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Mari C Castellanos

Mental Health Counselor in Oklahoma City, OK · enumerated 2026.

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

National Provider Identifier

1407778384

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Registry record

Entity type Individual (Type 1)
Name Mari C Castellanos
Sex Female
Practice address 6801 S Western Ave Ste 105, Oklahoma City, OK, 73139
Phone (405) 338-7674
Enumeration date Jul 29, 2026
Last updated in NPPES Jul 29, 2026

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers 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.

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Frequently asked questions

What is the NPI number for Mari Castellanos?
The National Provider Identifier (NPI) for Mari Castellanos is 1407778384, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mari Castellanos practice?
The practice location on file with NPPES is in Oklahoma City, OK. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-29.