anything new from MarinHealth Medical lately?
Question · by second_opinion_in_greenbrae · Member since Oct 2026 · 1 post · 2w2 weeks ago
Medical center in Greenbrae, CA
2.4 · 37 reviewsOpen today until 11:59 PMOpen until 11:59
MarinHealth Medical Center Emergency Room, located at 250 Bon Air Rd in Greenbrae, California, has garnered a mixed reputation among its visitors. With a rating of 2.4 from 37 reviews, experiences vary widely, with some patients expressing gratitude for the care they received, while others report long wait times and a lack of compassion from staff. Many reviews highlight concerns about communication and professionalism, suggesting that the environment may not always prioritize patient comfort and understanding. As a local emergency room, it serves a vital role in the community, yet feedback indicates that improvements in patient care and staff interactions are needed.
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Add your name so AI can say who owns the business
Unclaimed · Never replied · Add the year you opened so AI can say how long you've been open
ConfirmedVisitor submittedAI guess
Updated Oct 18, 2026Last activity 19 days ago, a question from second_opinion_in_greenbrae.
16 asked · 0 answered by MarinHealth Medical
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What MarinHealth Medical offers, what it costs, and what people come for.
No code detected[Photo 1]
No code detected[Photo 2]When it's quiet, where to park, and what's nearby.
Hal Brown Park at Creekside is a 3 minute walk for a park.
Nearby places from Google Maps, read Oct 26, 2026.
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.
What reviews, press and directories say about MarinHealth Medical.
2.4from 37 reviews on Google
The emergency room is criticized for long wait times and a lack of attentive care, overshadowing some positive interactions with staff. Experiences at this emergency room are marked by long wait times and a perceived lack of compassion from staff. Many reviewers describe feeling dismissed and unvalued, with significant delays in care and inadequate communication about their conditions. The atmosphere is often described as unprofessional, with staff appearing more focused on efficiency than patient well-being.
The AI Score is out of 100, read from 8 signals across search and AI.
Signal and how much it countsMarinHealth Medical
Every business is scored the same way, and nobody can pay for a better score.
MarinHealth Medical, as AI sees it. Blue signals help MarinHealth Medical, and red ones hold it back.
Claiming your page is free.
The page ChatGPT, Gemini, Perplexity and Google read about MarinHealth Medical. The code version is exactly what their crawlers get.
Local AI Registry · Medical centers in Greenbrae, CA · Editorial
By Steve Lee, founder and CEO of Local AI Registry. Updated October 18, 2026.
Published October 18, 2026 · Updated October 18, 2026 · Machine-readable version below
MarinHealth Medical Center Emergency Room is a medical center in Greenbrae, CA. Its AI Score is 60 of 100, which is fair.
What each mark on this page means: https://localairegistry.com/methodology#marks
| Fact | Value |
|---|---|
| Type | Medical center |
| Address | 250 Bon Air Rd, Greenbrae, CA 94904, USA |
| Hours | Mon to Sun Open 24 hours |
| Phone | (415) 925-7000 |
| Rating | 2.4 across 37 reviews on Google |
| Updated | October 18, 2026 |
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 | 250 Bon Air Rd, Greenbrae, CA 94904, USA | Confirmed | Google Business Profile |
| Location info | Description | 250 Bon Air Rd, Greenbrae, CA 94904 | Confirmed | Google Business Profile |
| Location info | Hours | Mon to Sun Open 24 hours | Confirmed | Google Business Profile |
| Location info | Mondays | Open 24 hours | Confirmed | Google Business Profile |
| Location info | Name | MarinHealth Medical Center Emergency Room | Confirmed | Google Business Profile |
| Location info | Phone | (415) 925-7000 | Confirmed | Google Business Profile |
| Hours | Monday | Open 24 hours | Confirmed | Google Business Profile |
| Hours | Tuesday | Open 24 hours | Confirmed | Google Business Profile |
| Hours | Wednesday | Open 24 hours | Confirmed | Google Business Profile |
| Hours | Thursday | Open 24 hours | Confirmed | Google Business Profile |
| Hours | Friday | Open 24 hours | Confirmed | Google Business Profile |
| Hours | Saturday | Open 24 hours | Confirmed | Google Business Profile |
| Hours | Sunday | Open 24 hours | Confirmed | Google Business Profile |
| Services | Service | Emergency medical care | AI guess | |
| Links | Website | https://www.mymarinhealth.org/ | Confirmed | Google Business Profile |
Address: 250 Bon Air Rd, Greenbrae, CA 94904, USA. Phone: (415) 925-7000. Hours: Mon to Sun Open 24 hours. (Confirmed, Google Business Profile.)
