickly, so you may have to find some street parking, but that shouldn't be an issue. Establishment: The establishment itself is very clean, neat, tidy, small, and organized. They recently moved to a new location, and I love everything except the parking lot because it's so small. A nice upgrade in office space. Yay! Staff: The staff here are very friendly, kind, warm, welcoming, and helpful. They accept both cash and credit cards. There is no credit card minimum. Dr. Jen, as always, is very professional, compassionate, empathetic, and knowledgeable. He doesn't rush, and he truly listens to his patients. I love that he isn't dismissive at all. My favorite doctor as an adult.

My first time here. And honestly I hadn't gone to a doctor for a check-up since the start of the…read morepandemic and had been putting it off for some time since I felt fine, but finally decided it was time before I was way overdue for one. And dare I say it was a very pleasant visit to Dr. Jen's office for the most part... compared to other doctor visits I've been to, going to Dr. Jen definitely won't be daunting compared to others I've been to. My first impression of the place was already a good start, with a very friendly staff and I appreciate that this place seems to keep things in order where I seemed to be the only patient in the office at the time (which is great for the pandemic situation). Dr. Jen was very thorough in my check-up and I specifically came here to also get a pap smear all at once. Very professional throughout, including his female staff member. The pap smear wasn't all that bad (granted my body wasn't cooperating for part of it but that's not his fault) and he made sure I was comfortable the whole time too. Logistics-wise, it was about 3 months out from when I made my appointment call, but I was ok with it since I didn't have an urgent reason. Office itself is in a good location. It's on the 3rd floor and you can find the entrance to the elevators next to the pharmacy. Bonus for the lab being downstairs if you need to get your blood drawn in the future after the doctor's visit, so it's nice that everything you need is in one location. There's free parking around the building and I didn't have trouble snagging a spot on a Friday afternoon.

Dr. Young is the best exceptional cardiologist that I have ever seen! I have been in her care for…read moreover 5 years, and she consistently provides outstanding, compassionate and professional care. She takes the time to listen and ensures that I fully understand my treatment. She makes me feel heard, supported and truly prioritizes my well-being - she genuinely cares! Dr. Young and her staff are warm, attentive and compassionate, which makes every visit a positive experience! They have gone above and beyond to assist with health concerns. Truly, from the bottom of my heart, I don't know where I would be today without Dr. Young! I highly recommend her to anyone in need of a knowledgeable and caring specialist! She will take really good care of your heart!

The front desk lady is clueless. The first thing they ask you if some one referred you. I told her…read moreno. I told her I have a PPO insurance and doesn't need a referral. PPO doesn't need any referral. She keeps on thinking I have a HMO insurance. How dumb can she be. Doesn't she know that PPO pays more than HMO. Terrible experience, refused to to make an appointment.

Felt welcomed from the first phone call for my uncle, we came in and felt safe to ask questions and…read moreconfident he would get his head staples removed safely. Receptionist was so kind and the Dr was friendly and had us in and out of clinic safely. Highly recommend him. Thank you for the care Dr.

This rating is only for the phone call. had to ring like 20 times before and answer and the…read morereceptionist did not know how to answer any questions. do you accept medi-cal? - "no" ....okay what do you accept? - "cash" ....okay so what health insurance do you accept? -"not right now" ...so when will you accept insurance -"idk the answer im new" ..can you get someone else go help me? - "at 1 dr in" ...if the dr is in at 1 but youre open from 8- close people just have to wait for the dr at 1? - she contradicts her answer then gives some dumb response $45 walk in fee i lost brain cells communicating with her. felt like pulling teeth to get information i ask go speak to someone