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    John Clemmons Jr, MD

    3.4 (11 reviews)
    Closed 8:00 am - 4:00 pm

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    4 months ago

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    9 months ago

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    2 years ago

    Excellent care. Respectful and kind connection with patients. Been a patient for nearly 20 years.

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    6 years ago

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    Dr. Carlos Ferrari

    Dr. Carlos Ferrari

    5.0(1 review)
    10.2 miMemorial

    Dr. Ferrari saved my life, he's such a kind, gentle person. He preformed Vertical sleeve…read moregastrectomy (VSG) on me March 5, 2018 and to date I've lost 60 lbs. Surgery was quick and easy, no pain. Easy recovery! He really saved my life and I cannot think him enough for that, I know it's what he does for a living but I am so thankful for how easy he made my experience! o

    From the owner: Dr. Carlos Ferrari, MD FASMBS is a Board Certified surgeon , with 20 years and more than 5000…read moresuccessful bariatric procedures done in Houston/Katy Texas. All procedures are done with the latest Robotic minimally invasive techniques. He performs procedures approved by ASMBS: gastric bypass, sleeve gastrectomy, duodenal switch and he has special interest and experience in revisions of previous failed bariatric surgeries. His practice philosophy is to provide individualized, quality care to his patients and his patient load allow him the time to provide detailed ,personalized care to his patients before recommending a procedure. He strongly believes that a good relationship between a doctor and patient is essential for quality care, and that they must work together in order to achieve the best possible results. He is in network and accepts all mayor insurances and his staff will verify benefit and coverage before appointment . Please ask for alternative forms of payment for self pay patients. Patient calls are answered by a live person during office hours, and 24/7 by his answering service during night and holidays. To check if you are a candidate for bariatric surgery or to set an appointment please call our office.

    Digestive and Liver Specialists - All that great food has led me here

    Digestive and Liver Specialists

    3.9(19 reviews)
    10.2 miMemorial

    I have been a patient of this practice for years. I currently use Dr. Spinn and could not be…read morehappier. I am impressed with his thorough approach and kind bedside manner. A real plus is his Nurse, Kelly, is very responsive and helpful. I highly recommend Dr. Spinn !

    I have been using this practice and Dr Nguyen for a number of years. She has done both of my…read morecolonoscopies. I have had polyps so I go every 5 years. I made an appointment in June or July in preparation for another colonoscopy this year. The earliest date available was the end of August. Less than 48 hours before my appointment I received a phone call from someone that said they were having trouble verifying my insurance. My insurance hasn't changed. However, she then told me that the practice no longer accepts Medicare. I don't know if it was my Medicare plan or all Medicare plans. She didn't offer any further explanation, just told me that I couldn't see the doctor. I asked about paying out of pocket, and she just said, 'No'. The doctor is great! I know she's been with this practice for a long time. In my case they had all of my insurance information since the last colonoscopy, nothing had changed. I received no less than five robocalls informing me that I was due for a colon screening this year. If they were no longer accepting my insurance plan, I should not have been able to even schedule an appointment. The only contact I should have received was an alert informing me that my insurance was no longer being accepted by the practice. Now I'm left to 'shop' for a gastro-doc. Not happy.

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    Memorial Hermann Memorial City Digestive Health Center

    Memorial Hermann Memorial City Digestive Health Center

    5.0(1 review)
    10.3 miMemorial

    This was one of the two places my doctor performs colonoscopies. I chose this location because of…read moreits proximity to Memorial Hermann Memorial Hospital, in case something went wrong. Hey, I'm a realist & things happen beyond our control so the clinic being a part of the hospital was a big plus to me. We arrived at my appointed time. The front desk ladies were awesome & checkin was easy. We were shown to a waiting room & surprisingly my name was called a very short while later. I was shown to my private bed & the admitting nurse went through all the paperwork with me, I changed into a very fashionable gown & she popped in the IV (she was a good stick, the IV was in on the first try & did not leave a bruise!). After another short wait, H gave me a kiss & I was on my way. I was wheeled into the room where the procedure wad top take place. There were a few people there, all busy seeing things up. They greeted me warmly. This is when I decided to close my eyes because I did not want to see the tools & whatnot they were laying out. The next thing I knew I was waking up & H was holding my hand. I was told the prep was the worst part of a colonoscopy & it's true. Whatever drug they used worked wonders without leaving me woozy & unsteady. I felt good enough to go out for breakfast. It's like nothing happened. Easy peasy. The staff at this clinic are phenomenal. The nurses are the best & they are all angels! Caring & empathetic, these women & gentlemen were top notch. For something I was not looking forward to & worried about, it turned out to be a very nice experience.

    John Clemmons Jr, MD - gastroenterologist - Updated September 2026

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