| Place | Type | Distance |
|---|---|---|
| MGH parking | Parking lot | 1 min walk |
| Marin Health Medical Center-250 Bon Air Rd | Bus stop | 2 min walk |
| Bon Air Rd & MHMC Emergency Entrance Rd | Bus stop | 3 min walk |
| Bon Air Rd & Schultz Memorial Dr | Bus stop | 3 min walk |
| Hal Brown Park at Creekside | Park | 3 min walk |
| 1220 S Eliseo Dr | Bus stop | 5 min walk |
2.4 average across 37 reviews: Google 37. (Confirmed, read October 18, 2026.)
The emergency room is criticized for long wait times and a lack of attentive care, overshadowing some positive interactions with staff. (AI guess, from 37 reviews.)
It measures how likely AI engines are to recommend a business, and how accurately. Greenbrae medical centers run 44 to 61. Fair starts at 45, good at 65. MarinHealth Medical scores 60. The same method scores every business on the registry.
| Signal | Weight | Score | What it measures | MarinHealth Medical |
|---|---|---|---|---|
| Retrieval grounding | 26 | 75 | 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. | Good |
| Off-property attestation | 20 | 41 | 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 | Whether ChatGPT, Gemini, Perplexity, and AI Overviews name you, and whether they name you for the right service. | ||
| Reviews & response | 12 | 59 | 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 | 63 | Domain authority and editorial quality of the sources that attest to you. | Fair |
| Google Business Profile | 8 | 79 | Required and recommended fields; update cadence. The listing AI pulls from first. | Good |
| Speed & mobile | 7 | 48 | Core Web Vitals at the 75th percentile, on a real phone. | Fair |
| Content freshness & schema | 5 | 73 | Crawl recency, intent alignment, valid JSON-LD, canonicals. | Good |
Full method: https://localairegistry.com/methodology
How AI decides what to say about a medical center: https://localairegistry.com/methodology#how-ai-decides-med-spa. What to check before you choose one: https://localairegistry.com/methodology#how-to-choose-med-spa
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 MarinHealth Medical |
|---|---|---|---|---|
| MarinHealth Medical Center Emergency Room | MedicalBusiness | #business | https://www.mymarinhealth.org/ | Subject of this page |
| Greenbrae, California | City | #city | City MarinHealth Medical is in | |
| Local AI Registry | Organization | #publisher | https://localairegistry.com | Publisher of this page |
| Steve Lee | Person | #author | https://localairegistry.com/team/steve-lee | Author of this page |
Where this page sits in the registry. It's one profile among the medical centers in Greenbrae, linked to the lists and towns around it.
This is exactly what this page sends to Google, Bing, ChatGPT, Claude, Perplexity and Gemini. We publish it in the open for two reasons: so you can see nothing here is hidden or made up, and so any business or developer can copy it. Being a good local AI steward means the machine version says exactly what the human version says.
Sent before the page. They tell crawlers the canonical address and that a plain markdown copy exists.
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Title, description, canonical, robots and Open Graph tags. This is what shows in search results and link previews.
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One connected graph. Every person and service has its own @id and links to the business, and a licensed person links to the license and the board that issued it.
