Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary F. Lewis, APRN

Adult Health Nurse Practitioner in Wallingford, CT · enumerated 2006.

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

National Provider Identifier

1558450361

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Registry record

Entity type Individual (Type 1)

Name Mary F. Lewis

Credential APRN

Sex Female

Practice address Gaylord Farms Rd., Wallingford, CT, 06492

Phone (203) 284-2800

Fax (203) 679-3598

Enumeration date Oct 11, 2006

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 001305 (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
029407	Other	CT	SUBSTANCE CONTROLLED LIC.
001305	Other	CT	STATE 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

Is NPI 1558450361 active?

Yes, as of the latest NPPES snapshot, NPI 1558450361 is active (record last updated 2023-03-07).

How do I verify Mary Lewis's NPI record?

Cross-check NPI 1558450361 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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