David T. Diwa, PHARM.D.PHARM.D.Unclaimed · claim itPharmacist — PharmacotherapyColumbia, MD19+ years experienceRegistered with an NPI since 2007. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.(107) 360-9904NPI 1679791925View Profile Claim