1. Deborah Negusse, MD

    1. Deborah Negusse, MD

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    Rancho Cucamonga, CA

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    Deborah Negusse, MD

    4.0 (26 reviews)
    Closed 9:00 am - 5:00 pm

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    My experience here was great! The staff were very friendly and helpful made me feel secure throughout my pre-screening and after.

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    Great experience! Corrine, the manager, was able to get me in the same day. The office is beautiful and clean.

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    Ask the Community - Deborah Negusse, MD

    Review Highlights - Deborah Negusse, MD

    I waited a few months for my insurance to add her to my network because I didn't want my 2 GI procedures done by any other doctor.

    Mentioned in 2 reviews

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    Basim Abdelkarim, MD - Ideal Gastro

    Basim Abdelkarim, MD - Ideal Gastro

    3.7(116 reviews)
    5.2 mi

    I highly recommend Dr. Abdelkarim. He is incredibly patient, thorough, and truly cares about his…read morepatients. He stayed committed to my care and continued working with me until my stomach issues were finally resolved. You never feel rushed or like just another patient--he listens, takes your concerns seriously, and treats you like family. I'm so grateful for the level of care and attention I received and would absolutely recommend him to anyone looking for a knowledgeable and compassionate gastroenterologist.

    It's was my first time there on July 17, 2025 I'm praying that my experience here will be pleasant,…read morepositive and healing. I'm scheduled for a colonoscopy- I was told that the soonest they could get me in for the procedure is August 21, 2025 I have called to ask for something sooner but his scheduler said nothing sooner and if pain persists go to the hospital. Honestly this was very unsettling. I had blood work done she also stated that the PA signed off on it so if something was alarming I would have gotten a phone call- this is neither reassurance. Initially to get in with the doctor I called for 5 days looking for a cancellation as recommended by the staff to be seen sooner (no success) some of these reviews are scary . Document Everything. I was also granted a referral for the Doctor but I seen the PA . I'm not sure what the protocol is.

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    Basim Abdelkarim, MD - Ideal Gastro - Dr. Abdelkarim gets a "thumbs up" in my book!

    Dr. Abdelkarim gets a "thumbs up" in my book!

    Basim Abdelkarim, MD - Ideal Gastro - Basim  Abdelkarim, MD is a Gastroenterologist serving Upland, CA

    Basim Abdelkarim, MD is a Gastroenterologist serving Upland, CA

    Basim Abdelkarim, MD - Ideal Gastro

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    Hussein Abidali - Dr. H. Abidali Gastroenterologist & Advanced Endoscopist

    Hussein Abidali

    3.4(5 reviews)
    2.1 mi

    Doctor Abidali is what I call a SME. He's a subject matter expert in this field. I want to first…read moresay, I've been to many gastro doctors all across SoCal before meeting him. I have been misdiagnosed from other doctors. The type of care Dr. Abidali and his team provide are through the roof. They go the extra mile, they explain to you these medical terms that are not fun to know, and teach you as a patient the best possible practice to live a normal and good life. I've had an endoscopy, done many labs/ stool test and follow ups, every time it's a return of investment (ROI). You will leave the office feeling better and happier. You will leave the office knowing how to control your stomachs behavior, and you will start to make progress. Again, I have put all my trust into Dr.Abidali and I will ALWAYS advocate for him. Because being his patient. He has changed my life, improved my health, and honestly made me a better person in the process of helping my gastro issues. Thank you for everything doctor, I am excited to follow up and see you soon.

    My rating is for Dr. Abidali's PA Rika. She is the one I have been seeing since I began receiving…read morecare at Platinum Digestive Health. She is thorough, knowledgeable and takes time to explain any questions I might have. She orders tests, follow-ups and prescribes meds. I really can't rate Dr. Hussein because I haven't been able to get to know him. As long as I've been a patient of his I would think he would make a point to get to know his patient, I don't know if I should be offended.