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# MarinHealth Medical Center Emergency Room, Greenbrae CA: Reviews Source: Local AI Registry, https://localairegistry.com/biz/ca/greenbrae/marinhealth-medical-center-emergency-room-greenbrae-ca. Free to reuse with a link back. By Steve Lee, founder and CEO of Local AI Registry. Updated 2026-10-18. Canonical: https://localairegistry.com/biz/ca/greenbrae/marinhealth-medical-center-emergency-room-greenbrae-ca ## Photos -  -  ## In short MarinHealth Medical Center Emergency Room is a medical center in Greenbrae, CA. Its AI Score is 60 of 100, which is fair. What each mark on this page means: https://localairegistry.com/methodology#marks ## Key facts | Fact | Value | | --- | --- | | Type | Medical center | | Address | 250 Bon Air Rd, Greenbrae, CA 94904, USA | | Hours | Mon to Sun Open 24 hours | | Phone | (415) 925-7000 | | Rating | 2.4 across 37 reviews on Google | | Updated | October 18, 2026 | ## 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 | 250 Bon Air Rd, Greenbrae, CA 94904, USA | Confirmed | Google Business Profile | | Location info | Description | 250 Bon Air Rd, Greenbrae, CA 94904 | Confirmed | Google Business Profile | | Location info | Hours | Mon to Sun Open 24 hours | Confirmed | Google Business Profile | | Location info | Mondays | Open 24 hours | Confirmed | Google Business Profile | | Location info | Name | MarinHealth Medical Center Emergency Room | Confirmed | Google Business Profile | | Location info | Phone | (415) 925-7000 | Confirmed | Google Business Profile | | Hours | Monday | Open 24 hours | Confirmed | Google Business Profile | | Hours | Tuesday | Open 24 hours | Confirmed | Google Business Profile | | Hours | Wednesday | Open 24 hours | Confirmed | Google Business Profile | | Hours | Thursday | Open 24 hours | Confirmed | Google Business Profile | | Hours | Friday | Open 24 hours | Confirmed | Google Business Profile | | Hours | Saturday | Open 24 hours | Confirmed | Google Business Profile | | Hours | Sunday | Open 24 hours | Confirmed | Google Business Profile | | Services | Service | Emergency medical care | AI guess | | | Links | Website | https://www.mymarinhealth.org/ | Confirmed | Google Business Profile | ## Services and prices Add your services so AI can say what you offer ### Known for Share your review link so AI can say what you're known for ## The team Add your team so AI can name who works here ## Visiting MarinHealth Medical Address: 250 Bon Air Rd, Greenbrae, CA 94904, USA. Phone: (415) 925-7000. Hours: Mon to Sun Open 24 hours. (Confirmed, Google Business Profile.) ### Parking and getting in Add your parking so AI can tell people where to park Add how to find your door so AI can walk people in ### Nearby | Place | Type | Distance | | --- | --- | --- | | MGH parking | Parking lot | 1 min walk | | Marin Health Medical Center-250 Bon Air Rd | Bus stop | 2 min walk | | Bon Air Rd & MHMC Emergency Entrance Rd | Bus stop | 3 min walk | | Bon Air Rd & Schultz Memorial Dr | Bus stop | 3 min walk | | Hal Brown Park at Creekside | Park | 3 min walk | | 1220 S Eliseo Dr | Bus stop | 5 min walk | ## Reputation 2.4 average across 37 reviews: Google 37. (Confirmed, read October 18, 2026.) The emergency room is criticized for long wait times and a lack of attentive care, overshadowing some positive interactions with staff. (AI guess, from 37 reviews.) ### What people like - Quick diagnosis for kidney stones - Efficient check-in process - Compassionate care from some nurses ### What people do not like - Long wait times before being seen - Staff perceived as rude or unprofessional - Inadequate communication about care ### Press Add a press story so AI can say who's written about you ### Awards Add an award so AI can name it ### Directories Get listed in directories so AI can tell you're real ## Questions people ask ### anything new from MarinHealth Medical lately? ### stopping by on a Sunday, will they be open ### membership, worth it or not ### regulars here, who do you book with? ### Calling this place, or is there a better way? ### never been to MarinHealth Medical in Greenbrae, how does it go? ### how rough is the follow up at MarinHealth Medical? ### Turning up here for the first time, what happens? ### opening hours at MarinHealth