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    Sienella Thomaszadeh, DDS

    4.3 (51 reviews)
    Open 7:00 am - 4:00 pm

    Services - Sienella Thomaszadeh, DDS

    Cavity treatment

    Dental exams

    Teeth cleaning

    1 More Service

    Tooth filling replacement or repair

    Sienella Thomaszadeh, DDS Photos

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    6 months ago

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    7 months ago

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    10 months ago

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    5 months ago

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    5 months ago

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    2 years ago

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    6 years ago

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    3 years ago

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    3 years ago

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    3 years ago

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    2 years ago

    Very friendly staff. Have never had problems rescheduling and appreciate the text reminders. Very professional as well.

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    3 years ago

    Great team great care . They got me in and out fast and were very good with my care and feelings.

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    6 years ago

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    4 years ago

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    4 years ago

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    4 years ago

    Comfortable office staff. Sienella is amazing.

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    4 years ago

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    4 years ago

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    5 years ago

    Excellent service as usual! The girls at the front desk were very helpful with my floss and whitening purchases also!

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    3 years ago

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    6 years ago

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    3 years ago

    the absolute best dentist I've ever been to and I've been to a few. I highly recommend.

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    6 years ago

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    6 years ago

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    6 years ago

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    5 years ago

    This Dentist and staff are amazing! I hate going to the Dentist but they are wonderful. Highly recommend!

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    5 years ago

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    6 years ago

    Wow I just had a terrible experience. I found the dentist to be less than professional. I do not recommend her at all

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    4 years ago

    I'm very happy with Dr. Thomaszadeh. She's great at what she does and her staff is too. Everyone seems happy and that's a good thing.

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    6 years ago

    Great service today from receptionist to dental hygienist, Elizabeth Ray. They make you feel special. Ed

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    5 years ago

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    5 years ago

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    5 years ago

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    5 years ago

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    6 years ago

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    5 years ago

    The office is amazing! Super Covid compliant and friendly! I really appreciate the warm feeling you get there....oh and super clean teeth!

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    5 years ago

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    6 years ago

    Great dentist and hygienist staff! Would recommend to anyone! Always a professional feel, but also personal touches.

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    6 years ago

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    5 years ago

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    Page 1 of 2

    Ask the Community - Sienella Thomaszadeh, DDS

    Review Highlights - Sienella Thomaszadeh, DDS

    Thomaszadeh was thorough and clearly explained what she was seeing and what options were available to me.

    Mentioned in 17 reviews

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    Atascadero Hills Dental - Front Desk

    Atascadero Hills Dental

    4.5(88 reviews)
    1.6 mi

    Wonderful man. Brilliant, kind, friendly (if you need that). Again they took me right away and…read moretreated me so kindly. No extra charges. Just great people.

    My initial review of this office was very positive. I had been a patient elsewhere, and upon coming…read morehere, I was immediately impressed with the technology. Fast, non-invasive x-rays, the ability to fabricate crowns in-house, huge staff...felt like it was a step in the right direction. Fast forward to now, and I feel differently. I had one crown done, as a tooth had cracked. I was given a $1,000 estimate with the standard disclaimer that I'll be responsible for the actual amount. No problem, I know the drill, as I have had dental work done in the past. The problem was their "estimate" was 100% off, and now I'm being asked to pay $2,000 for a crown that was supposed to be $1,000. From my perspective, if my job was to deal with insurance companies on a daily basis and I had hundreds of patients and thousands of EOBs, I should be able to get closer than being half-way to the actual price. I can't help but feel like I was taken advantage of. Had I known the actual price, I likely would have shopped around and had the work done elsewhere. On my next cleaning visit, the dentist told me I needed something like 6 or 7 MORE crowns. How many of those are medically necessary, and how many are to add billable income, since they cost so much more than insurance covers, AND can be done in-house?

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    Atascadero Hills Dental
    Atascadero Hills Dental
    Atascadero Hills Dental - Before & After

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    Before & After

    Sienella Thomaszadeh, DDS - generaldentistry - Updated July 2026

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