Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Dorrian Marnelle Maddox, LCSWC

Social Worker in Timonium, MD · enumerated 2007.

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

National Provider Identifier

1871644633

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Registry record

Entity type Individual (Type 1)

Name Ms. Dorrian Marnelle Maddox

Credential LCSWC

Sex Female

Practice address 2429 Chetwood Circle, Ste 2, Timonium, MD, 21093

Phone (410) 744-3322

Fax (410) 744-3326

Enumeration date Jan 16, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 12699 (MD) Primary

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

Where does Dorrian Maddox practice?

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

What is the NPI number for Dorrian Maddox?

The National Provider Identifier (NPI) for Dorrian Maddox is 1871644633, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.