Reddit - Try different subreddits. Check posting rules. Slack/Discord groups - Look for communities in healthcare technology or startup study group. Facebook

Reddit - Try different subreddits. Check posting rules. Slack/Discord groups - Look for communities in healthcare technology or startup study group. Facebook groups Survey/Interview sites - https://www.userinterviews.com/ https://www.userinterviews.com/, https://www.respondent.io/ https://www.respondent.io/ etc. Offer gift cards or early access as a thank-you.