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    United Gastroenterologists

    3.8 (9 reviews)
    Closed 8:00 am - 5:00 pm

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    Ask the Community - United Gastroenterologists

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    United Medical Doctors

    United Medical Doctors

    4.4(7 reviews)
    5.9 mi

    Ever since I first met him I felt a sense a calmness, immediately in his presence. He's so…read morethorough, honest and patient. Also, unbelievably knowledgeable. Always asking for consent and personal feedback such as: feelings, thoughts, unlimited of questions. Dr. Lee is genuinely out for us the patients and our best interest. I've met with multiple other GI Docs and left feeling disregarded, minimized, disrespected, confused, and quite frankly treated like a dollar sign. I honestly have never felt more seen and comfortable with Dr. Lee. I don't have one bad thing to say about him or his staff. I highly recommend him! A shout out to Yasmeen. I'm always emailing and calling her, she's so nice, very knowledgeable, patient with me, and so understanding. She works very hard and is on top of everything. I always get a fast response no matter what. Even though it's probably not necessarily her job she always helps me. Not once has she made me bad or an inconvenience to her. She's super friendly, down to earth and still professional. Thank you so much. We need more cool peeps like you and Dr. Lee respectfully of course in the medical field.

    I came in for a screening with Dr. Scott Lee, and the experience was excellent from start to…read morefinish. Dr. Lee is extremely professional, kind, and patient. He explained everything clearly, took his time to answer all my questions, and made the whole screening process feel calm and stress-free. I felt truly cared for and confident throughout the visit. It's not easy to find a doctor who is both highly knowledgeable and genuinely attentive - Dr. Lee is exactly that. Highly recommend!

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    United Medical Doctors
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    Basim Abdelkarim, MD - Ideal Gastro

    Basim Abdelkarim, MD - Ideal Gastro

    3.7(113 reviews)
    9.9 mi

    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.

    I called in January as I had a procedure that was supposed to to be done within a year. I…read moreexplained that I had a recent heart attack and was on medication. I was told they could not do the procedure and would have to contact the heart doctor. Six months, never contacted the doctor but, they billed 265 dollars to take my phone call. What a scam! Borderline criminal tactics. So desperate for money you skim it from elderly disabled. Shame on you!

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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

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    Ravi K. Berry, M.D. - Ravi K. Berry, MD

    Ravi K. Berry, M.D.

    4.5(11 reviews)
    9.3 mi

    WORST DOCTOR EVER!!!!!!!. 10 yr old straight A active son chronically sick (120 days of school…read moreyear). For months & months he was sent for internal cameras, drinking barium for tests, & Dr Berry prescribed tons of pills. Convinced husband son was faking it when my son DESPERATELY needed his Dad's support We almost got divorced over how he then daily treated our son until I went to a GREAT DICTOR I took my son to Dr Galen Huang. Kept interrupting me during case history "did Dr Berry EVER bother to do a quick & cheap lactose intolerance test ?" NO DR BERRY DID NOT. 10 minutes with Dr Huang and my son was almost "cured". Super quick test showed my son was massively lactose intolerant ! Any guess what all the drug companies use as a cheap filler in all their pills Berry prescribed? LACTOSE !! Dr Berry did NOT do a totally non-invasive and 1st step inexpensive test that takes less than 3 hrs sitting in a waiting room after drinking a solution in a cup. NO !!! The "wildly expensive cure" ?? Cheap generical over the counter lactaid pills before milk, ice cream, cheese etc . Oh and my son & his father - over 30 years later - have never again had a good or close relationship. My son's 4 siblings were so upset over how my husband treated me their brother when he was so sick almost every single day that they too have a pretty bad relationship with their father. You did a great job on our family Dr. Berry

    I've been taking my son to Dr. Berry since infancy, he's 13 now. My sister takes her kids here a…read morewell. We couldn't be more happier with Dr. Berry and his staff, he listens and is extremely knowledgeable. Couldn't be happier. I'm 8 months pregnant and will be taking my new baby here as well. Thank you Dr. B.

    Corona Summit Surgical Center

    Corona Summit Surgical Center

    3.8(47 reviews)
    6.5 mi

    Had to take my boy here a few months ago since he broke a bone during practice. This building is…read morelocated by the Monster building off the E-91. The staff is extremely friendly and their patient care is top notch!! The anesthesiologist comes in before surgery to explain the risks. There is a very nice comfortable waiting room you can wait in for the duration of the surgery. I didn't wait long (maybe about an hour), and then the surgeon notified me that the surgery went well. The whole process was surprisingly quick! We were in and out within 3 hours. In the evening, the surgeon called me to ask how Maui was doing. Very good service and compassionate care!! Highly recommend!

    This place was great. Everyone was so nice and professional. I really appreciate how they treated…read moreme the entire time. I didn't get the clerks name as I was anxious and really into my head since this was my first time having a procedure, but she was very pleasant. I started to calm down as Megan the preop nurse took me back and was very thorough with explaining everything. Kevin the intraop nurse helped me forget what was going on by talking to me about the NBA Championships(I'm rooting for the Pacers, but not mad if Thunder takes it). Thank you Kevin. The recovery nurse, Marissa was very comforting after the procedure. Her discharge education was clear. Appreciate that. Thank you to the Anesthesiologist, Dr. Nguyen. I was most nervous about that as I have never been put under. After speaking with him, my nerves were pretty much gone. A final thank you to Dr. Tam. I really appreciate your bedside manner. Everything felt smooth and efficient.

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    Corona Summit Surgical Center - My beautiful strong son before surgery

    My beautiful strong son before surgery

    Corona Summit Surgical Center
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    My sweet baby before surgery

    Pejman Solaimani, MD - Riverside Digestive & Liver Health Clinic

    Pejman Solaimani, MD - Riverside Digestive & Liver Health Clinic

    3.1(16 reviews)
    9.1 mi

    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!

    It is not a patient centered care office. They are hard to reach by phone. Most of the time one of…read moregals answers the phone with a generic greeting and mumbles as she puts you on hold without letting you get a word in. Then youre on hold for about 5-10 minutes...

    United Gastroenterologists - gastroenterologist - Updated May 2026

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