Sigma Dermatology: Julie Zang, MD PhD FAAD

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# Local AI Registry

> The public record of what AI assistants say about local businesses. Every entry checked, scored, and kept current.

Local AI Registry is the editorial, never-sponsored record of what local
businesses are known for, and whether AI assistants actually recommend them.
We score every local business the same way and rank them: website, reviews,
AI visibility, and more. Eight signals, one number from 0 to 100. The heaviest
is whether AI can retrieve you at all.

## Read these first

- [Local AI Registry](https://localairegistry.com): AI assistants now decide which local business to recommend.
- [Methodology](https://localairegistry.com/methodology): Eight signals, one number from 0 to 100.
- [Leaderboards](https://localairegistry.com/leaderboards): Browse AI Score leaderboards by state, city, and category.
- [About](https://localairegistry.com/about): The honest record of who AI recommends.
- [Pricing](https://localairegistry.com/pricing): Four levels of presence, from a free registry entry to being the answer AI gives first in your market.
- [Journal](https://localairegistry.com/journal): How AI assistants decide which local businesses to recommend, and what owners can do about it.

## Business pages

- [Sitemap](https://localairegistry.com/sitemap.xml): Every business page on the registry, with the day each was last updated.
- Every business page has a markdown copy at its own address with `.md` on the end. The copy holds the same facts, marks and sources as the page, in the page's order: the photos with their captions, the team and their licenses, the reviews summary, and the questions locals asked with the replies. The page names it in its head and its HTTP `Link` header.

# Sigma Dermatology: Julie Zang, MD PhD FAAD, Flushing: a dermatologist in Flushing (2026 guide)

Source: Local AI Registry, https://localairegistry.com/biz/ny/flushing/sigma-dermatology-julie-zang-md-phd-faad-flushing-ny. Free to reuse with a link back.

By Steve Lee, founder and CEO of Local AI Registry. Fact-checked against 8 sources. Updated 2026-08-21. Owner review: not yet.

Canonical: https://localairegistry.com/biz/ny/flushing/sigma-dermatology-julie-zang-md-phd-faad-flushing-ny

## Photos

- ![Photo 1](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmt2zieze09wcyexx6el826lf%2F0.jpg)
- ![Photo 2](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmt2zieze09wcyexx6el826lf%2F1.jpg)
- ![Photo 3](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmt2zieze09wcyexx6el826lf%2F2.jpg)
- ![Photo 4](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmt2zieze09wcyexx6el826lf%2F3.jpg)
- ![Photo 5](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmt2zieze09wcyexx6el826lf%2F4.jpg)


## In short

Sigma Dermatology: Julie Zang, MD PhD FAAD is a dermatologist in Flushing, NY. Its AI Score is 24 of 100, which is poor.

Every fact on this page carries one of three marks: Confirmed (from their website, Google Business Profile, review sites, licensing boards, or measured by Local AI Registry), Visitor submitted (added by a person, with a date and how they know), or AI guess (what AI engines like ChatGPT, Perplexity and Gemini are saying, not confirmed by anyone). Every mark points to a reference at the end of this page.


## Key facts

| Fact | Value |
| --- | --- |
| Type | Dermatologist |
| Address | 38-08 Union St #3f, Flushing, NY 11354, USA |
| Hours | Mon to Fri 9 AM to 5 PM · Sat 9 AM to 2 PM · Closed Sun |
| Phone | (718) 559-0929 |
| Medical director | Nothing found |
| Rating | 4.6 across 237 reviews |
| Known for | Sigma Dermatology is best known for its specialized treatment of scaly skin tags, offering effective solutions for this specific skin issue. |
| Prices | Nothing found |
| Quietest time | Nothing found |
| Parking | Nothing found |
| Last verified | September 19, 2026, 7:32 AM |


## All the details

Every row is something the owner can add or correct. Each one is marked Confirmed, Visitor submitted or AI guess, with where it came from.