Medical, what are they these days? ### anyone had trouble parking round here? ### On a budget in Greenbrae, is MarinHealth Medical the one? ### booking ahead here, how far do people go? ### booked my first appointment here, how does it go ### which one, MarinHealth Medical or MarinHealth Medical? ### Downsides nobody puts in a five star review? ### worth it or not, what do the regulars say ### MarinHealth Medical, any chance to book in this week? ### best medical center in Greenbrae, CA ### prices round here, anyone got a number ### is there a day here that is not slammed ## The AI Score: 60 of 100 It measures how likely AI engines are to recommend a business, and how accurately. Greenbrae medical centers run 44 to 61. Fair starts at 45, good at 65. MarinHealth Medical scores 60. The same method scores every business on the registry. | Signal | Weight | Score | What it measures | MarinHealth Medical | | --- | --- | --- | --- | --- | | Retrieval grounding | 26 | 75 | 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. | Good | | Off-property attestation | 20 | 41 | 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 | | Whether ChatGPT, Gemini, Perplexity, and AI Overviews name you, and whether they name you for the right service. | | | Reviews & response | 12 | 59 | 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 | 63 | Domain authority and editorial quality of the sources that attest to you. | Fair | | Google Business Profile | 8 | 79 | Required and recommended fields; update cadence. The listing AI pulls from first. | Good | | Speed & mobile | 7 | 48 | Core Web Vitals at the 75th percentile, on a real phone. | Fair | | Content freshness & schema | 5 | 73 | Crawl recency, intent alignment, valid JSON-LD, canonicals. | Good | Full method: https://localairegistry.com/methodology How AI decides what to say about a medical center: https://localairegistry.com/methodology#how-ai-decides-med-spa. What to check before you choose one: https://localairegistry.com/methodology#how-to-choose-med-spa ## 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 MarinHealth Medical | | --- | --- | --- | --- | --- | | MarinHealth Medical Center Emergency Room | MedicalBusiness | #business | https://www.mymarinhealth.org/ | Subject of this page | | Greenbrae, California | City | #city | | City MarinHealth Medical is in | | Local AI Registry | Organization | #publisher | https://localairegistry.com | Publisher of this page | | Steve Lee | Person | #author | https://localairegistry.com/team/steve-lee | Author of this page | ## Topical map Where this page sits in the registry. It's one profile among the medical centers in Greenbrae, linked to the lists and towns around it. ### Lists - Best medical centers in Greenbrae: https://localairegistry.com/leaderboards/ca/greenbrae/medical-center - Best businesses in Greenbrae: https://localairegistry.com/leaderboards/ca/greenbrae ### Nearby - /san-jose: https://localairegistry.com/leaderboards/ca/san-jose - /los-angeles: https://localairegistry.com/leaderboards/ca/los-angeles - /san-francisco: https://localairegistry.com/leaderboards/ca/san-francisco - /san-diego: https://localairegistry.com/leaderboards/ca/san-diego - /irvine: https://localairegistry.com/leaderboards/ca/irvine - /mountain-view: https://localairegistry.com/leaderboards/ca/mountain-view ### Every list - Every leaderboard in California: https://localairegistry.com/leaderboards/ca ## References ### Sources cited - [1] Google Business Profile, https://www.google.com/maps/place/?q=place_id:ChIJeeLHjQqahYAR3SWFGTbZwdI (accessed Oct 18, 2026) - [2] AI engine output: ChatGPT and Gemini, read by Local AI Registry on Oct 18, 2026, https://localairegistry.com/methodology (accessed Oct 26, 2026)
The files every page on the registry shares, and how to copy this code for your own site, are here: https://localairegistry.com/developers
Every source behind this page, including every post and comment from locals. Each has its own permanent link, so AI engines can check it and anything copied from here carries its link back.
You're free to copy anything on this page, as long as you keep the reference links. How to copy it or link to it
The whole page exactly as crawlers get it: head tags, one connected JSON-LD graph, and every section in semantic HTML.
