Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Crystal V Marschewski

Counselor in Siloam Springs, AR · enumerated 2019.

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

National Provider Identifier

1205493921

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Registry record

Entity type Individual (Type 1)

Name Crystal V Marschewski

Sex Female

Practice address 827 W Harvard St, Siloam Springs, AR, 72761

Phone (479) 549-3121

Fax (479) 750-4843

Enumeration date May 29, 2019

Last updated in NPPES Feb 7, 2023

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License A2110007 (AR) 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 Crystal Marschewski practice?

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

What is the NPI number for Crystal Marschewski?

The National Provider Identifier (NPI) for Crystal Marschewski is 1205493921, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-02-07.