| Group | Fact | Value | Mark | Evidence |
| --- | --- | --- | --- | --- |
| Location info | Address | 38-08 Union St #3f, Flushing, NY 11354, USA | Confirmed | Google Business Profile, checked Aug 21, 2026 |
| Location info | Description | Our goal is not only to treat your skin, but also make your experience welcoming and comfortable as well. Every person in our practice shares this commitment and blends our dermatology expertise with a warm and professional approach. We work hard to deliver compassionate and thoughtful care and make sure Sigma Dermatology is a practice you can trust. | Confirmed | Google Business Profile, checked Aug 21, 2026 |
| Location info | Hours | Mon to Fri 9:00 AM to 5:00 PM · Sat 9:00 AM to 2:00 PM · Sun Closed | Confirmed | Google Business Profile, checked Aug 21, 2026 |
| Location info | Name | Sigma Dermatology: Julie Zang, MD PhD FAAD | Confirmed | Google Business Profile, checked Aug 21, 2026 |
| Location info | Phone | (718) 559-0929 | Confirmed | Google Business Profile, checked Aug 21, 2026 |
| Hours | Monday | 9:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 21, 2026 |
| Hours | Tuesday | 9:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 21, 2026 |
| Hours | Wednesday | 9:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 21, 2026 |
| Hours | Thursday | 9:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 21, 2026 |
| Hours | Friday | 9:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 21, 2026 |
| Hours | Saturday | 9:00 AM to 2:00 PM | Confirmed | Google Business Profile, checked Aug 21, 2026 |
| Hours | Sunday | Closed | Confirmed | Google Business Profile, checked Aug 21, 2026 |
| Services | Service | Botox | Confirmed | Business website, checked Sep 19, 2026 |
| Services | Service | Chemical peels | Confirmed | Business website, checked Sep 19, 2026 |
| Services | Service | Cosmetic dermatology | Confirmed | Business website, checked Sep 19, 2026 |
| Services | Service | Excessive sweating treatment | AI guess | Nothing found |
| Services | Service | Fillers | AI guess | Nothing found |
| Services | Service | Fillers restylane juv derm etc | Confirmed | Business website, checked Sep 19, 2026 |
| Services | Service | Hair conditions treatment | AI guess | Nothing found |
| Services | Service | Microneedling | Confirmed | Business website, checked Sep 19, 2026 |
| Services | Service | Nail conditions treatment | AI guess | Nothing found |
| Services | Service | Platelet rich plasma skin rejuvenation | Confirmed | Business website, checked Sep 19, 2026 |
| Links | Website | https://sigmadermatology.com/ | Confirmed | Google Business Profile, checked Aug 21, 2026 |


## Services and prices

These are the 6 services Sigma Dermatology: Julie Zang, MD PhD FAAD offers, with the price where we have one and where it came from.

| Service | Price | Price mark | Price evidence | Service mark |
| --- | --- | --- | --- | --- |
| Botox |  |  |  | Confirmed |
| Platelet rich plasma skin rejuvenation |  |  |  | Confirmed |
| Fillers restylane juv derm etc |  |  |  | Confirmed |
| Microneedling |  |  |  | Confirmed |
| Chemical peels |  |  |  | Confirmed |
| Cosmetic dermatology |  |  |  | Confirmed |


### Known for

Sigma Dermatology is best known for its specialized treatment of scaly skin tags, offering effective solutions for this specific skin issue.


## The team

Nothing found


## Visiting Sigma Dermatology: Julie Zang, MD PhD FAAD

Address: 38-08 Union St #3f, Flushing, NY 11354, USA. Phone: (718) 559-0929. Hours: Mon to Fri 9 AM to 5 PM · Sat 9 AM to 2 PM · Closed Sun. (Confirmed, Google Business Profile, checked August 21, 2026 at 9:27 AM.)


