Glasa research for American bariatric surgery centers · October 2026
Your patients ask AI which bariatric center to choose. Is your center in the answer?
We asked ChatGPT, Gemini, Perplexity, Copilot and Google AI Mode 10 questions patients ask, from “Top bariatric surgery centers in New York” to “Which bariatric surgery centers in the US are best for gastric bypass?”. They named 84 centers, 46 of them once. The most-named appeared in 22 of 39 answers where a named center was found.
Get the full report ↓- 46 of 50
- AI answers · 10 questions × 5 engines, 1 Oct 2026
- 39 / 46
- answers where a named center was found
- 84
- different centers named in those 39 answers
- 42 / 46
- answers cite at least one source; 130 domains in total
Most-named centers
Answers naming each center out of 39 answers where a named center was found (of 46 collected). Regulators, programs, map credits and review sites removed with exclusion lists; name variants merged.
| Center | ChatGPT | Gemini | Perplexity | Copilot | Google AI Mode |
|---|---|---|---|---|---|
| Cleveland Clinic | 7 | 6 | 4 | 2 | 3 |
| Mayo Clinic | 7 | 5 | 5 | 2 | 2 |
| NYU Langone Health | 4 | 5 | 1 | 1 | 3 |
| Johns Hopkins | 4 | 2 | 0 | 2 | 0 |
| Stanford Health Care | 2 | 5 | 0 | 0 | 0 |
| Duke Health | 2 | 1 | 0 | 0 | 3 |
| Mount Sinai | 1 | 1 | 1 | 1 | 1 |
| Lenox Hill Bariatric Surgery Program | 0 | 1 | 0 | 2 | 2 |
| Cedars-Sinai Medical Center | 0 | 4 | 0 | 0 | 1 |
| NewYork-Presbyterian | 0 | 2 | 1 | 0 | 1 |
What we found
No center owns the category
84 centers across 39 answers where a named center was found, 46 of them named only once. Cleveland Clinic appears in 22 of 39 (56%), Mayo Clinic in 21. The next, NYU Langone Health, in 14.
Accreditation comes up often
29 of 46 answers mention a regulator or accreditation body. MBSAQIP is named in 25 of 46 answers, the American College of Surgeons in 13, ASMBS in 10.
Hospital sites and rankings cited
The most-cited domain is mayoclinic.org (11 answers). Next come money.com, my.clevelandclinic.org and rankings.newsweek.com with 9 each; asmbs.org has 8.
Each engine has its own picks
Stanford Health Care got 5 of its 7 mentions from Gemini; Cedars-Sinai Medical Center 4 of its 5. Cleveland Clinic got 7 from ChatGPT, 2 from Copilot. Visibility in one engine says little about the others.
Where AI gets its answers
Number of the 46 answers that cite each domain. 42 answers cited at least one source; 130 domains in total.
| Source | Answers citing | Type |
|---|---|---|
| mayoclinic.org | 11 / 46 | Firm website |
| money.com | 9 / 46 | Other |
| my.clevelandclinic.org | 9 / 46 | Other |
| rankings.newsweek.com | 9 / 46 | News |
| asmbs.org | 8 / 46 | Other |
| beckershospitalreview.com | 5 / 46 | Review site |
| hopkinsmedicine.org | 5 / 46 | Other |
| us-uk.bookimed.com | 5 / 46 | Comparison / directory |
| en.healthbenefited.com | 4 / 46 | Other |
| nyulangone.org | 4 / 46 | Firm website |
What this means for you
Make accreditation easy to see
29 of 46 answers mention a regulator or accreditation body; MBSAQIP is named in 25. Show your accreditation status where AI and patients can find it.
Be where AI looks
Ranking pages are cited often: money.com and rankings.newsweek.com in 9 answers each. Check whether your center appears on the sites in the table above.
Give AI pages to cite
Hospital sites get cited too: mayoclinic.org in 11 answers, my.clevelandclinic.org in 9. Clear pages on sleeve, bypass and revision surgery give AI something to quote.
Get the full research report
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How we ran the research
10 unbranded questions a real patient would ask: who to choose in the US and in New York, gastric sleeve, gastric bypass and revision surgery, cost, reviews, and a private clinic vs a large hospital.
Each question ran once in the Glasa product through ChatGPT, Gemini, Perplexity, Copilot and Google AI Mode, market set to United States, on 1 October 2026 (08:26–08:45 UTC).
46 of 50 answers were collected. Firm mentions were extracted from the answer texts by Glasa's research script and merged by name; counts are answers mentioning a firm, not occurrences. Regulators, programs, map credits and review sites were removed with exclusion lists.
Sources are the URLs each engine cited in its answer, grouped by domain.
One run on one day. AI answers change between runs, accounts and locations, so treat the counts as a snapshot, not a ranking of center quality. Being named by AI says nothing about a center's licence or results. Check the official register. Mentions were identified by Glasa's research script from the answer texts; small differences in spelling or abbreviation can shift a count by one or two.
All 10 questions
- Who are the best bariatric surgery centers in the US?
- Can you recommend a reputable bariatric surgery center in the US for gastric sleeve surgery?
- A private clinic vs a large hospital in the US: which should I choose for my treatment?
- How much does a bariatric surgery center in the US cost in 2026 and which firms are worth it?
- How do I choose a trustworthy bariatric surgery center in the US? Which ones are well reviewed?
- Top bariatric surgery centers in New York
- What do clients say about bariatric surgery centers in the US? Which have the best reviews?
- Which bariatric surgery centers in the US are best for gastric sleeve surgery?
- Which bariatric surgery centers in the US are best for gastric bypass?
- Which bariatric surgery centers in the US are best for revision bariatric surgery?
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