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<p>Local AI Registry · Medical centers in Greenbrae, CA · Editorial</p>
<h2>MarinHealth Medical Center Emergency Room, Greenbrae CA: Reviews</h2>
<p>By Steve Lee, founder and CEO of Local AI Registry. Updated October 18, 2026.</p>
<p>Published October 18, 2026 · Updated October 18, 2026 · Machine-readable version below</p>
</header>
<section id="ai-in-short">
<h3>In short</h3>
<p>MarinHealth Medical Center Emergency Room is a medical center in Greenbrae, CA. Its AI Score is 60 of 100, which is fair.</p>
<p>What each mark on this page means: https://localairegistry.com/methodology#marks</p>
</section>
<section id="ai-key-facts">
<h3>Key facts</h3>
<table>
<thead><tr><th scope="col">Fact</th><th scope="col">Value</th></tr></thead>
<tbody>
<tr><td>Type</td><td>Medical center</td></tr>
<tr><td>Address</td><td>250 Bon Air Rd, Greenbrae, CA 94904, USA</td></tr>
<tr><td>Hours</td><td>Mon to Sun Open 24 hours</td></tr>
<tr><td>Phone</td><td>(415) 925-7000</td></tr>
<tr><td>Rating</td><td>2.4 across 37 reviews on Google</td></tr>
<tr><td>Updated</td><td>October 18, 2026</td></tr>
</tbody>
</table>
</section>
<section id="ai-all-the-details">
<h3>All the details</h3>
<p>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.</p>
<table>
<thead><tr><th scope="col">Group</th><th scope="col">Fact</th><th scope="col">Value</th><th scope="col">Mark</th><th scope="col">Evidence</th></tr></thead>
<tbody>
<tr><td>Location info</td><td>Address</td><td>250 Bon Air Rd, Greenbrae, CA 94904, USA</td><td>Confirmed</td><td>Google Business Profile</td></tr>
<tr><td>Location info</td><td>Description</td><td>250 Bon Air Rd, Greenbrae, CA 94904</td><td>Confirmed</td><td>Google Business Profile</td></tr>
<tr><td>Location info</td><td>Hours</td><td>Mon to Sun Open 24 hours</td><td>Confirmed</td><td>Google Business Profile</td></tr>
<tr><td>Location info</td><td>Mondays</td><td>Open 24 hours</td><td>Confirmed</td><td>Google Business Profile</td></tr>
<tr><td>Location info</td><td>Name</td><td>MarinHealth Medical Center Emergency Room</td><td>Confirmed</td><td>Google Business Profile</td></tr>
<tr><td>Location info</td><td>Phone</td><td>(415) 925-7000</td><td>Confirmed</td><td>Google Business Profile</td></tr>
<tr><td>Hours</td><td>Monday</td><td>Open 24 hours</td><td>Confirmed</td><td>Google Business Profile</td></tr>
<tr><td>Hours</td><td>Tuesday</td><td>Open 24 hours</td><td>Confirmed</td><td>Google Business Profile</td></tr>
<tr><td>Hours</td><td>Wednesday</td><td>Open 24 hours</td><td>Confirmed</td><td>Google Business Profile</td></tr>
<tr><td>Hours</td><td>Thursday</td><td>Open 24 hours</td><td>Confirmed</td><td>Google Business Profile</td></tr>
<tr><td>Hours</td><td>Friday</td><td>Open 24 hours</td><td>Confirmed</td><td>Google Business Profile</td></tr>
<tr><td>Hours</td><td>Saturday</td><td>Open 24 hours</td><td>Confirmed</td><td>Google Business Profile</td></tr>
<tr><td>Hours</td><td>Sunday</td><td>Open 24 hours</td><td>Confirmed</td><td>Google Business Profile</td></tr>
<tr><td>Services</td><td>Service</td><td>Emergency medical care</td><td>AI guess</td><td></td></tr>
<tr><td>Links</td><td>Website</td><td>https://www.mymarinhealth.org/</td><td>Confirmed</td><td>Google Business Profile</td></tr>
</tbody>
</table>
</section>
<section id="ai-services-and-prices">
<h3>Services and prices</h3>
<h4>Known for</h4>
</section>
<section id="ai-the-team">
<h3>The team</h3>
</section>
<section id="ai-visiting-marinhealth-medical">
<h3>Visiting MarinHealth Medical</h3>
<p>Address: 250 Bon Air Rd, Greenbrae, CA 94904, USA. Phone: (415) 925-7000. Hours: Mon to Sun Open 24 hours. (Confirmed, Google Business Profile.)</p>
<h4>Parking and getting in</h4>
