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    Gemma Ko, MD

    3.3 (16 reviews)
    Closed • 8:00 am - 5:00 pm

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    Ask the Community - Gemma Ko, MD

    Review Highlights - Gemma Ko, MD

    “Ko has ordered referrals when needed, makes sure labs are routine, listens and addresses my concerns and she follows up!”

    Mentioned in 10 reviews

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    Helen S Koo, MD - Office Hours

    Helen S Koo, MD

    3.8(13 reviews)
    0.9 mi

    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.

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    Helen S Koo, MD
    Helen S Koo, MD
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    Linda Hsu, MD - New location!

    Linda Hsu, MD

    4.6(32 reviews)
    6.5 mi

    I've called multiple times for different reasons and have left plenty of voicemails, but they…read morerarely answer their phone and never seem to call back. Days go by without any response, and I've had to go in person just to find out what's going on. It's really frustrating because a doctor's office should be accessible to their patients. I've called at different times and on different days, and it honestly feels like their phones aren't even being monitored. It shouldn't be this difficult to get in contact with your doctor's office when you need help or have questions. You should be able to get a response in a reasonable amount of time, especially when it concerns your health.

    Not only is she an amazing reputable physician, but she is full of passion, knowledge, wisdom and…read moredependable! I used to be with Kaiser for many years along with my children until I got to know Dr Linda Hsu's care by observing her in the medical field and getting feedback from not only her patients but also from staff in the hospitals, her colleagues and the community!!! I could not wait until it was time to enroll, and without hesitation, asked her to be my primary and my children's as well. It was the best decision I've made to know that someone truly cares about my well-being, physically, emotionally, mentally! She is a passionate woman who has so much love for mankind and dedicated to serve the community! She is a blessing!!! I also have to add that her staff in her office are very delightful and helpful!

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    Linda Hsu, MD
    Linda Hsu, MD
    Linda Hsu, MD

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    Carbon Health Urgent Care Whittier

    Carbon Health Urgent Care Whittier

    3.6(36 reviews)
    2.7 mi

    The doctor & staff were super nice and took their time with me. The facility is nice, very…read morewelcoming and very clean.

    I wasn't gonna leave a bad review but as a caution for other people. I set up an appointment as I…read moregot a viral infection that needed treatment right away according to google to prevent further spread. This location popped up in my in-network urgent care. The office was clean, I had a co-pay of $25 and the doctor was nice but he gave me poor medical care. He said " I won't diagnose it as __ but we will treat it as ___ ". Confusing but I received a prescription so I was pleased. My symptoms became painful throughout the day so I called my physicians office and they couldn't see me until 2 days. By my appointment all my symptoms had severely intensified. My physician took one look at me and knew what was going on. I received a steroid shot, pain medication and a referral to see a specialist that same day. Symptoms got better and I saw the specialist with a co-pay of $65. Received the proper care and moved on with life. A month later I receive a text from carbon saying "your bill is ready from your visit". To make things more ridiculous it was due in 5 days and of courses they were automatically charging it. No explanation just a bill so I emailed them for an itemized bill as my insurance didn't send me anything saying they didn't cover the full visit. They have yet to respond. Read the other 1 star reviews (I wish I had) and take your medical concerns elsewhere.

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    Carbon Health Urgent Care Whittier
    Carbon Health Urgent Care Whittier
    Carbon Health Urgent Care Whittier

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    Gemma Ko, MD - internalmed - Updated September 2026

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