Yu-Xuan (John) Dang, M.D.

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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.

# Yu-Xuan (John) Dang, M.D., Mountain View: an internist in Mountain View (2026 guide)

Source: Local AI Registry, https://localairegistry.com/biz/ca/mountain-view/yu-xuan-john-dang-m-d-mountain-view-ca. Free to reuse with a link back.

By Steve Lee, founder and CEO of Local AI Registry. Fact-checked against 10 sources. Updated 2026-08-17. Owner review: not yet.

Canonical: https://localairegistry.com/biz/ca/mountain-view/yu-xuan-john-dang-m-d-mountain-view-ca

## Photos

- ![Photo 1](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmswn0u8400eeye99ch3s7a06%2F0.jpg)
- ![Photo 2](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmswn0u8400eeye99ch3s7a06%2F1.jpg)
- ![Photo 3](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmswn0u8400eeye99ch3s7a06%2F2.jpg)
- ![Photo 4](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmswn0u8400eeye99ch3s7a06%2F3.jpg)
- ![Photo 5](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmswn0u8400eeye99ch3s7a06%2F4.jpg)


## In short

Yu-Xuan (John) Dang, M.D. is an internist in Mountain View, CA. Its AI Score is 37 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 Gemini and ChatGPT are saying, not confirmed by anyone). Every mark points to a reference at the end of this page.


## Key facts

| Fact | Value |
| --- | --- |
| Type | Internist |
| Address | 2495 Hospital Dr Ste 650, Mountain View, CA 94040, USA |
| Hours | Mon to Fri 9 AM to 5 PM · Closed Sat to Sun |
| Phone | (650) 988-8460 |
| Owner | Nothing found |
| Rating | 4.6 across 69 reviews on Google |
| Known for | Nothing found |
| Prices | Nothing found |
| Quietest time | Nothing found |
| Parking | Nothing found |
| Last verified | September 18, 2026, 9:30 PM |


## 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 | 2495 Hospital Dr Ste 650, Mountain View, CA 94040, USA | Confirmed | Google Business Profile, checked Aug 16, 2026 |
| Location info | Description | Dr. John (Yu-Xuan) Dang is a private practice Primary Care/Internal Medicine doctor in Mountain View. He speaks fluent English and Chinese Mandarin. Dr. Dang offers a variety of services, including annual physical exams and vaccinations, and treats a variet of medical conditions. | Confirmed | Google Business Profile, checked Aug 16, 2026 |
| Location info | Hours | Mon to Fri 9:00 AM to 5:00 PM · Sat to Sun Closed | Confirmed | Google Business Profile, checked Aug 16, 2026 |
| Location info | Name | Yu-Xuan (John) Dang, M.D. | Confirmed | Google Business Profile, checked Aug 16, 2026 |
| Location info | Phone | (650) 988-8460 | Confirmed | Google Business Profile, checked Aug 16, 2026 |
| Hours | Monday | 9:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 16, 2026 |
| Hours | Tuesday | 9:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 16, 2026 |
| Hours | Wednesday | 9:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 16, 2026 |
| Hours | Thursday | 9:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 16, 2026 |
| Hours | Friday | 9:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 16, 2026 |
| Hours | Saturday | Closed | Confirmed | Google Business Profile, checked Aug 16, 2026 |
| Hours | Sunday | Closed | Confirmed | Google Business Profile, checked Aug 16, 2026 |
| Services | Service | Annual physical exams | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Blog cn | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Blog en | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Book appointment | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Book appointment 2 en | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Book new patient cn | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Book returning patient cn | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Book returning patient en | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Cardiovascular | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Endocrine | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Gastro intestinal | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Gastrointestinal treatment | AI guess | Nothing found |
| Services | Service | Infections | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Kidney disease | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Liquid nitrogen cryotherapy | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Liver disease | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Lungs | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Musculoskeletal | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Other | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Psychiatric | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Skin | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Vaccinations | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Virtual video visits | Confirmed | Business website, checked Sep 18, 2026 |
| Links | Website | https://www.johndangmd.com/ | Confirmed | Google Business Profile, checked Aug 16, 2026 |


## Services and prices

These are the 22 services Yu-Xuan Dang, M.D offers, with the price where we have one and where it came from.

