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

Sonja Su Pennington, LCSW

Mental Health Counselor in Arlington, TX · enumerated 2007.

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

National Provider Identifier

1609926559

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Registry record

Entity type Individual (Type 1)

Name Sonja Su Pennington

Credential LCSW

Sex Female

Practice address Arlington, TX, 76013

Phone (817) 654-3900

Fax (817) 654-3900

Enumeration date Jan 11, 2007

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 17207 (TX) Primary

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

Is NPI 1609926559 active?

Yes, as of the latest NPPES snapshot, NPI 1609926559 is active (record last updated 2007-07-08).

How do I verify Sonja Pennington's NPI record?

Cross-check NPI 1609926559 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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