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    Lisa Hertz, MD

    4.3 (32 reviews)
    Open 9:00 am - 5:00 pm

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    Day of the procedure
    Dustin D.

    I came to see Dr Hertz for some troubling symptoms I was having. After an examination she recommended an endoscopy and colonoscopy. I was hesitant to go through with the procedures because I'd never been sedated before and had some strong fears about the whole thing. Dr. Hertz assured me it wasn't a big deal and I'd be in good hands. After some thought I decided to trust her and go through with the procedures. On the day of the procedure we got started 30 minutes late, which didn't help the fact that I was already feeling irritated and fearful. When Dr. Hertz did finally show up she didn't apologize, rather she made a comment about how they were "only" running 30 minutes late, and that's not bad. I found this incredibly callous of her to say since I was sitting there an extra 30 minutes hungry and scared. After the procedure I woke up and immediately began to complain that my throat was hurting. They assured me that this was normal and should go away within 24 hours. I went home and went to sleep. When I woke up I felt a pain in my throat like I've never felt before. Swallowing, talking, and even breathing was agony. When I looked in the mirror at my throat I was shocked to see that my uvula had turned a deep purple/black color and the whole back of my throat was red and irritated (see pic). I immediately knew something was wrong so I called Dr. Hertz's office. It was after hours so I left a message explaining what was happening and asking for the on call doctor to call me back. IT TOOK 2 HOURS TO RECEIVE A CALL BACK. When my phone finally did ring my wife answered and explained the situation to the doctor (not Dr. Hertz). He offered no help and instead said he would have Dr. Hertz call us ASAP. 15 minutes later Dr. Hertz called back and my wife answered. Again my wife explained the situation calmly and clearly, but Dr. Hertz immediately got defensive. She asked to speak directly to me, not my wife,and basically said that what was happening was no big deal and will go away by the next day. She said if I was feeling discomfort I should buy some Vick's chloraseptic, or if I'm really worried I can go to the emergency room. I couldn't believe how she wasn't taking my concerns or injury seriously. It was very clear to me that this was more than routine discomfort and there was no way I'd be feeling better any time soon. I got the feeling she was annoyed that I was interrupting her Friday evening. At this point I got emotional and told her "thanks for nothing" and hung up the phone. Keep in mind i'd been given some strong drugs just hours earlier and still was not in my right mind emotionally. A few minutes after I hung up the phone I received a text from Dr. Hertz. This text was meant to be sent to her partner, but she made a mistake and texted me instead. In the text she called my wife and I assholes, saying that we were yelling and screaming at her (see pic). My wife NEVER raised her voice to Dr. Hertz, and although I may have been a bit harsh by hanging up, I would've hoped she could understand that I was scared and still not quite myself. I found this whole exchange extremely unprofessional. If Dr. Hertz can't even use her cell phone correctly it's no wonder she maimed me during the procedure. That night was pure agony, and at 3am I decided I needed to go to urgent care. When the doctor there saw me he was shocked that Dr. Hertz didn't offer me any antibiotics as a precaution for infection, steroids to help healing, or pain meds to help with discomfort. He prescribed all 3 and sent me home, saying it could take up to two weeks to heal. The next day Dr. Hertz texted me (not even the courtesy of a phone call) to see how I was feeling. When I told her about my urgent care visit she again became defensive. She told me the doctor I saw was wrong to give me those prescriptions since it's just a simple bruise. At this point I told her I would rather trust the doctor from urgent care and I would no longer be seeking any treatment from her moving forward. After doing some research on my own and speaking to a friend of mine who is an ER doctor I've come to the conclusion that I am suffering from uvular necrosis. This is a fairly common complication from an endoscopy and usually caused from compression of the uvula against the pharynx or hard palate that results in impaired blood flow and eventually necrosis. DR.HERTZ SHOULD KNOW ABOUT THIS AND WARN HER PATIENTS THIS IS A POSSIBILITY. DR. HERTZ SHOULD KNOW HOW TO TREAT THIS WHEN A PATIENT PRESENTS THE SYMPTOMS. Needless to say I do not recommend Dr. Hertz for even the most simple of procedures.

