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    Sigma Dermatology

    4.2 (15 reviews)
    Closed 9:00 am - 5:00 pm

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    6 months ago

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    2 years ago

    Dr. Zang was very professional and was able to see within 15 min as a walk in. Might be that particular day, but my wife's visit went well.

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    2 years ago

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    4 years ago

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    3 years ago

    Great experience with Sigma dermatology! Both doctor and staff are super nice and friendly. highly recommended!

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    4 years ago

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    Review Highlights - Sigma Dermatology

    Zang as my dermatologist for over 3 years now, and my experience with her treatments has been beyond satisfying.

    Mentioned in 13 reviews

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    Jian Cui Dermatology, PC - Acuiderm

    Jian Cui Dermatology, PC - Acuiderm

    (37 reviews)

    Downtown Flushing, Flushing

    I would give this place 0 star if I could, they have horrible business practices and is a very…read moreshady business. I came here at some point over 6 years ago, and recently received a letter (at an old address that thankfully the person still had my contact). It was a bill IMAGINE getting a bill after 6 years of your treatment, I had health insurance of course but at this point it's hard to claim back the money and discuss with my insurance because it was so long ago Not to mention, the bill had a very generic description and I don't even recall ever getting that services. Now I'm getting mail saying I have to pay within 30 days or they will send it to collections, imagine if i never got the mail ... then your credit would be destroyed by simple negligence that this practice has Save yourself the headache, the clinic itself is not good, they didn't solve my problem after coming here for like 2 years and their business practices is even worst. If you don't want your a random medical bill to show up and destroy your credit 5-10 years after service, I recommend you go elsewhere Edit 1 (The business responded to me on Google maps): The business commented "It was your responsibility to pay what you owed 6 years ago, wasn't it?". This is exactly what is wrong with the business and why you should avoid them, they admit no fault on their side, blames YOU for their negligence, and thinks they are in the right. I have no problem paying what I owe, the issue is with this business's complete negligence towards timely billing for their services and then subsequent agression to make you pay. It almost seems like they intentionally bill you more than half a DECADE later just so you can't dispute any bill they give you because what health insurance provider would let you despite a bill that old? To clarify cause it seems like you didn't bother reading my original review or you didn't understand it, my issue is 1) your practice does not do timely billing evident by the half a decade late billing 2) when you do bill half a decade later, you don't provide clear documentation of what services was provided nor is there anyone I can talk with about such charges 3) if I moved addresses and now live somewhere else, there is no way for me to have received the bill and then it would've went to collection, permanently destroying my credit because of YOUR NEGLIGENCE Stop the blaming, stop making excuses and do better. This was clear negligence on your side and your refusal to admit wrong is the issue

    Beware!!! Avoid at all cost. Only care about money. Asked me…read morefor co-pay even though I told them that we have met our out of pocket expenses for the year. Front desk has no clue what they are doing. Rude receptionists, don't understand proper english. They don't admit they are wrong. Very bad experience! Please avoid.

    Wenhong Zhou, MD - Better angle pic

    Wenhong Zhou, MD

    (38 reviews)

    Downtown Flushing, Flushing

    Wastee my time coming here just for them to tell me they don't perform the cosmetic procedure i…read moreneeded when they could've told me that over the phone But i get it you wanna suck money out of my insurance provider for my visit

    1. You mentioned that the "consideration and effort" is generally very well appreciated by…read morepatients. But when I researched the eye drops you prescribed me, there were research/clinical studies that showed patients who had their WHOLE face turned red/destroyed by this product. 2. You mentioned, "Treatment options for facial redness in rosacea are the same whether you consider it cosmetic or not" But after you prescribed me an eye drop and I came back with destroyed face/worsened redness, you claimed it's ONLY for cosmetics, which means that I should ONLY use it when I need it for cosmetic purposes, not to treat it. 4. You mentioned, "Occurrence of side effect or unwanted result is frequently seen and is NOT a mistake in care. This is also why our patients are informed to hold medication and contact the clinic right away if they develop any side effects or concerns after starting a medication." LIES. When did you ever inform me of such things, that I need to "hold medications and contact the clinic right away" if I develop any side effects or concerns? NEVER. You only told me that once I put it on, it would go away, and that was it. And due to your negligence, that was why I had developed extreme redness. 5. You mentioned, "This is an inherent part of their care and has nothing to do with age or immigration status. We certainly NEVER punish our patients for giving feedback as referred by "repercussion" in your review. So please do not make any unfounded misleading negative statement as such." I never mentioned my age or immigration status to infer that you would punish patients for giving negative feedback. Please stop twisting my words that I inferred you were punishing patients for leaving feedback to turn yourself into a victim. I'm only mentioning them ( age & an immigrant) to further emphasize the sufferings I endured due to your "care" from my difficult circumstances (young age, didn't want to speak up as an immigrant). To this day, you only care about protecting your business, blaming your customers rather than owning up to anything. What if it's your face that was permanently ruined/turned red by another dermatologist, and you have to spend the rest of your life covering it up? The first thing in patient care is DO NO HARM.