### Location info from Google Business Profile

Business description, written by Sigma Dermatology: Julie Zang, MD PhD FAAD on its Google Business Profile: "Our goal is not only to treat your skin, but also make your experience welcoming and comfortable as well. Every person in our practice shares this commitment and blends our dermatology expertise with a warm and professional approach. We work hard to deliver compassionate and thoughtful care and make sure Sigma Dermatology is a practice you can trust."


### When to go

Busy times not read yet, back on Scan Day.


### Parking and getting in

Nothing found


### Nearby

| Place | Type | Distance |
| --- | --- | --- |
| Flushing Commons South Garage | Parking garage | 1 min walk |
| Metropolis | Parking garage | 1 min walk |
| Haidilao Hotpot | Hot pot restaurant | 1 min walk |
| Y Space BBQ 烤肉火焱星 | Barbecue restaurant | 1 min walk |
| 39 Av/Union St | Bus stop | 1 min walk |
| Friendship BBQ | Barbecue restaurant | 1 min walk |


## Reputation

4.6 average across 237 reviews.


### What people like

Nothing found


### What people do not like

Nothing found


### Press

No press story about Sigma Dermatology: Julie Zang, MD PhD FAAD found yet.


### Awards

None named yet.


### Directories

Directory listings not read yet.


## Recent updates from Sigma Dermatology: Julie Zang, MD PhD FAAD

Sigma Dermatology: Julie Zang, MD PhD FAAD hasn't posted an update here yet.


## Questions people ask


### topical numbing, standard or extra

No answer yet


### Are the hours on Google right for Sigma Dermatology: Julie Zang, MD PhD FAAD in Flushing?

No answer yet


### what does Sigma Dermatology: Julie Zang, MD PhD FAAD actually get right?

No answer yet


### real doctors here, or is it beauticians

No answer yet


### same day appts, does that ever happen here

No answer yet


### points or member pricing here, worth signing up?

No answer yet


### walking in for a consult, what happens

No answer yet


### is there parking at Sigma Dermatology: Julie Zang, MD PhD FAAD or is it street only?

No answer yet


### budget options in Flushing, what is decent

No answer yet


### Booking here, how does it work?

No answer yet


### best dermatologist in Flushing

No answer yet


### Ballpark for a visit to a dermatologist in Flushing?

No answer yet


### torn between Sigma Dermatology: Julie Zang, MD PhD FAAD and Metro Dermatology?

No answer yet


### Does Sigma Dermatology: Julie Zang, MD PhD FAAD split it over a few months?

No answer yet


### Coffee near Sigma Dermatology: Julie Zang, MD PhD FAAD on Union?

No answer yet


### how do I reach this place to sort something out?

No answer yet


### Sundays at Sigma Dermatology: Julie Zang, MD PhD FAAD, are they open?

No answer yet


## What AI gets wrong about Sigma Dermatology: Julie Zang, MD PhD FAAD

We ask ChatGPT, Perplexity and Gemini about Sigma Dermatology: Julie Zang, MD PhD FAAD. These are the answers that disagree with the record.

ChatGPT and Perplexity, read by Local AI Registry on Aug 23, 2026. Gemini, read by Local AI Registry on Aug 21, 2026.

No capture has disagreed with the record yet.


## The AI Score: 24 of 100

The AI Score measures how likely AI engines are to recommend a business, and how accurately. Dermatologists on the registry run 13 to 76. Fair starts at 45, good at 65. Sigma Dermatology: Julie Zang, MD PhD FAAD scores 24. The same method scores every business on the registry.