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    1 year ago

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    6 years ago

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    9 years ago

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    12 years ago

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    7 years ago

    I have been going to the office of Dr Lisa Hertz for over 5 years and I truly appreciate her follow up.

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    15 years ago

    Excellent doc! Had my colonoscopy with no problems and was in and out within a month, that's awesome for a specialist.

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    Ask the Community - Lisa Hertz, MD

    Review Highlights - Lisa Hertz, MD

    Hertz called in a prescription to the pharmacy and picked it up her self and brought it to me!!

    Mentioned in 21 reviews

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    Kashyap Trivedi, MD - Comprehensive GI Care

    Kashyap Trivedi, MD - Comprehensive GI Care

    4.6(72 reviews)
    0.0 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

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    Seyedehsan Navabi, MD - United Gastroenterologists - Flyer for Dr Navabi

    Seyedehsan Navabi, MD - United Gastroenterologists

    3.7(6 reviews)
    0.9 mi

    I was touched and amazed by the exemplary care I received starting first with Emma, Dr. Navabi's…read moretechnician and representative by phone. When I called with an insurance question she didn't have the answer to, Emma was forthcoming and apologetic. Her voice imparted kindness and care which mattered much more than the information I had called about as a new patient. The day of my appointment I had difficulty finding the location and Emma patiently and kindly helped me first with my anxiety over being late and later with figuring out how I could still see the Dr. when I ended up finally locating the facility and being extremely late. The Dr. was also lovely and friendly and very kind to me about being so late. He spent as much time with me as I needed to understand my condition even though he had every right to have not seen me that day at all (since I was so late). I was impressed with my entire experience knowing that Dr. Navabi carefully selected a technician like Emma to represent his practice in a caring way. :) In a world that can feel more and more disconnected, emotionally intelligent young women such as Emma are more valuable than ever. Well done Dr. Navabi, knowing how important your representatives are. Well done Emma! Who you are in our world is valuable and urgently needed! :) And also the Dr. seemed lovely and he made me feel seen and heard. :) Much appreciated. Thank you so much! :)

    I was trying to get a colonoscopy done by Dr. Navabi, but his office staff is the most unavailable,…read moreand incompetent staff I've ever dealt with, and I'm assuming Dr. Navabi must be the same. I couldn't even get through to the office to cancel my upcoming colonoscopy because all I kept getting was an automated machine. I left several messages and never received any return phone calls. I also had problems with his office staff not following through, etc., on things prior to this. I can't believe that Dr. Navabi could be a good doctor when he has such incompetent, and unavailable staff.

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    Seyedehsan Navabi, MD - United Gastroenterologists
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    Chen Joe, MD

    Chen Joe, MD

    3.0(6 reviews)
    1.1 mi

    Staff at the front was rude upon checking in and asking a very simple question. …read more That alone made enough reason for a review like this, employees should be able to answer questions in a polite manner. On a follow up visit one of the staff members was more accommodating and another one was talking to me about seeking another expert opinion outside of Dr. Chen since his diagnosis didn't make much sense. There are multiple things I was not fond of when it came to his practice and overall a bad experience for my first time seeing a specialist in his field. 1) even with insurance his prices aren't cheap and for the quality of service you receive it's not worth your money 2) he prescribed me a medicine that caused me to have horrific side effects and after telling him that sent me to the ER midnight for ten hours he didn't have any comment to make. I emphasized the bill was over $350+ with good insurance. . 3) during my 2nd appointment the research I looked up seemed to have matched his "knowledge" and he didn't have any answer what so ever on what could be causing my abdominal pain (bingo: it was the medication) He insisted I stay on it for another month when I said there was no reason to since my initial concern was already solved? The medication doesn't target abdominal pain so why would he want me to do that after repeated mentions of side effects? Regardless I entertained it for five days and felt awful, I couldn't function at all and immediately stopped using it. I've been better since. . How does that work? On top of that he walked out mid-sentence when I was bringing up how I waited over an hour to be seen when I was on time for my appointment and he had no answer or advice to give while just saying "I'll book you for a month out for now with a revisit" What?? I've cancelled my appointment and kept all the receipts because the business seems like he just wants more $$$ than anything. This is my honest review and experience with him and I won't be removing it unless he offers me a full refund of both appointments. He's very lucky I'm not asking for the ER fees which is seriously ridiculously high. Awful. .

