I am not sure how invested you are against working as a pharmacist, but I would humbly suggest that you at least do that for a while (perhaps 1 to 2 years). Being both an experienced healthcare professional and hacker/developer enables very wide career opportunities. You will be the most tech-savvy pharmacist in the department/company. You will be the most efficient in any kind of data analysis (because your peers are having trouble learning to use Excel Pivot Table while you are writing scripts that take the files as input and perform 1000 Pivot Tables in a second). You will be tasked to be the go-to person for anything remotely related to the million-dollar enterprise software the pharmacy uses. You will get to be involved in the most technologically advanced project the pharmacy is having (think automation, robots, electronic medical records).
In the startup world, the professional status gives you instant, significant positive reputation gap as compared to your usual competent-developer-without-domain-knowledge kind. Not to mention the advantage of having extensive domain knowledge should you manage to find an idea that somehow involves pharmacy.
After that, you can slowly think to get your CS degree (as I am thinking of getting in the near future), or just do the Coursera courses along the way. As you would have some experience working as a pharmacist already, this credential (plus all the experience being involved in pharmacy IT projects) would stay even after you get the CS credentials.
[PS: I'm in Singapore working in a public hospital here.]