    Metro Dermatology Flushing - Exclusive August Promotion - Oligio!
(8/1/2023 - 8/31/2023)

    Metro Dermatology Flushing

    (40 reviews)

    $$$$

    Murray Hill, Flushing

    I've been seeing Dr. Sun since I was still a minor; It was only until recent months I started…read moreseeing Dr. Hu who is also at this office. The wait is as expected from the lobby waiting area, then transitioned into individual waiting rooms. Your intake is done by an assistant before seeing the doctor. My experience through the years is that, you should expect to spend a few hours here in waiting, this is a very busy office. But the doctors are thorough and informative, besides educational. I've been dealing with eczema my whole life, and Dr. Sun have given me an encyclopedia worth of print outs on what products and materials my skin can be in contact with. (This ranged from bathroom stuff, to cosmetics, skin care, laundry products, and clothing..etc.) I wish my parents were equipped with all this when they had me lol And having visited other offices throughout the years due to schedules from different occupations ... I still end up back here. Every office has its pros and cons, but if you follow the instructions, then they're peachy. And yes, I am aware of the late fee thing they enforce on patients. Time is money, so even if I dont like it, I understand it. Lastly, I recently started light therapy treatment for my eczema. I was advised to do this treatment 2-3 times per week, with at least a day gap per session; And by the 8th session to schedule an appointment to see the Doctor to judge the progress of the treatment. I had to buy this UV protective goggles for $10 and it has to be with me for every session. (No goggles, no treatment) No metal should be on you. The first session was 58seconds and will be increasing gradually to make sure my skin dont get burned. (If you're doing cash, its $60 per therapy treatment)

    By far one of the worst dermatologists! I've been here 3 years ago and had the worst experience cus…read morethey made me wait over an hour WITH an appointment. Gave it another try today and absolutely regretting and won't be returning. AVOID AT ALL COSTS. Waited 30 mins and still couldn't get seen. I took the day off JUST to not be seen. Not only that, they said i couldn't get treatment (chemical peel) because i would need to wait 2 weeks for them to process the insurance. They couldn't tell me that when I made the appointment??? Such a waste of time and NEVER returning. I'd never recommend this spot to ANYONE.

    John A. Buza, MD, MS - John A. Buza III, MD

    John A. Buza, MD, MS

    (5 reviews)

    Flushing, Queensborough Hill

    I really can't say enough about Dr. Buza's honesty from the first visit. He had me try other…read moreoptions before electing surgery. He referred me to a pain management specialist and he was amazing. He gave treatments that helped with my pain for over a year along with PT unfortunately my body didn't the tolerate as accepted but not as long as it should've. I then after almost two years later we discussed surgery. I was nervous because I never had surgery but his honesty and compassion put me at easy. He explained the steps clearly and told me what to expect when having the full lumber area worked on. From the check outarea Brianna took care of everything for me. Then when surgery was completed and I was admitted for a week every one from Dr. Buza his full PA staff and nurses made me feel so special and made sure I was comfortable in every aspect and discharged with full instruction on handling the worst 2 weeks of pain and discomfort. He sent nurses, OT,PT to my home along with all medical equipment I would need. I felt like a VIP PATIENT and would highly recommend that team especially Dr. Buza. My recovery is going great and love that my quality of life without pain is a blessing. With humble gratitude and appreciation to this great surgeon and his whole team. Thank you with all my heart Dr. Buza. I could not have done this without you. I soooo appreciate you. I give you the most stars I can give. God bless all of you. PS the bone stimulator brought personally to my home from rep Christina I couldn't end this review without mentioning her. She is the sweetest person I have ever met. Kept checking on me explained how to use it. I'm adding her to this excellent team With great respect, gratitude and appreciation Evelyn W.

    For me, Dr. John Buza is one of the best doctors of the spine. In addition to his wonderful…read moreattention, professionalism and respect for the patient. I recommend him and I give him 5 stars plus

    Sigma Dermatology - dermatology - Updated May 2026

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