1. Phan Quang, MD

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Garden Grove, CA

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Phan Quang, MD

1.4 (39 reviews)

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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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Ask the Community - Phan Quang, MD

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

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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.”

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Kashyap Trivedi, MD - Comprehensive GI Care

Kashyap Trivedi, MD - Comprehensive GI Care

4.6(74 reviews)
8.1 mi

Dr. Lee and his staff here are very kind and wonderful people. They speak to you, not speak at you…read more It was easy to get an appointment. And when I came in for my appointment, I felt very welcomed. Nurse Angela was so sweet and very informative. After leaving the office, I understood exactly what I was going to be doing before my colonoscopy. That information helped relieve a lot of stress I was having about getting a colonoscopy. I was surprised How easy the whole process was. I have been putting this off for over four years. Thank you, Dr. Nouh at Optum for recommending this office, as I would not have known about them on my own.

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!!!!!

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

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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•Edinger

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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Lisa Hertz, MD

Lisa Hertz, MD

4.3(32 reviews)
8.1 mi

I am so shocked to see negative reviews about Dr. Hertz! I have been a patient of hers for several…read moreyears. I can't begin to explain how grateful I am to have her as my GI Doc. I have had a couple procedures with Dr.Hertz. All went extremely well! She is very professional, very caring, very knowledgeable, and amazing bedside manners! She has treated me for various reason and has always been very accommodating to me when I need to get in urgently. I am extremely grateful for her because without her I probably wouldn't have had a wedding when I did. I fell very ill to the point I could not eat or go about my normal routine. I was so sick I had lost a lot of weight and was always in extreme pain. This was a month before my wedding. Dr. Hertz went above and beyond! She got me in, spent so much time with me both in office, and out of office hours. She made sure I was taken care of. She recommended a colonoscopy and endoscopy the week of my wedding. I was very worried about having a colo since this was my first one and honestly just didn't want to have one. Dr. Hertz assured me and was very patient with me. The Day of procedure came, and everything went extremely well. She prescribed me medication and because of that procedure, she removed a big precancerous adenoma! Who would've thought! When I say she cares, I mean she truly cares! Day of my wedding came. I felt a little better being on meds but still a little discomfort. She spoke to my fiancé early that day before our ceremony and he told her how I was feeling. Kid you not, Dr.Hertz called in a prescription to the pharmacy and picked it up her self and brought it to me!! Thanks to that I was able to eat and enjoy my wedding and honeymoon. I am so grateful to have her as my doctor. I would recommend Dr.Hertz in a heartbeat. If I could give her more than 5 stars I would!!

It's been five years since I first came here, and I'm still frustrated with the practice. I…read moreabsolutely *love* Dr. Trivedi, who also works at this office, and I've asked to become his patient twice over the past five years. I had the chance to see Dr. Trivedi once when Dr. H was unavailable, and I was so impressed by his bedside manner that I requested to switch to him as my gastroenterologist. However, my request was denied after Dr. H's input citing that patients can't switch doctors within the practice. Their secretary staff are at least quick to comply with sending over medical records to my new gastroenterologist or other doctor's that may need my medical summary history performed by Dr. H. If you have the option, I highly recommend seeing Dr. Trivedi. My mother sees him, and two other doctors I know absolutely adore him as well. It's just unfortunate that I'm not allowed to be one of his patients!

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Lisa Hertz, MD
Lisa Hertz, MD
Lisa Hertz, MD

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Phan Quang, MD - gastroenterologist - Updated October 2026

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