| Service | Price | Price mark | Price evidence | Service mark |
| --- | --- | --- | --- | --- |
| Blog en |  |  |  | Confirmed |
| Book appointment |  |  |  | Confirmed |
| Liquid nitrogen cryotherapy |  |  |  | Confirmed |
| Book new patient cn |  |  |  | Confirmed |
| Book returning patient en |  |  |  | Confirmed |
| Virtual video visits |  |  |  | Confirmed |
| Blog cn |  |  |  | Confirmed |
| Book appointment 2 en |  |  |  | Confirmed |
| Skin |  |  |  | Confirmed |
| Vaccinations |  |  |  | Confirmed |
| Annual physical exams |  |  |  | Confirmed |
| Endocrine |  |  |  | Confirmed |
| Gastro intestinal |  |  |  | Confirmed |
| Kidney disease |  |  |  | Confirmed |
| Liver disease |  |  |  | Confirmed |
| Lungs |  |  |  | Confirmed |
| Musculoskeletal |  |  |  | Confirmed |
| Other |  |  |  | Confirmed |
| Psychiatric |  |  |  | Confirmed |
| Cardiovascular |  |  |  | Confirmed |
| Book returning patient cn |  |  |  | Confirmed |
| Infections |  |  |  | Confirmed |


### Known for

Reviews not read yet, back on Scan Day.


## The team

Nothing found


## Visiting Yu-Xuan Dang, M.D

Address: 2495 Hospital Dr Ste 650, Mountain View, CA 94040, USA. Phone: (650) 988-8460. Hours: Mon to Fri 9 AM to 5 PM · Closed Sat to Sun. (Confirmed, Google Business Profile, checked August 16, 2026 at 7:51 PM.)


### Location info from Google Business Profile

Business description, written by Yu-Xuan Dang, M.D on its Google Business Profile: "Dr. John (Yu-Xuan) Dang is a private practice Primary Care/Internal Medicine doctor in Mountain View. He speaks fluent English and Chinese Mandarin.

Dr. Dang offers a variety of services, including annual physical exams and vaccinations, and treats a variet of medical conditions."


### When to go

Busy times not read yet, back on Scan Day.


### Parking and getting in

Nothing found


### Nearby

| Place | Type | Distance |
| --- | --- | --- |
| El Camino Hospital Seminar | Restaurant | 3 min walk |
| El Camino Hospital | Bus stop | 3 min walk |
| North Garage | Parking lot | 3 min walk |
| El Camino Hospital | Transit station | 4 min walk |
| YMCA Mountain View | Non-profit organization | 4 min walk |
| Java Junction - Starbucks Coffee | Cafe | 4 min walk |


## Reputation

4.6 average across 69 reviews: Google 25. (Confirmed, read August 16, 2026.)

Dr. Dang is recognized for his attentive care and preventive health focus, though some patients report issues with appointment management. (AI guess, from 69 reviews.)


### What people like

- Proactive follow-up care
- Clear explanations of health issues
- Timely prescription refills
- Strong focus on preventive health


### What people do not like

- Long waits past the appointment time
- Unresponsive front desk staff
- Rushed appointments


### Press

No press story about Yu-Xuan Dang, M.D found yet.


### Awards

None named yet.


### Directories

Directory listings not read yet.


## Recent updates from Yu-Xuan Dang, M.D

Yu-Xuan Dang, M.D hasn't posted an update here yet.


## Questions people ask


### anything I should sort out before a first visit here?

No answer yet


### reviews all look glowing, what are the real complaints?

No answer yet


### Worth the hype here?

No answer yet


### opening hours at Yu-Xuan Dang, M.D in Mountain View, what are they these days?

No answer yet


### genuinely, what is good about this one

No answer yet


### Yu-Xuan Dang, M.D, any chance to get in this week?

No answer yet


### Whereabouts is Yu-Xuan Dang, M.D?

No answer yet


### picking between the two, is Kwan Pun, M.D the safer bet?

No answer yet


### what else is on Hospital around Yu-Xuan Dang, M.D?

No answer yet


### cheaper than Yu-Xuan Dang, M.D in Mountain View without it being sketchy?

No answer yet


### best internist in Mountain View

No answer yet


### last update from here was when?

No answer yet


### Ballpark for a visit to an internist in Mountain View?

No answer yet


### parking at Yu-Xuan Dang, M.D, where does everyone put the car?

No answer yet


### Booking here, how does it work?

No answer yet


### anyone been on a Saturday, were they trading

No answer yet


### is there a rewards thing at Yu-Xuan Dang, M.D

No answer yet


## What AI gets wrong about Yu-Xuan Dang, M.D

We ask Gemini and ChatGPT about Yu-Xuan Dang, M.D. These are the answers that disagree with the record.

