Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Marcia Elaine Schweitzer, LCSW/LICSW

Social Worker in Middletown, DE · enumerated 2009.

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

National Provider Identifier

1891926630

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Registry record

Entity type Individual (Type 1)

Name Mrs. Marcia Elaine Schweitzer

Credential LCSW/LICSW

Sex Female

Practice address 401 N Broad St, Middletown, DE, 19709

Phone (302) 376-0621

Fax (302) 376-0629

Enumeration date Jul 28, 2009

Last updated in NPPES Jul 28, 2009

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License Q1-0000802 (DE) Primary

104100000X Social Worker Behavioral Health & Social Service Providers · License LC50078082 (DC) Secondary

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

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Marcia Schweitzer?

The National Provider Identifier (NPI) for Marcia Schweitzer is 1891926630, a Type 1 (individual) record in the CMS NPPES registry.

Where does Marcia Schweitzer practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-28.