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    Phan Quang, MD

    1.4 (39 reviews)

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    3 years ago

    that's really bad receptionist - reviews from other patients are 100% true about customer services that is so bad

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    8 years ago

    Wow the receptionist here is far beyond rude...I cant find an appropriate word to describe her...

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    8 years ago

    The front desk staff is very rude, on the phone and in person. The doctor seems nice.

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    7 years ago

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    Ask the Community - Phan Quang, MD

    What are your hours?

    MONDAY, TUES, THURS, FRIDAY 09-12PM, 2-5PM… Read more

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    Review Highlights - Phan Quang, MD

    Then my second times I met with the receptionist to get all the papers and the prescription for the prep of my colonoscopy.

    Mentioned in 2 reviews

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    Associated Gastroenterology Medical Group

    Associated Gastroenterology Medical Group

    4.0(130 reviews)
    5.1 mi

    I had a colonoscopy and told my new doctor, Kavita Singh, that I was concerned about the severse…read morestomach cramps I had from the excess air left in my body, frrom the previous doctor's colonoscopy. Kavita Singh was awesome - I had no stomach cramps whatsoever from her doing my procedure - she listened to me and removed all of the excess air. It was the best experience I could have asked for with Dr. Singh. I would highly recommend her to anyone needing this procedure.

    Dr. Riff is an excellent physician with outstanding bedside manner. I've been a patient since 2020…read moreand have always trusted and appreciated the care I've received from him. Unfortunately, my recent experience with the office's a staff from their billing department was extremely frustrating and unacceptable. I was blindsided by a past-due bill after two years with no prior notice. When I called to make a payment and understand the delay, I was told that multiple statements had been mailed and voicemails left--none of which I ever received. What was most concerning was the conduct of the billing representative.( I have the name but, not mentioning here) When I calmly asked for an explanation as to why I was being notified after such a long delay, she became defensive, raised her voice, and spoke to me in a disrespectful and aggressive manner. She even threatened to send the account to collections--despite the fact that no such action had been taken during the past two years while the balance was apparently outstanding. This kind of behavior is completely inappropriate and unacceptable, especially in a healthcare setting. When I questioned her tone, the situation escalated further. I was eventually transferred to a supervisor, who took my payment and presented herself professionally; however, the explanation provided still did not justify the delayed billing or the way the situation was handled. While I hold Dr. Riff in very high regard, this experience with this associate with the billing department has severely impacted my overall trust in the practice. No patient should be treated this way. Unfortunately, this has led me to seriously reconsider continuing my care here.

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    Associated Gastroenterology Medical Group
    Associated Gastroenterology Medical Group - Dr. Riff

    Dr. Riff

    Associated Gastroenterology Medical Group

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    Kashyap Trivedi, MD - Comprehensive GI Care

    Kashyap Trivedi, MD - Comprehensive GI Care

    4.6(72 reviews)
    8.1 mi

    This review is for Dr. Mankal who works out of the same office. My elderly father was diagnosed…read morewith advanced Liver issues after he contracted Covid 19 in 2020. The liver doctor at hospital gave him a year to live. After he was released we were traveling to a doctor in San Gabriel which was quite a distance since my parents live in Lakewood, Ca. After searching the internet I came across Dr. Mankal in Los Alamitos and when I say he has been an absolute God send, I mean it!!!! While my father's condition is not without its issues, Dr. Mankal has been amazing. His bedside manner is incredible, he is patient and extremely knowledgeable and best of all my father is still with us, 4 years after the liver doctor at the hospital wrote him off. I also love the portal and usually get answers to questions or requests for meds within 24 hours. I hesitate to post this review because I worry Dr. Mankal will be swamped with new patients but then I think of others facing these types of challenges and needing quality care and feel compelled to share. We also love Angela, his front office lady, she is wonderful as well! I strongly recommend Dr, Mankal and Angela!!!!!

    This office is super responsive, so I'm surprised to see reviews about delays in responsiveness or…read morescheduling appointments. New Patient Process I called the office to ask about their new patient process, and they helpfully walked me through the process and directed me to their online forms. After filling out the online forms and submitting them via email, I was able to call the office and have someone on the phone to help with questions. Super nice and patient staff members! They also responded to my patient forms same-day, and my first appointment was scheduled within a week. Appointments The patient portal and ability to use televisits is really convenient. I am not a tech-savvy person, and I was able to setup my account online, pay online, and virtually meet Dr. Mankal in a televisit. Patient Care Dr. Mankal listened to all my concerns and was able to describe what was happening in a way I could easily understand. He prescribed clear directions for next steps, and a prognosis. I really appreciated how clear and attentive he was.

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    Kashyap Trivedi, MD - Comprehensive GI Care
    Kashyap Trivedi, MD - Comprehensive GI Care - Fibroscan machine

    Fibroscan machine

    Kashyap Trivedi, MD - Comprehensive GI Care

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    Huafeng Shen, M.D. - Dr. Huafeng Shen, MD

    Huafeng Shen, M.D.