<h4>Nearby</h4>
<table>
<thead><tr><th scope="col">Place</th><th scope="col">Type</th><th scope="col">Distance</th></tr></thead>
<tbody>
<tr><td>MGH parking</td><td>Parking lot</td><td>1 min walk</td></tr>
<tr><td>Marin Health Medical Center-250 Bon Air Rd</td><td>Bus stop</td><td>2 min walk</td></tr>
<tr><td>Bon Air Rd & MHMC Emergency Entrance Rd</td><td>Bus stop</td><td>3 min walk</td></tr>
<tr><td>Bon Air Rd & Schultz Memorial Dr</td><td>Bus stop</td><td>3 min walk</td></tr>
<tr><td>Hal Brown Park at Creekside</td><td>Park</td><td>3 min walk</td></tr>
<tr><td>1220 S Eliseo Dr</td><td>Bus stop</td><td>5 min walk</td></tr>
</tbody>
</table>
</section>
<section id="ai-reputation">
<h3>Reputation</h3>
<p>2.4 average across 37 reviews: Google 37. (Confirmed, read October 18, 2026.)</p>
<p>The emergency room is criticized for long wait times and a lack of attentive care, overshadowing some positive interactions with staff. (AI guess, from 37 reviews.)</p>
<h4>What people like</h4>
<ul>
<li>Quick diagnosis for kidney stones</li>
<li>Efficient check-in process</li>
<li>Compassionate care from some nurses</li>
</ul>
<h4>What people do not like</h4>
<ul>
<li>Long wait times before being seen</li>
<li>Staff perceived as rude or unprofessional</li>
<li>Inadequate communication about care</li>
</ul>
<h4>Press</h4>
<h4>Awards</h4>
<h4>Directories</h4>
</section>
<section id="ai-questions-people-ask">
<h3>Questions people ask</h3>
<h4>anything new from MarinHealth Medical lately?</h4>
<h4>stopping by on a Sunday, will they be open</h4>
<h4>membership, worth it or not</h4>
<h4>regulars here, who do you book with?</h4>
<h4>Calling this place, or is there a better way?</h4>
<h4>never been to MarinHealth Medical in Greenbrae, how does it go?</h4>
<h4>how rough is the follow up at MarinHealth Medical?</h4>
<h4>Turning up here for the first time, what happens?</h4>
<h4>opening hours at MarinHealth Medical, what are they these days?</h4>
<h4>anyone had trouble parking round here?</h4>
<h4>On a budget in Greenbrae, is MarinHealth Medical the one?</h4>
<h4>booking ahead here, how far do people go?</h4>
<h4>booked my first appointment here, how does it go</h4>
<h4>which one, MarinHealth Medical or MarinHealth Medical?</h4>
<h4>Downsides nobody puts in a five star review?</h4>
<h4>worth it or not, what do the regulars say</h4>
<h4>MarinHealth Medical, any chance to book in this week?</h4>
<h4>best medical center in Greenbrae, CA</h4>
<h4>prices round here, anyone got a number</h4>
<h4>is there a day here that is not slammed</h4>
</section>
<section id="ai-score">
<h3>The AI Score: 60 of 100</h3>
<p>It measures how likely AI engines are to recommend a business, and how accurately. Greenbrae medical centers run 44 to 61. Fair starts at 45, good at 65. MarinHealth Medical scores 60. The same method scores every business on the registry.</p>
<table>
<thead><tr><th scope="col">Signal</th><th scope="col">Weight</th><th scope="col">Score</th><th scope="col">What it measures</th><th scope="col">MarinHealth Medical</th></tr></thead>
<tbody>
<tr><td>Retrieval grounding</td><td>26</td><td>75</td><td>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.</td><td>Good</td></tr>
<tr><td>Off-property attestation</td><td>20</td><td>41</td><td>Volume and consistency of what others say about you: YouTube mentions, branded web mentions, third-party “best-of” lists. The cause of retrievability.</td><td>Poor</td></tr>
<tr><td>AI visibility</td><td>14</td><td></td><td>Whether ChatGPT, Gemini, Perplexity, and AI Overviews name you, and whether they name you for the right service.</td><td></td></tr>
<tr><td>Reviews & response</td><td>12</td><td>59</td><td>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.</td><td>Fair</td></tr>
