It's great that he's now on new meds and apparently compliant. However, I think you are right to be wary of meeting him when he has not apologised or otherwise sought out your company. Which brings me to the question of why you've chased him if you're dubious about meeting him. You don't have to meet him if you're not ready to do so.
If you do decide to go and he's not reaching out to you, I would suggest you use this time to tell him how you're feeling. Tell him how mad, upset, frightened you were. Tell him that you're concerned that he didn't reach out to you or apologise. See if he brushes off your feelings or has an epiphany.
You're not taking the kids I assume?
Never regret anything that has happened in your life. It cannot be changed, forgotten or undone. So, take it as a lesson learned and move on.