Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine G. Clendening, L.C.S.W., C.A.D.C.

Clinical Social Worker in Wilmington, DE · enumerated 2006 · practices at Connections Community Support Programs, Inc..

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

National Provider Identifier

1225102486

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Registry record

Entity type Individual (Type 1)

Name Katherine G. Clendening

Credential L.C.S.W., C.A.D.C.

Sex Female

Practice address 500 W 10th Street, Wilmington, DE, 19801

Phone (302) 230-9154

Fax (302) 691-1100

Enumeration date Nov 20, 2006

Last updated in NPPES Nov 28, 2018

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License Q10000497 (DE) 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
1000021594	Medicaid	DE	-

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 is the NPI number for Katherine Clendening?

The National Provider Identifier (NPI) for Katherine Clendening is 1225102486, a Type 1 (individual) record in the CMS NPPES registry.

Where does Katherine Clendening practice?

The practice location on file with NPPES is in Wilmington, DE. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Troy Thompson Psychiatry Physician · Wilmington, DE NPI 1043259609 Dyanne Simpson Psychiatry Physician · Wilmington, DE NPI 1033248422 Tiffany Milam Counselor · Wilmington, DE NPI 1497950547 Lamont Baker Addiction (Substance Use Disorder) Counselor · Wilmington, DE NPI 1760791784 Connections Community Support Programs, Inc. Mental Health Clinic/Center (Including Community Mental Health Center) · Wilmington, DE NPI 1104173509 Nicole Phillips Addiction (Substance Use Disorder) Counselor · Wilmington, DE NPI 1265834683

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-11-28.