<tr><td>Backlink & citation authority</td><td>8</td><td>63</td><td>Domain authority and editorial quality of the sources that attest to you.</td><td>Fair</td></tr>
<tr><td>Google Business Profile</td><td>8</td><td>79</td><td>Required and recommended fields; update cadence. The listing AI pulls from first.</td><td>Good</td></tr>
<tr><td>Speed & mobile</td><td>7</td><td>48</td><td>Core Web Vitals at the 75th percentile, on a real phone.</td><td>Fair</td></tr>
<tr><td>Content freshness & schema</td><td>5</td><td>73</td><td>Crawl recency, intent alignment, valid JSON-LD, canonicals.</td><td>Good</td></tr>
</tbody>
</table>
<p>Full method: https://localairegistry.com/methodology</p>
<p>How AI decides what to say about a medical center: https://localairegistry.com/methodology#how-ai-decides-med-spa. What to check before you choose one: https://localairegistry.com/methodology#how-to-choose-med-spa</p>
</section>
<section id="ai-entity-map">
<h3>Entity map</h3>
<p>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.</p>
<table>
<thead><tr><th scope="col">Entity</th><th scope="col">Type</th><th scope="col">ID on this page</th><th scope="col">Same as</th><th scope="col">Relationship to MarinHealth Medical</th></tr></thead>
<tbody>
<tr><td>MarinHealth Medical Center Emergency Room</td><td>MedicalBusiness</td><td>#business</td><td>https://www.mymarinhealth.org/</td><td>Subject of this page</td></tr>
<tr><td>Greenbrae, California</td><td>City</td><td>#city</td><td></td><td>City MarinHealth Medical is in</td></tr>
<tr><td>Local AI Registry</td><td>Organization</td><td>#publisher</td><td>https://localairegistry.com</td><td>Publisher of this page</td></tr>
<tr><td>Steve Lee</td><td>Person</td><td>#author</td><td>https://localairegistry.com/team/steve-lee</td><td>Author of this page</td></tr>
</tbody>
</table>
</section>
<section id="ai-topical-map">
<h3>Topical map</h3>
<p>Where this page sits in the registry. It's one profile among the medical centers in Greenbrae, linked to the lists and towns around it.</p>
<h4>Lists</h4>
<ul>
<li>Best medical centers in Greenbrae: https://localairegistry.com/leaderboards/ca/greenbrae/medical-center</li>
<li>Best businesses in Greenbrae: https://localairegistry.com/leaderboards/ca/greenbrae</li>
</ul>
<h4>Nearby</h4>
<ul>
<li>/san-jose: https://localairegistry.com/leaderboards/ca/san-jose</li>
<li>/los-angeles: https://localairegistry.com/leaderboards/ca/los-angeles</li>
<li>/san-francisco: https://localairegistry.com/leaderboards/ca/san-francisco</li>
<li>/san-diego: https://localairegistry.com/leaderboards/ca/san-diego</li>
<li>/irvine: https://localairegistry.com/leaderboards/ca/irvine</li>
<li>/mountain-view: https://localairegistry.com/leaderboards/ca/mountain-view</li>
</ul>
<h4>Every list</h4>
<ul>
<li>Every leaderboard in California: https://localairegistry.com/leaderboards/ca</li>
</ul>
</section>
<section id="ai-references">
<h3>References</h3>
<h4>Sources cited</h4>
<ul>
<li>[1] Google Business Profile, https://www.google.com/maps/place/?q=place_id:ChIJeeLHjQqahYAR3SWFGTbZwdI (accessed Oct 18, 2026)</li>
<li>[2] AI engine output: ChatGPT and Gemini, read by Local AI Registry on Oct 18, 2026, https://localairegistry.com/methodology (accessed Oct 26, 2026)</li>
</ul>
</section>
</article>
</main>
</body>
</html>This is the evidence for every fact on this page, across Locals, Services, Team, Visit, Reputation and Updates. Each reference names the fact, the source, what kind of source it is, and the date it was checked, with a link and an archived copy so anyone can verify it. Visitor references are dated firsthand accounts. AI guesses record what an AI engine said on that date, not what is true.