Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Mary Rita Fennell, LCSW

Clinical Social Worker in Lewes, DE · enumerated 2007.

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

National Provider Identifier

1083817118

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Registry record

Entity type Individual (Type 1)

Name Ms. Mary Rita Fennell

Credential LCSW

Sex Female

Practice address Lewes, DE, 19958

Phone (845) 532-5947

Enumeration date Jun 6, 2007

Last updated in NPPES Oct 16, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 077917 (NY) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
Q1-0001404	Other	DE	LCSW

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

How do I verify Mary Fennell's NPI record?

Cross-check NPI 1083817118 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1083817118 active?

Yes, as of the latest NPPES snapshot, NPI 1083817118 is active (record last updated 2015-10-16).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-10-16.