    I think that Dr. Chen is a great doctor but since separating from Long Beach Gastro there are many…read moreproblems within his office. They no longer have a Patient Portal (supposedly working on it for months now) and it's very hard to reach anyone in their office. Mostly you get directed to voice mail. I had tests performed in early August and was told I would have the results within two weeks after the procedure. It's been well over two weeks and when I called (after multiple attempts) I was advised the doctor had reviewed the results a week and a half after the procedure but never bothered to let me know. He saw the results two weeks ago and no word. I have been seeing Dr. Chen for several years but I am becoming extremely discouraged with his practice.

    Eugene Thomas Kahn M.D.

    Eugene Thomas Kahn M.D.

    5.0(5 reviews)
    0.9 mi

    I had been struggling with a mysterious disorder for over a month, which led to pulling two of my…read moregroin muscles. I was originally told and believed that I had hernias which is what led me to Eugene Kahn. He did a thorough check up for me, listening the whole time while I told him how anxious all these medical issues had made me. He was one of the most empathetic, compassionate doctors I have ever come across. He took the time to hear me out even though he knew I had just pulled my muscles. While he never did a surgery for me, I get the vibe that he is a hard working and honest man who looks out for others. Do not hesitate to choose this man as your surgeon.

    I had a surgical procedure through Workers Compensation with Dr Kahn! His calmness, knowledge of…read morethe medical issue at hand and openness to answering all my questions was key to me believing that he was the perfect doctor for my procedure! The office staff was always friendly and sent me timely reminders for all my appointments! I never had to wait more than a couple minutes before I was taken to a room to be seen by Dr Kahn. The hospital experience was more of the same! It was done at Los Alamitos Hospital and was done as an outpatient procedure! He met with me before and after the procedure and did the same for my family that was in the waiting room! Dr Kahn has been everything I would expect a doctor to be to a patient. I have already recommended him to a couple of my friends! I highly recommend him and if needed use him in the future! Thank you Dr Kahn!

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    Eugene Thomas Kahn M.D.
    Eugene Thomas Kahn M.D.
    Eugene Thomas Kahn M.D.

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    Kumkum Patel MD - Board-certified gastroenterologist here for ALL your gut issues and colon cancer screening

    Kumkum Patel MD

    4.4(7 reviews)
    13.8 mi

    I write this review with immense gratitude for dr. Patel. After being very sick for several months…read moremy symptoms became increasingly worse and debilitating. Not knowing where to turn or whom to trust, thankfully a dear friend referred me to Dr. Patel. During my first appointment, Dr. Patel listened carefully to my concerns and understood that I was not only in severe pain but also nervous about being in a doctor's office. She quickly put me at rest with her compassionate and positive bedside manner. After her very thorough examination, she scheduled multiple tests. These tests identified serious but treatable GI issues, a hormonal imbalance, and a large ulcer that I was completely unaware of. Within a short time after starting treatment I was a newer better version of myself. Now, months later, I continue to improve and truly appreciate Dr. Patel for her incredible ability and willingness to address my medical issues.

    After suffering with a very difficult bout of IBS for 10 weeks and not getting answers or help from…read moretwo doctors, I found Dr. Patel, who gave me LOTs of HOPE, along with important information re: my health problems, meds and supplements. She understood how exhausted I was and showed me warm caring as well, which I appreciated! The endoscopy she suggested went very smoothly, with her by my side to answer my questions, beforehand and afterwards. Since my two visits, I've called her office with questions to her medical assistant, Precious, and I received answers from Dr. Patel within a day as well as a personal reply from her via email. Though she is listed here with a Tustin, CA office, she has a Mission Viejo office as well--it's very convenient for me!

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    Kumkum Patel MD

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    Lisa Hertz, MD - gastroenterologist - Updated June 2026

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