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Mrs. Allison Rose Mastroianni, PA

Physician Assistant in Trumbull, CT · enumerated 2024 · practices at The Diep Group Ct Pllc.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1023858123

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Registry record

Entity type Individual (Type 1)
Name Mrs. Allison Rose Mastroianni
Credential PA
Sex Female
Practice address 5520 Park Ave Ste Wp-2300, Trumbull, CT, 06611
Phone (203) 374-0310
Fax (203) 374-0314
Enumeration date May 28, 2024
Last updated in NPPES Aug 9, 2024

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 23.006711 (CT) Primary
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA 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.

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Frequently asked questions

Where does Allison Mastroianni practice?
The practice location on file with NPPES is in Trumbull, CT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Allison Mastroianni?
The National Provider Identifier (NPI) for Allison Mastroianni is 1023858123, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-09.