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    Mark T. Brune, MD

    5.0 (1 review)
    Open 8:00 am - 5:00 pm

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    Gastroenterology Consultants - Waiting room.

    Gastroenterology Consultants

    2.6(81 reviews)
    38.7 mi

    I got an appointment within a week which was great The Dr…read more was able to diagnose my problem within a week & provided a treatment plan The Dr. prescribed 2 medications to take care of my problem The RX says they only got 1 prescription instead of 2. (No problem..accidents happen) 3 STARS because it is impossible to get ahold of the office to resolve my prescription issue. I've called, left voice messages & sent messages through the patient portal with no response.

    A Prime Example of Nevada Healthcare at Its Worst ​If you…read morevalue your time, money, and quality of life, I strongly advise avoiding GI Consultants in Reno, specifically Jesse Viner and Dr. Harrison. I was referred to this practice for severe post-op complications, including gastroparesis and daily vomiting. Instead of receiving comprehensive care, I have been met with a complete lack of empathy, blatant disrespect for my time, and administrative greed. ​Initially, Jesse Viner seemed attentive, but the standard of care quickly deteriorated. He ordered an EGD, which was performed by Dr. Harrison. Afterward, Dr. Harrison dismissively told me my vagus nerve was likely damaged during my previous surgery, offered absolutely no medical options to improve my quality of life, and simply recommended cannabis. When I later asked Jesse Viner to refer me elsewhere because I was out of options, he flat-out refused and told me to go back to my original physician. ​The disrespect for patient time at this office is staggering. On one occasion, the staff canceled an existing appointment specifically to accommodate Jesse Viner's schedule. They made me his first patient of the day at 7:00 AM, yet I sat there for nearly two hours and wasn't seen until almost 9:00 AM. I find it ironic that I was forced to accommodate his schedule, only to have my own time completely disregarded. ​The final straw has been the bureaucratic gatekeeping. My original physician, who initially wanted an EGD with dilation, sent a new order to GI Consultants specifically requesting Dr. Fang perform the procedure. I waited two weeks in silence from Viner's medical assistant while continuing to throw up daily. I finally had to physically go into the office to get answers. I learned that Jesse Viner had updated his notes and refused to process the order, claiming the last EGD was "too recent." Rather than collaborating with my referring doctor, he is forcing me to pay for yet another office consultation just to "justify" why I need the procedure. ​To add insult to injury, the front office informed me that I had to pay a $50.00 fee just to expedite my request for care. ​I have repeatedly communicated to this staff that my quality of life is severely diminished and that I am vomiting daily, but it clearly has no bearing on how they operate. This practice seems entirely focused on wasting patients' time and collecting extra consultation fees rather than providing actual medical care. I would never recommend this practice or this provider to anyone in Northern Nevada. I wish I could list negative stars.

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    Matteoni Christi, MD

    Matteoni Christi, MD

    3.4(5 reviews)
    38.7 mi

    Without question, the very Worst, and uncompassionate, MD I have ever dealt with. Extremely…read moreunprofessional, unkind, and uncompromisingly downright cruel. I was a 68-yr old disabled senior, who met Ms Matteionni at Renown Hospital, when she diagnosed me with probable gall stones. I am homebound, and with limited mobillity and transportation, she permenently ejected me from Gastroenterology Consultents, which I had gone too for over 10 yrs, without incident. However, due to my conditions, Covid-19 etc, I missed 1 appts, or was late, and with a total of 3 incidents in exactly 3 yrs; in one case, my appt was at 2:00 pm, and we were expected there 15 min early, but I was taking an UBER and got there at 2:05 pm. Her Office then not only refused to see me, but made sure that I was permently terminated from the GE Consultments without me being able to defend myself, or have any recourse whatsoever. Not once, had I EVER been late to the appt I had at GE other than her, and therefore I now am unable, without great duress to go way South of town, many miles away from home. Being now 70, Homebound, I see nothing of the kind and professional attributes that her patients see in her. I have known more than one persons in the area, who feel and have experienced her nasty, retributive manner. If you wish to partner with such a narcissist, I feel for you.

    The only female GI doctor in town. She comes from a great family of medical personnel & has…read moresuperior bedside manner. She is will take the time to listen to her patients and prescribe a course of treatment that is in their best interest. The office is busy & communicating with her when you don't have an appointment is almost impossible. Don't hold that against her because she is a very good doctor.

    Mark T. Brune, MD - gastroenterologist - Updated August 2026

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