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Karlan Jon Arellano, LCSW

Clinical Social Worker in Sterling, IL · enumerated 2021.

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

National Provider Identifier

1891376646

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Registry record

Entity type Individual (Type 1)
Name Karlan Jon Arellano
Credential LCSW
Sex Male
Practice address 2901 E Lincolnway Unit M, Sterling, IL, 61081
Phone (815) 632-6200
Enumeration date Apr 14, 2021
Last updated in NPPES Apr 4, 2024

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 149.026910 (IL) Primary
104100000X Social Worker Behavioral Health & Social Service Providers · License 150.105296 (IL) 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.

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Frequently asked questions

How do I verify Karlan Arellano's NPI record?
Cross-check NPI 1891376646 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1891376646 active?
Yes, as of the latest NPPES snapshot, NPI 1891376646 is active (record last updated 2024-04-04).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-04.