Dr. Robert Phong Ho DDS
zentist.io couldn't be reached by the scanner (challenge:access denied). Some hosts refuse requests from Cloudflare's network. The finding below says what the scanner saw, and rescans are free.
Listed by Overture Maps.
Ways to reach Dr. Robert Phong Ho DDS directly, with no marketplace in between. Checked 2026-10-24. Through calendly acting for the business. Report a mistake
307 12th Ave, 94118, San Francisco · (415) 386-0666
Places near Dr. Robert Phong Ho DDS that take a booking or an order on their own website, with no marketplace in between.
- Lily Voong - Dds310 m
- Hearing and Low Vision Solutions370 m
- Kauno460 m
- Richmond Dental Care480 m
The website's grade
AI assistants can't open Dr. Robert Phong Ho DDS's website, so they go by what other sites say about it.
0 of 80 points available
agent-readiness level
thing to fix
Provisional, with the assistant citation check still to come. The hatched part of the bar isn't measured yet.
What assistants answer
Each assistant gets three questions about this business: the official website, where to book and where to order. Each cell shows where the answer sent people.
The assistants haven't been asked about this business yet. They're asked about the top-ranked businesses in each city index, and about any business as soon as it's claimed. Claim this page to be included.
The assistants were asked 12 everyday questions about San Francisco dentists, clinics and vets and named 53 places. Dr. Robert Phong Ho DDS wasn't one of them. See who was named →
How Dr. Robert Phong Ho DDS compares
869 of 927 in San Francisco dentists, clinics and vets
Top 94% of the sites scanned in this index. Just above: Dr. George D. Karsant Jr F, Dr. Giulietta Octavio, DACM F. Just below: Dr. Sally A. Eng, Dds F, Dr. Sudabeh Z. Moavenian, Dds, Ms, Diplomat Of American Board Of Periodontology F.
| What the top 10% of the index does | Top 10% | This site |
|---|---|---|
| Take bookings or orders on their own domain | 97% | yes |
| Publish the menu or price list as HTML | 5% | no |
| Let AI crawlers in (no block at the server or in robots.txt) | 99% | no |
| Structured data with address, phone and hours | 26% | no |
| Have an llms.txt | 20% | yes |
The top 10% are the 97 highest-scoring reachable sites in the index at the last update.
Compared with its peers
| Average score | A or B | This site | |
|---|---|---|---|
| Sites using Calendly 1,150 sites | 62% | 32% | 0% |
Nearest places in the index
| Place | Distance | Grade | Direct booking or ordering |
|---|---|---|---|
| Turtle Rabbit Physical Therapy and Integrative Performance | 54 m | D | no |
| Wayne M Wong Dds | 66 m | F | no |
| Island Dental | 293 m | F | no |
| Lily Voong - Dds | 312 m | B | yes |
| Clement Street Dental | 325 m | D | no |
| Hearing and Low Vision Solutions | 370 m | B | yes |
| San Francisco Foot & Ankle Group | 434 m | F | no |
| Kauno | 461 m | B | yes |
| Raymond H Katz DDS | 472 m | C | no |
| Richmond Dental Care | 482 m | C | yes |
Businesses like Dr. Robert Phong Ho DDS in San Francisco dentists, clinics and vets
| Group | Sites | Avg score | A or B | This site |
|---|---|---|---|---|
| Businesses of the same kind in San Francisco dentists, clinics and vets | 927 | 49% | 17% | 0% |
| Sites using Calendly in San Francisco dentists, clinics and vets | 7 | 58% | 0% | 0% |
The best of the sites using Calendly in San Francisco dentists, clinics and vets
Avid Sports Medicine C 67.7% · Dayone Baby C 67.7% · SF Pediatric Dentistry C 58% · Lisa Capaldini, Md C 55.4% · SignatureMD C 55.4%
Peers are the businesses in the same index that have a reachable site, using the latest scan of each. The rank comes from the index's current ranking.
What to fix first
- The site couldn't be read at all
There's a bot challenge in front of the site (challenge:access denied), so a plain fetch never gets to the page. A real browser tried too and got http_404.
Send the fixes to your web person
No one is listed yet to fix this in San Francisco dentists, clinics and vets. List your agency or yourself. It's free, and every listing is reviewed by hand.
Builder: unknown · A plain fetch got challenge:access denied; a real browser got http_404 too.
Own this business?
If you fixed something or think a check is wrong, rescan. Rescans are free. Claiming takes one email to confirm. After that, the three assistants are asked about the business right away and the site is rescanned every week. You get a message only when the score changes.
Keep watching this business: the assistants are asked again every month, and you see what changed. 2 EUR a month or 19 EUR a year. Deep report: ten questions to each assistant, plus the places nearby. 5 EUR, paid once. Reading and scanning stay free. These few euros pay for the questions sent to the assistants and for the servers.
Show the score
Owners who score well put the badge on their site. It links back here and updates with every scan.
<a href="https://directindex.org/r/zentist.io"><img src="https://directindex.org/badge/zentist.io.svg" alt="Agent-Direct Score F" width="236" height="40"></a>
What agents get, and what the site publishes
The direct record agents get for this business, the rails an agent could transact through, and the agent standards the site publishes.
Show the details
What agents get for Dr. Robert Phong Ho DDS
The links an assistant is sent when it books, orders or reads the menu for this business, where each leads, and when a browser last checked it. The same record is served as JSON at /api/direct/zentist.io, through the MCP tool direct_record and in the city feed /city/san-francisco-clinics/direct.json.
| Path | Link | Status |
|---|---|---|
| Book | assets.calendly.com/assets/external/widget.js vendor on own site: Calendly | found by the scan of 2026-10-24, not yet tested |
| Order | none on record | |
| Menu | none on record | |
| Hours | none on record | |
| Phone | (415) 386-0666 |
Stable links that count: /go/zentist.io/book answer 302 to the links above; the count is the line "followed N direct links" on this page.
Owners: claim the business below to correct this record; the claim email carries the link.
Not measured
These are the standards an agent looks for before it reads a page, checked the same way as Cloudflare's Agent Readiness scan. They don't count toward the score. Each missing item links to a how-to. Cloudflare's report.
| JSON-LD for the business | no |