Visibility index · United States
Hospitals
68 AI answers to 15 prompts name 64 brands. Mayo Clinic leads with 8.4% of mentions; the top 3 hold 22.3%.
Level 3n = 68 answers15 promptsupdated Oct 8, 2026AI Mode18ChatGPT17AI Overviews15Gemini18
AI answers
68
15 prompts
Last run Oct 8, 2026
Brands seen
64
Top 3 hold 22.3%
n = 68 answers
Concentration
Fragmented
HHI 347 · leader 8.4%
Leader
Mayo Clinic
8.4% of mentions
Avg. position #4.2
Top engine
AI Mode
26.5% of answers
4 engines sampled
Sources cited
216
Top: health.usnews.com 17.1%
n = 68 answers
What AI answers show
Brands and sources in the sampled answers
n = 68 answers15 promptsOct 8, 2026
Brands AI recommends
Share of brand mentions in Hospitals answers
- 1Mayo Clinicavg. #4.28.4%42
- 2Cleveland Clinicavg. #5.07.2%36
- 3Johns Hopkins Hospitalavg. #5.06.6%33
- 4NewYork-Presbyterian Hospitalavg. #6.84.8%24
- 5NYU Langone Hospitalsavg. #6.54.6%23
n = 68 answers64 brands seen in total
Market concentrationFragmented
FragmentedModerateConcentrated
HHI 347Leader 8.4%Top 3 22.3%
Fragmented: no brand dominates. The top 3 hold 22.3% of mentions; the leader 8.4%.
Answers behind the ranking
Every engine sampled
- Google AI Mode18
- ChatGPT17
- AI Overviews15
- Gemini18