Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Arleen Yvonne Gershen, LCSW

Social Worker in Denver, CO · enumerated 2006.

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

National Provider Identifier

1205949583

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Registry record

Entity type Individual (Type 1)

Name Arleen Yvonne Gershen

Credential LCSW

Sex Female

Practice address 3201 S Tamarac Dr, Denver, CO, 80231

Phone (303) 597-7777

Fax (303) 597-7700

Enumeration date Aug 17, 2006

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 992079 (CO) 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
9147539	Medicaid	CO	-

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 1205949583 active?

Yes, as of the latest NPPES snapshot, NPI 1205949583 is active (record last updated 2007-07-09).

How do I verify Arleen Gershen's NPI record?

Cross-check NPI 1205949583 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 2007-07-09.