Maria A. Brosnan, APRN, ACNP-BCAPRN, ACNP-BCUnclaimed · claim itNurse Practitioner — Acute CareHelena, MT18+ years experienceRegistered with an NPI since 2008. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.(406) 460-0577NPI 1861653446View Profile Claim