Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Kelly Mastroianni, RN
Nurse Practitioner in Franklin, MA · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1437883204
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Registry record
Entity type Individual (Type 1)
Name Kelly Mastroianni
Credential RN
Sex Female
Practice address 1280 W Central St Ste 101, Franklin, MA, 02038
Phone (774) 462-3900
Enumeration date Jul 15, 2022
Last updated in NPPES Sep 3, 2025
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN269697 (MA) Primary
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam.
About the RN credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for Kelly Mastroianni?
The National Provider Identifier (NPI) for Kelly Mastroianni is 1437883204, a Type 1 (individual) record in the CMS NPPES registry.
Where does Kelly Mastroianni practice?
The practice location on file with NPPES is in Franklin, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-03.