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    Andrea S Tieng, MD - See message

    Andrea S Tieng, MD

    3.1(31 reviews)
    1.5 mi

    Find someone else. Ms Tieng is the rudest, most vile doctor…read moreI've ever had the displeasure of "doing business with". She was almost 3 hrs LATE for my appt, no acknowledgement or apology. No call to let the staff know. Just left the patients sitting buck naked in a gown, on a gurney for hours. When I expressed my displeasure she didn't give a rat's patootie and told them to knock me out for the procedure. I would happily tell ms tieng to go jump a rope. Hope you trip. I've recommended to my physician to never utilize ms tieng's services. My Dr notated that this was not her first complaint regarding ms tieng. Date of service 10/2025

    This establishment is unbelievable RUDE and UNPROFESSIONAL . I had scheduled an appointment with…read moreDr. Andrea Tieng two months ago and the appointment is on 05/04/2026. They texted me today and wanted to call their office. They couldn't confirm if I will have a telephone appointment or in person visit and they didn't even know what office I will go to??? That is the answer I got today after waiting for two months. No appointment confirmation, all they said there were no instructions from Dr. Tieng? My appointment is on 05/04/2026. If they can't even confirm what office i am going to ??? WTF would I keep my appointment for??? The operator was so unprofessional. All she said were I can't give no answer right now, wait until Monday then we will let you know??? Is this a JOKE!!!!!!

    Pejman Solaimani, MD - Riverside Digestive & Liver Health Clinic

    Pejman Solaimani, MD - Riverside Digestive & Liver Health Clinic

    2.9(17 reviews)
    13.6 mi

    Dr. Salaimani is a wonderful Dr.. after my second endoscopy he called and explained the results and…read morethe treatment plan. After that, I had an ultrasound of my liver and found an issue so I made an appointment. Unfortunately I was seen by a nurse practitioner who launched into the results from a while ago that I already talked to the dr. about. I stopped he and told her that I was there for a different issue. She said that she wanted to go over the results from tests done months ago and would get to the liver issue later. Update: No one answers the phone down there and instead an "AI" assistant answers but offers no help. My appointment with the dr has been scheduled 5 months out. The Dr is great- his support staff, including the snotty NP, is not helpful or caring.

    Dr solaimani is kind and seems genuinely concerned and interested in helping you however , his…read moreoffice staff , computer system and portal are incompetent. There is no follow through . No one takes responsibility for the total care of the patient here . The office staff controlled solve, the portal doesn't contain results or provide easy assess to enter information regarding history ,medications etc At My first visit ,Dr Solaimani ordered labs and other tests unbeknownst to me. The office staff scheduled an appointment for me to follow up with the doctor two months after the first appointment for which I had to pay a $70 co-pay and my insurance was billed several hundred dollars. When I got there, they told me I hadn't done the labs the Dr had ordered. I inquired as to why I wasn't notified of the labs at the first visit , there answer was " well we must've had a student who put you in the room and she didn't enter your specific lab you use into the computer " . When I ask about why there was no follow-through on this why no one called me to inquire about why I hadn't had the labs before my appointment, they said oh we don't do that. We don't have any way to know about that. They kept referring to possibly a student that made mistakes the last time I was there. No one wanted to take accountability and they couldn't explain the process of how these things are normally done. It sounds like computers run this office, not thinking responsible people. The nurse practitioner I saw (when I had scheduled an appointment with the Dr) spent only 6 minutes with me informing me "all the results of my previous colonoscopy was normal) something the Dr told me after the procedure. Then ushered me out to schedule another appointment in two months after I complete the labs they had "previously ordered. When I ask about why I didn't see the doctor at this visit, as previously scheduled I was told "oh you have to tell us when you come in so we can put you in the right room to see the Dr." "We don't know who your appointment is with!" This office needs an overhaul from the top down! I feel they just want to schedule expensive procedures such as colonoscopies and EGD's , bill your insurance then dismiss you after they have completed these .I will not return!

    Deborah Negusse, MD - gastroenterologist - Updated September 2026

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