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    William Sim, MD

    4.2 (5 reviews)

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    6 months ago

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    3 years ago

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    4 years ago

    Always awesome service and sense of urgency. Dr. Sim is great and knows what he is talking about

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    4 years ago

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    7 years ago

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    Hsu Diana, MD - I bet the albino turtle is treated better than her patients.

    Hsu Diana, MD

    1.5(15 reviews)
    1.5 mi

    This has been and continues to be a disturbing and stressful experience. My mother, who has…read moredementia and is an active patient under Dr. Diana Hsu's care, was left without essential medications during a transition to a neurologist. Both neurology offices confirmed that providing a temporary refill is standard practice for primary care physicians in this situation. Despite this, Dr. Hsu refused to refill the prescriptions, stating it was outside her specialty--leaving her own patient without medication. We were forced to escalate through insurance and go to urgent care to obtain medications that are routinely managed in primary care. In addition, our experience with the office staff was extremely frustrating. We often encountered confusion around basic insurance and care coordination questions and had to repeatedly follow up ourselves to move things forward. This added unnecessary stress during an already difficult situation. For a vulnerable patient with dementia, this lack of continuity of care and coordination is extremely concerning and raises serious ethical concerns, as going without necessary medication places a dementia patient at risk. This experience raises serious concerns about the standard of care being provided, especially for vulnerable patients such as those with dementia, where continuity of care is critical. Due to the seriousness of this situation, we will be reporting this through appropriate regulatory channels. Patients should be aware of how situations like this may be handled. We are immediately seeking a primary care provider that ensures appropriate and consistent care moving forward.

    This has been and continues to be a disturbing and stressful experience. My mother, who has…read moredementia and is an active patient under Dr. Diana Hsu's care, was left without essential medications during a transition to a neurologist. Both neurology offices confirmed that providing a temporary refill is standard practice for primary care physicians in this situation. Despite this, Dr. Hsu refused to refill the prescriptions, stating it was outside her specialty--leaving her own patient without medication. We were forced to escalate through insurance and go to urgent care to obtain medications that are routinely managed in primary care. In addition, our experience with the office staff was extremely frustrating. We often encountered confusion around basic insurance and care coordination questions and had to repeatedly follow up ourselves to move things forward. This added unnecessary stress during an already difficult situation. For a vulnerable patient with dementia, this lack of continuity of care and coordination is extremely concerning and raises serious ethical concerns, as going without necessary medication places a dementia patient at risk. This experience raises serious concerns about the standard of care being provided, especially for vulnerable patients such as those with dementia, where continuity of care is critical. Due to the seriousness of this situation, we will be reporting this through appropriate regulatory channels. Patients should be aware of how situations like this may be handled. We are immediately seeking a primary care provider that ensures appropriate and consistent care moving forward.

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    Hsu Diana, MD - Such a messy outdated place reminds me of the pet stores in Chinatown.

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    Such a messy outdated place reminds me of the pet stores in Chinatown.

    Pioneer Medical Group - Manuel Chon, M.D. - Obstetrics/Gynecology

    Pioneer Medical Group

    2.4(59 reviews)
    0.9 mi

    Be wary. Huge misdiagnoses from Venugopal, and prescribing potent medication to a 1-year old. I…read morerecommend retiring Dr. Venugopal. My daughter had rashes through out her body, and without even looking in her mouth (key), he diagnosed her with chicken pox. Not only that, but he prescribed a high percentage of hydrocortisone ointment to use on her face. Thankfully we refused to give her the ointment after suspicion, and took her to the ER. It turns out, with a simple look in her mouth, it ended up being HFM (hands foot mouth) disorder. And the physician there told us not to use the dangerous dose of medication Dr Venugopal prescribed. I wouldn't recommend him. Sadly, the only two decent pediatric physicians in this network are him and Dr. Kato, and both have there concerning flaws. I'd rather pick Dr. Kato, who only prescribes antibiotics used in the 80s, than mr dangerous misdiagnoses. On a side note, Dr Venugopal's nurse is nice.

    3rd location's a charm…read more.. One of my favorite and no hassle places is Minute Clinic, and I go there whenever I need to. Unfortunately, they closed at 5:30pm, and did not take me in for the reason of my visit today even though they stop seeing patients 15 mins before and I had arrived 30 mins prior to close. Oh well. I then went to my normal Pioneer Group urgent care location in Long Beach, and they had a sign on the door stating they were CLOSED... I experienced some issues with the security officer there also... Finally, I came to the Pioneer Group Downey location... they were open!! Thank goodness. You don't know how overjoyed I was. I signed in, everything was a breeze. They called my name after about 2 mins and I was SEEN by the doctor immediately. She gave me a prescription and I am on my way to wellness. After 3 hours of driving around to see the doctor, I'm so tired but relieved of my frustration. Thank you for the rapid turnaround. I didn't expect to be seen so quickly! I hope to be well and not have to return again.

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    Pioneer Medical Group - Sasha Maher, D.O. - ENT

    Sasha Maher, D.O. - ENT

    Pioneer Medical Group - Dionisio Dabu, M.D. - Family Practice

    Dionisio Dabu, M.D. - Family Practice

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    Rodriguez Martha, MD - Nice And celan

    Rodriguez Martha, MD

    2.7(15 reviews)
    1.1 mi

    I am a patient at this location and I have had most of my care with Perales the PA and also have…read morehad telecoms with Dr. Rodriguez and I have had nothing but great quality care. Perales has been great from day one with my care and always taking her time during every visit to answer any questions or concerns. She is amazing and efficent. All of the staff from the front office to the back office are also amazing. They are always welcoming, professinal and helpful. I am so happy that I finally found just great quality care, it makes all the difference!!

    WORST PLACE EVER!…read more The doctors and staff here are extremely unhelpful and the office seems completely disorganized. According to the front-desk staff member I spoke with today, they apparently do not have a biller at all or anyone available to verify insurance coverage for medications. So when a medication is not covered by your insurance, they simply tell you that it is not their fault and that it is not their responsibility to verify medication coverage with the pharmacy. As the patient, you are left calling the pharmacy and the clinic back and forth yourself, doing the work that I believe the medical office should be helping with. This is extremely frustrating and creates unnecessary delays for patients trying to obtain their medications. When you call the office, you may find that the doctor has already left by 3 PM, leaving nobody available to properly assist you. The front-desk woman even told me to call back at 5:30 PM, but the office actually closes at 5:00 PM. Yelp also says they are open until 6:00 PM, but nope--the office closes at 5:00 PM. Overall, my experience has been extremely frustrating, and highly poorly managed. This is also one of the only places where you apparently need a phone appointment just to get a prescription refill. It feels like they are making a simple refill process unnecessarily difficult and turning it into another appointment. Save yourself the headache and avoid this place if you can.

    William Sim, MD - internalmed - Updated August 2026

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