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    David B Rosenfeld , MD

    4.7 (80 reviews)
    Closed 8:00 am - 4:00 pm

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    Page 1 of 2

    Ask the Community - David B Rosenfeld , MD

    Review Highlights - David B Rosenfeld , MD

    Both the Doc and Tanya have been by my side anytime I've needed them through the recovery.

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    Alister A George, MD

    Alister A George, MD

    3.2(69 reviews)
    3.8 mi

    Excellent physician. Courteous staff. Nice surgical center. I've been seeing Dr George for about…read more15+ years. I highly recommend him. He is busy but he's worth seeing!! Very through and will solve your digestive issues!

    This is long overdue. Not sure if yelp was around in 2003. Dr George wasn't at his new location…read morewhich BTW sits on an old gasoline lot. His office was at another location. Regardless I remember getting my first colonoscopy at a health south facility. Remember them, I do, from the moment of laying down and having to plead with them to give me anesthesia as they were not sure of the insurance I had would pay for it, thankfully they must have caved, as I don't remember the procedure. Which was the only thing I can be thankful that happened that fateful day. No, when I came to Dr. George came by, didn't stop and dropped off a color photo of a tumor in my colon. I remember asking "what do I do?" He responded on his way to his next procedure "you go to a general surgeon". This was my last interaction/only interaction with Dr. George. Then the nurse informed me that I would likely be wearing a "colostomy bag" going forward. This is 100% how it happened and I was so angry. I was 30 years old and coincidentally this happened on my daughter's 1st birthday. The lack of bedside manner by this POS was mind blowing. I did get my Colon resection by a stud Colon rectal surgeon and wonderful chemo care from a great Oncologist. I'm 54 now and have had dozens of clear colonoscopies and never ever have had this type of treatment. I have had other procedures as well and some that required hospital stays, anesthesia, you name it I've been very fortunate for the care that I've been given. But I'll never forget how pompous and uncaring George was, and I really would encourage you to go to Dr. Daneshagar, who is a lovely man with a local practice.

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    Alister A George, MD - Medical Building

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    Advanced Gastroenterology - Exam Room

    Advanced Gastroenterology

    3.7(84 reviews)
    0.8 mi

    What an amazing awesome GI Specialist! Dr Simoni is not only a professional, skilled, experienced…read morespecialist, he's also a very caring and kind-hearted human being! The staff are professional and efficient and caring! I give Dr Simoni my highest recommendation! He is a knowledgeable and marvelous physician! J. Dender, MD Encino

    RIPOFF! Do Not trust this Doctor. I do not owe the Advanced Digestive Center of Southern…read moreCalifornia any money, yet they have sent a collections agency demanding I give them money! When I left their office many years ago, my balance was zero. Me and my Insurance Company have paid all there is to pay to the Advanced Digestive Center of Southern California. We have paid every bill and co-pay on time and in full. I have called their billing department to clear things up but the billing representative gave me incorrect information and started listing days, times and procedures that I had never been a part of. I told her she was terribly mistaken that her information was incorrect. I also told her my balance was Zero. She said ok, someone would call me back, but they never did. After reading their YELP reviews, I noticed their billing department has great difficulty with billing their clients correctly. I can see from their Yelp reviews that many, many people have the exact same complaint that I do: billing for no reason, billing incorrectly, etc. Also their employees are terribly rude to customers and could care less about everything, especially YOU. I think it is terrible this company does this same thing to other folks. Like I said, I do not owe this company any money.

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    Recovery Area

    Karen Simon, MD - Karen Simon, MD

    Karen Simon, MD

    3.0(17 reviews)
    15.7 mi

    I received email from Dr Simon office to scheduled my appointment. Which I did called last Aug 2025…read moreand they scheduled me for Dec 12 consultation. Comes this day went to Wenkle way turned out the office moved, looked on line for new office at Gonzales . Went there to find out they canceled my appointment because my phone number was incorrect. I do not have a valid phone on there file.

    I am literally in tears writing this review. I cannot make up the way I was so badly treated from…read morethis so called " health CARE" provider. Please young ladies beware!!! I was referred to this office by my main physician back in October of 2024. I went through the whole process of being approved, which took months (totally normal). Once April comes around they finally call me to set up an appointment and just like everyone else in America I was working when they called. They left me a voicemail and I called them back everyday for 3 weeks! Yes 3 weeks, I have call logs to prove it, I finally get an answer and schedule an appointment. Once it's time for the procedure I was instructed to get one of their kits . I arrived to their office off of Lombard in Oxnard, ca. The office was closed down and no one was there. They failed to mention to their patients that they were moving locations. Thank god they had the decency to leave a note because I would've been so confused (lack of communication). I go the other office and the girl in there was so rude she literally was treating me like I was a disease. Had a blank stare when I asked questions and just handed me the kits not explaining anything to me! This is all new to me, I am 35 years old I shouldn't even be in this office because I feel I am too young to be having issues. So I am already feeling scared and completely helpless and to come into this office and get treated like a disease is completely un empathetic . These people are supposed to have compassion and empathy. This girl with colored eyes didn't care if I am completely scared or am feeling helpless. On top of all of this I have my 2 year old son with me trying to be friendly with her and she is just giving him dirty looks. So I left upset, not feeling confident at all about the place that has me under their care, and full of unanswered questions. Now it's over a month after the procedure and I have crickets. No follow up appointment, no confirmation that I am cancer free, most importantly, no confirmation that I am going to be okay. So I call today trying to get some answers because obviously the issues I have aren't going away with just a biopsy. It took me 4 calls today to get ahold of someone to the point where I am literally crying my eyes out because all I want are some answers. On the 4th call they finally transferred me to the nurse who works with the actual doctor and she told me that everything is in my portal. That's funny I didn't even know I had a portal. So they send my information to a place where I have to figure out on my own with documents that I can't understand. When I asked her to please explain the results because this is all terminology that I do not understand because this is not my line of work. She said just come back in 10 years. So what I am getting from all of this is, I am not worth anymore money to them so they not only didn't take the time to call me about my results that I have been so desperately waiting for but now I realize that I am worth no more effort to them because of the results. These so called "healthcare" providers who are literally paid to care about people and their state of being couldn't care less. They couldn't even call me to tell me they sent me a prescription. I still till this day don't know what it's for. I pray these people gain some empathy for people who walk through their doors because I was treated less than human. My employer who I have been with for 15+ years pays a pretty penny for my health insurance so this isn't something for free! If these are the people who are in charge of peoples health and well being, god help us all.

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    Karen Simon, MD
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    David B Rosenfeld , MD - proctologist - Updated May 2026

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