ChatGPT and Gemini, read by Local AI Registry on Oct 21, 2026.

No capture has disagreed with the record yet.


## The AI Score: 37 of 100

The AI Score measures how likely AI engines are to recommend a business, and how accurately. Mountain View internists run 30 to 49. Fair starts at 45, good at 65. Yu-Xuan Dang, M.D scores 37, below the Mountain View average of 39. The same method scores every business on the registry.

| Signal | Weight | Score | What it measures | Yu-Xuan Dang, M.D |
| --- | --- | --- | --- | --- |
| Retrieval grounding | 26 | 35 | 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 | 37 | 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 15 answers that recommended anyone. 7 more named nobody, which is not a loss and is not scored. |
| Reviews & response | 12 | 72 | 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. | Good |
| 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 | 61 | 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 an internist

When you ask ChatGPT, Gemini or Google about a local business, the AI doesn't visit it. It reads what's already written about it: the business's website, its Google Business Profile, review sites, news stories and directories like this one. Then it repeats what those sources agree on.

That's why AI gets small facts wrong. If Yelp says a place is open Mondays and the website says it isn't, 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 names who helped and what they did tells an AI far more than one that says "great place."


## How to choose an internist in California, with or without AI

A few checks take ten minutes and tell you more than any rating.

- Check that the hours and phone number match on Google, Yelp and the business's own website. Mismatches are how people end up at a locked door.
- Read reviews that name a person and what they did. Vague praise is easy to fake.
- Look for recent reviews and recent posts. A page nobody has touched in a year may not match the business today.
- Ask for the price before you go, and ask what it includes.
- Where the work needs a license, ask whose license it is and look it up with California.


## 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 Yu-Xuan Dang, M.D 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 Yu-Xuan Dang, M.D |
| --- | --- | --- | --- | --- |
| Yu-Xuan (John) Dang, M.D. | LocalBusiness | #business | https://www.johndangmd.com/ | Subject of this page |
| Mountain View, California | City | #city | Nothing found | City Yu-Xuan Dang, M.D 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 internists in Mountain View, linked to the lists and towns around it.


### Lists

- Best internists in Mountain View: https://localairegistry.com/leaderboards/ca/mountain-view/internist
- Best businesses in Mountain View: https://localairegistry.com/leaderboards/ca/mountain-view


### Nearby

- /los-angeles: https://localairegistry.com/leaderboards/ca/los-angeles
- /san-francisco: https://localairegistry.com/leaderboards/ca/san-francisco
- /san-jose: https://localairegistry.com/leaderboards/ca/san-jose
- /san-diego: https://localairegistry.com/leaderboards/ca/san-diego
- /irvine: https://localairegistry.com/leaderboards/ca/irvine
- /fresno: https://localairegistry.com/leaderboards/ca/fresno


### Every list

- Every leaderboard in California: https://localairegistry.com/leaderboards/ca


## 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 Yu-Xuan (John) Dang, M.D.. 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:ChIJm-m4N2S3j4ARTbJwCHVM67w (accessed Aug 16, 2026)
- [2] johndangmd.com, https://www.johndangmd.com/ (accessed Sep 18, 2026)
- [3] johndangmd.com, https://www.johndangmd.com/zh/blog-cn (accessed Sep 18, 2026)
- [4] johndangmd.com, https://www.johndangmd.com/en/blog-en (accessed Sep 18, 2026)
- [5] johndangmd.com, https://www.johndangmd.com/en/book-appointment (accessed Sep 18, 2026)
- [6] johndangmd.com, https://www.johndangmd.com/en/book-appointment-2-en (accessed Sep 18, 2026)
- [7] johndangmd.com, https://www.johndangmd.com/zh/book-new-patient-cn (accessed Sep 18, 2026)
- [8] johndangmd.com, https://www.johndangmd.com/zh/book-returning-patient-cn (accessed Sep 18, 2026)
- [9] johndangmd.com, https://www.johndangmd.com/en/book-returning-patient-en (accessed Sep 18, 2026)
- [10] AI engine output: ChatGPT and Gemini, read by Local AI Registry on Oct 21, 2026, https://localairegistry.com/methodology (accessed Sep 18, 2026)