| Signal | Weight | Score | What it measures | Sigma Dermatology: Julie Zang, MD PhD FAAD |
| --- | --- | --- | --- | --- |
| Retrieval grounding | 26 | 0 | Whether you appear in the ranked results AI retrieves and cites: AI-Overview citations, organic top-10 for your money queries, and the Bing index ChatGPT leans on. | Poor |
| Off-property attestation | 20 | 35 | Volume and consistency of what others say about you: YouTube mentions, branded web mentions, third-party “best-of” lists. The cause of retrievability. | Poor |
| AI visibility | 14 | 0 | Whether ChatGPT, Gemini, Perplexity, and AI Overviews name you, and whether they name you for the right service. | Named in 0 of 3 answers that recommended anyone. |
| Reviews & response | 12 | 54 | The star average is only one input. We also read volume, velocity, the specificity of review language, and response cadence. Specific reviews are what AI quotes verbatim. | Fair |
| Backlink & citation authority | 8 | 52 | Domain authority and editorial quality of the sources that attest to you. | Fair |
| Google Business Profile | 8 | 90 | Required and recommended fields; update cadence. The listing AI pulls from first. | Good |
| Speed & mobile | 7 | 64 | Core Web Vitals at the 75th percentile, on a real phone. | Fair |
| Content freshness & schema | 5 | 57 | Crawl recency, intent alignment, valid JSON-LD, canonicals. | Fair |

Full method: https://localairegistry.com/methodology


## How AI decides what to tell you about a dermatologist

When you ask ChatGPT, Gemini or Google for a med spa, the AI does not visit each business. It reads what is already written about it: the business website, its Google Business Profile, review sites like Yelp and RealSelf, news stories, licensing boards and directories like this one. Then it repeats what those sources agree on.

That is why AI gets small facts wrong. If Yelp says a place is open Mondays and the website says it is not, the AI has to pick one. The table above shows the answers that disagree with the record today.

The more sources agree, and the more specific they are, the more confidently AI recommends a business. A review that says "the nurse did half a syringe in my lips and it looks natural" is far more useful to an AI than one that says "great place."


## How to choose a dermatologist in New York, with or without AI

A few checks take ten minutes and matter more than any rating. This is general information, not medical advice.

- Look up every injector. Doctors are listed by the New York medical board, and nurses and nurse practitioners by its nursing board. Both lookups are free.
- Ask who does the injections, and check that person's license.
- Ask for the price per unit of Botox and per syringe of filler, not per area.
- Read reviews that name a provider and a treatment. Vague praise is easy to fake.
- Check that the hours and phone number match on Google, Yelp and the website. Mismatches are how people end up at a locked door.
- Ask whether they dissolve filler and when they would tell you not to add more.


## How to read the marks on this page

- Confirmed (solid circle): from a known source. The business website, its Google Business Profile, review sites like Yelp, Healthgrades and RealSelf, a licensing board, or measured by Local AI Registry.
- Visitor submitted (hollow circle): added or corrected by a person, with the date and how they know, like a phone call or a visit.
- AI guess (hollow triangle): what AI engines are saying right now. Nobody has confirmed it.


## About the author

Steve Lee is the founder and CEO of Local AI Registry and sets its editorial standards. He is a former Google executive in Search and a former Microsoft executive, with more than 20 years in digital: search, local discovery, and how people find businesses online. He is based in Irvine.

- Expertise: search at Google and Microsoft, AI search, answer engine optimization, generative engine optimization, local SEO, structured data and entity mapping.
- Industry: medical aesthetics, injectables, med spa operations and marketing.
- Disclosure: Local AI Registry sells services to business owners, including Sigma Dermatology: Julie Zang, MD PhD FAAD if it claims this page. That does not change what this page says. Every fact carries its source.


