1. Howard Lui DDS

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    Vallejo, CA

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    Howard Lui DDS

    4.3 (6 reviews)

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    Mounir Guirguis, DDS - MAK Dental

    Mounir Guirguis, DDS - MAK Dental

    4.0(21 reviews)
    1.4 mi

    The best thing about this place so far is that everyone is very nice and The staff seem very…read moreefficient comma friendly and competent. Plus they take Medi-cal dental. I haven't had any work done yet, but. I got my record set up and I can always update further once I've actually had my first cleaning, fillings work, etc. The office is clean, bright, and nicely decorated. The doctor was very patient and friendly in explaining the treatment needed for my complicated dental situation.

    I rarely leave reviews like this, but the way this office handled my appointment -- and especially…read morethe way the situation was handled once I arrived -- was completely unacceptable. I had a TWO-HOUR root canal appointment scheduled for August 31st. When the appointment was originally scheduled, I was specifically informed that if I needed to cancel or reschedule, I was required to give the office 72 hours' notice. Fair enough. I understood and respected that policy. Then, on August 25th, the office contacted me and offered me an appointment for that same afternoon. I explained that I couldn't make it that day, and the staff member told me, "We'll see you on the 31st." I said okay. At that point, there should have been absolutely no confusion about whether I intended to keep my appointment. Fast forward to Friday: I was at WORK and apparently missed their request to "confirm" my Monday appointment. I was later informed that because I did not respond between approximately 2:22 PM and 3:45 PM, they cancelled my TWO-HOUR appointment. Let that sink in. Patients are expected to provide this office 72 HOURS of notice to cancel or reschedule, yet this office apparently gave me approximately 83 MINUTES during a workday to respond before deciding I no longer wanted an appointment that I NEVER cancelled. I then drove OVER AN HOUR to this office Monday morning expecting to receive the treatment I had scheduled, only to find out after arriving that they had cancelled it. When I made it clear that I had come for my scheduled appointment and told them they needed to figure out how to accommodate me, the OFFICE MANAGER told me I would have to "sit in the lobby all day." Then the front desk employee told me, "Your insurance approved it, you might as well just come back another day." Excuse me? My insurance approving the procedure has absolutely nothing to do with the issue. My time matters. My work schedule matters. The gas and time spent driving over an hour to their office matters. The fact that I arranged my morning around a TWO-HOUR medical appointment matters. "You might as well come back another day" is an incredibly dismissive response to a problem that your office created. I did not miss my appointment. I did not cancel my appointment. I did not request to reschedule my appointment. I SHOWED UP FOR MY APPOINTMENT. The office cancelled it without my authorization because I did not respond to a confirmation request quickly enough while I was working. If a patient cancelled a two-hour appointment with 83 minutes' notice, would this office consider that acceptable? Of course not. Yet apparently that level of courtesy does not have to go both ways. And telling a patient who has already driven over an hour that they can either "sit in the lobby all day" or "come back another day" is not customer service. It is dismissive and disrespectful. Had I been clearly informed when scheduling that failure to respond to a confirmation message within a specific timeframe would automatically cancel my appointment, I would understand. But that was NOT the policy explained to me. The policy explained to me was that I needed to provide 72 hours' notice if I chose to cancel or reschedule. I honored my appointment. I showed up. This office did not. The root canal isn't even what left a bad taste in my mouth -- I never got far enough to have one.

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    Mounir Guirguis, DDS - MAK Dental
    Mounir Guirguis, DDS - MAK Dental
    Mounir Guirguis, DDS - MAK Dental

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    Howard Lui DDS - endodontists - Updated September 2026

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