I have had the great displeasure of interacting with Sayem Hoque (https://www.linkedin.com/in/sayemhoque7/).
He is not someone I would trust. I have found him to be incredibly rude, unprofessional, and patronizing in his demeanor. He is also remarkably unreliable, responding only after weeks of following up.
If he can't be honest and forthcoming during normal conversations, would you want to trust him with your healthcare data?
He is currently running flexbone.ai. I would avoid flexbone at all costs for any healthcare organization that I'm running. I would suggest Substrate (https://www.substrateintelligence.com/) or Luminai (https://www.luminai.com/) over flexbone for anyone looking for clinical workflow automations.