Are all PMHNP programs post MSN certificates?

[IMOKAY, BSN]

I have my BSN and want to get my PMHNP MSN.  Im discovering many programs offer a post grad certificate to specialize in mental health.  

Are there PMHNP programs that take me directly from BSN or do I need MSN first? 

[umbdude, MSN, APRN]

You're looking for Traditional MSN (traditionally people get their bachelors first, then masters). You do not need a masters degree to apply for a masters degree.

Post-MSN certs are for people who already hold a masters of nursing degree (some schools will take only those who are already NPs, such as FNPs, and some schools will take MSN graduates in other non-NP areas)