## Entity map

Every person, place, organization and treatment named on this page, with a stable ID and a public reference. The JSON-LD below connects them to each other.

| Entity | Type | ID on this page | Same as | Relationship to Sigma Dermatology: Julie Zang, MD PhD FAAD |
| --- | --- | --- | --- | --- |
| Sigma Dermatology: Julie Zang, MD PhD FAAD | MedicalBusiness | #business | https://sigmadermatology.com/ | Subject of this page |
| Botox | MedicalProcedure | #service-botox | https://en.wikipedia.org/wiki/Botulinum_toxin | Service offered |
| Microneedling | MedicalProcedure | #service-microneedling | https://en.wikipedia.org/wiki/Collagen_induction_therapy | Service offered |
| Flushing, New York | City | #city | Nothing found | City Sigma Dermatology: Julie Zang, MD PhD FAAD is in |
| Local AI Registry | Organization | #publisher | https://localairegistry.com | Publisher of this page |
| Steve Lee | Person | #author | https://localairegistry.com/team | Author of this page |


## Topical map

Where this page sits in the registry. It's one profile among the dermatologists in Flushing, linked to the lists and towns around it.


### Lists

- Best dermatologists in Flushing: https://localairegistry.com/leaderboards/ny/flushing/dermatologist
- Best businesses in Flushing: https://localairegistry.com/leaderboards/ny/flushing


### Nearby

- /new-york: https://localairegistry.com/leaderboards/ny/new-york
- /poughkeepsie: https://localairegistry.com/leaderboards/ny/poughkeepsie
- /middletown: https://localairegistry.com/leaderboards/ny/middletown
- /kingston: https://localairegistry.com/leaderboards/ny/kingston
- /huntington: https://localairegistry.com/leaderboards/ny/huntington
- /rochester: https://localairegistry.com/leaderboards/ny/rochester


### Every list

- Every leaderboard in New York: https://localairegistry.com/leaderboards/ny


## Frequently asked questions


### What is AI search optimization for local business?

Getting a business named when a neighbor asks ChatGPT, Gemini, or Perplexity for a recommendation. Some call it AI SEO, some call it generative engine optimization. Traditional SEO fights for ten blue links; this fights for the one answer an assistant says out loud. The AI Score on this page measures the eight signals that drive it.


### What is Local AI Registry?

The public record of how AI sees local business. We score every business we list by one published method, we keep the questions people ask about it in one place, and we never sell rank. Looking up any business here is free.


### How does this page help a business get recommended by AI?

Assistants read public pages before they answer. This one states what the business does, what people ask about it, and what the Record answers, in one place a machine can read. Correcting what is wrong here changes what an assistant repeats next.


### Who writes the answers here?

Registry AI writes the first answer under every question, from the Record and the public sources named beneath it. Neighbors write the rest under pseudonyms. A registered owner can reply as the business, and their reply says so.


### I own Sigma Dermatology: Julie Zang, MD PhD FAAD. How do I fix something or rank higher?

Register the page. It is free, it takes about five minutes, and it lets you correct the Record and reply as the business. Nothing on this page is for sale, so the only thing that moves the score is the work.


## References


### Sources cited

- [1] Google Business Profile, https://www.google.com/maps/place/?q=place_id:ChIJca-iyalhwokRH1YapzgQL4c (accessed Aug 21, 2026)
- [2] sigmadermatology.com, https://sigmadermatology.com/cosmetic-dermatology/botox/ (accessed Sep 19, 2026)
- [3] sigmadermatology.com, https://sigmadermatology.com/cosmetic-dermatology/chemical-peels/ (accessed Sep 19, 2026)
- [4] sigmadermatology.com, https://sigmadermatology.com/cosmetic-dermatology/ (accessed Sep 19, 2026)
- [5] sigmadermatology.com, https://sigmadermatology.com/cosmetic-dermatology/platelet-rich-plasma-skin-rejuvenation/ (accessed Sep 19, 2026)
- [6] sigmadermatology.com, https://sigmadermatology.com/cosmetic-dermatology/fillers/ (accessed Sep 19, 2026)
- [7] sigmadermatology.com, https://sigmadermatology.com/cosmetic-dermatology/microneedling/ (accessed Sep 19, 2026)
- [8] AI engine output: ChatGPT and Perplexity, read by Local AI Registry on Aug 23, 2026; Gemini, read by Local AI Registry on Aug 21, 2026, https://localairegistry.com/methodology (accessed Sep 19, 2026)