Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Mary Lou Fusi, APRN

Family Nurse Practitioner in New Haven, CT · enumerated 2007.

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

National Provider Identifier

1295855518

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Registry record

Entity type Individual (Type 1)

Name Ms. Mary Lou Fusi

Credential APRN

Sex Female

Practice address 495 Congress Ave, 3rd Floor, New Haven, CT, 06519

Phone (203) 781-4640

Enumeration date Mar 30, 2007

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 002160 (CT) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN credential

Other identifiers

Identifier	Type	State	Issuer
002160	Other	CT	CT LICENSE

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Mary Fusi?

Mary Fusi is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.