    4.2(5 reviews)
    6.5 mi

    It started off well. I had a consultation appointment. I then had a colonoscopy and an endoscopy,…read moreon October 1, 2025. I went to the follow up appointment 2 weeks later. I was told I had Pylori. A stomach infection. He prescribed three medications. I deliberately reminded the doctor I take Methotrexate. Many medications do not interact well with Methotrexate. He said it was fine. I picked up the three medications the next morning. The pharmacist said I should not take these medications. I told her the doctor said it was fine. I should have listened to her. I had lunch and took one of each pill. By 4.00pm, I thought I was going to die. My heart was racing, sweating, shaking, severe nausea. Dry heaves. I'm a widow, and there's usually no one here at that time of day. By a miracle I had a friend here that day. He wanted to call the paramedics. He got me water, and sat me down in my hay barn, as I couldn't stand up. I was terrified. I drank a bottle of water. He managed to drag me to my house and by 4.30pm, I was in bed. I'm diabetic. I had no dinner, and took no meds. I've never felt so bad in my life and I'm 77 years old. I kept drinking water to flush the meds, most of the night. I called Dr Shen at 9.00am the next morning. The person I spoke to, said she would send a message to the doctor. That was 2 weeks ago. I never took another pill. I spoke to my GP, who said not to take them. Dr Shen, or anyone from his office, never called me until yesterday. October 28, 2025. I had already made an appointment with my previous gastroenterologist whom I should have gone to in the first place. I went to Dr Shen as he was local, and I could avoid the drive to Orange County. Big mistake. It wasn't even him calling, but someone in his office. I told her I wasn't interested in anything they had to say, as they abandoned me two weeks ago. I'm disgusted with the lack of compassion or any communication. I was just a number on their conveyor belt. I'll never go back there. I have all the reports which I will give to my original gastroenterologist and move on.

    Very good Dr. Explain everything and had the patience to repeat what ever you don't understand. I…read morehardly recommend him.

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    Huafeng Shen, M.D. - If you are 45 or older, call today to schedule your screening colonoscopy.

    If you are 45 or older, call today to schedule your screening colonoscopy.

    Huafeng Shen, M.D.
    Huafeng Shen, M.D.

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    Digestive Disease Consultants of Orange County

    Digestive Disease Consultants of Orange County

    3.7(274 reviews)
    11.5 mi

    5 Stars I've been a patient at Digestive Disease Consultants…read moreof Orange County for many years and have always received excellent care. Recently, I had a health emergency and needed a prompt appointment and procedure. The team scheduled and completed everything within 24 hours -- truly impressive! Dr. David Choi was warm, funny, professional, and made me feel completely at ease during a very stressful time. The entire staff is courteous, prompt, and highly professional. I highly recommend this practice and Dr. Choi to anyone seeking top-quality gastroenterology care. Thank you, Dr. Choi and the DDC team!

    So I went to this place for a consultation appointment at 2:30 pm yesterday. I was there on time,…read morethen I checked in and signed a bunch of paperwork that makes medical care so expensive here and exonerates everyone in the process in case I get screwed. Then, I sat down in the lobby patiently awaiting to get my name called. A little later, another gentleman came in and told the front desk that he had a 2:45 appointment, and he did pretty much the same things as I did. After another 5 minutes or so, his name got called and he went inside. I didn't give it much thought thinking he could be seeing a different doctor than mine. Then later, another old lady came in for her appointment, I didn't hear what she said about her appointment time, and she got called rather quickly, but I was still waiting. After half an hour of waiting, my patience was running out, so I went to the front desk and asked them why people who had come after me went in before me. Well, my complaint kinda worked, my name got called and I was put into a room to wait. While I was waiting, I heard a doctor speak to a patient in an adjacent room, and it was a female doctor. I happened to know that my doctor was a female too. So I patiently waited for a good 5-10 minutes, and when I had a pretty good idea that the doctor was done with the patient and was walking out, I opened my door and saw the gentleman with the 2:45 appointment accompanied by a female doctor, who was the very same doctor that would finish me with my consultation in a few minutes. At that point, I was beyond being upset, but I kept my cool. Before I left, I requested a meeting with their office manager who patronized me with some bogus reasons that the front desk young lady was new, it was her 2nd day at work, lack of training, blah, blah, blah. Come on, I had been waiting in the lobby for over half an hour, and she was obviously the more senior one than the other dude. What really troubles me is why they would arrange not to see me with an appointment at 2:30 for a 5-minute consultation, instead they chose to see a patient with an appointment at 2:45 1st for a half an hour visit. Could it be that they enjoyed keeping a foreigner-looking individual waiting as he didn't look he belonged in the 1st place? That I don't really know, I certainly hope not. But isn't it an interesting time in which we live. Full disclosure: I am a Chinese, the gentleman is either a hispanic or southern Asian, the lady is white.

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    Digestive Disease Consultants of Orange County
    Digestive Disease Consultants of Orange County
    Digestive Disease Consultants of Orange County

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    Phan Quang, MD - gastroenterologist - Updated May 2026

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