It is clinic-adjacent or non-clinical, at the discretion of the admissions committee faculty. It's like the vaccine clinics from the pandemic days. You could also offer cholesterol or blood glucose screening at similar health fairs.
However, similar community free clinics also give health screenings. I don't have a problem you classifying it as "non-clinical". Just mind the "service orientation" activities like food distribution, shelter volunteer, job/tax preparation, legal support, transportation services, or housing rehabilitation; you need 150 hours when submitting your application.