Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Four Oaks Family and Children'S Services

Psychiatric Residential Treatment Facility in Mason City, IA · enumerated 2019 · authorized official Mary Beth O'Neill, President/Ceo.

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

National Provider Identifier

1992262760

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Registry record

Entity type Organization (Type 2)

Legal business name Four Oaks Family and Children'S Services

Practice address 80 North Eisenhower Ave, Mason City, IA, 50401

Phone (319) 364-0259

Fax (866) 290-5565

Enumeration date Feb 27, 2019

Last updated in NPPES Feb 12, 2026

Taxonomy & classification

323P00000X Psychiatric Residential Treatment Facility Residential Treatment Facilities Primary

Authorized official

Name Mary Beth O'Neill

Title President/Ceo

Phone (319) 364-0259

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 a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Four Oaks Family and Children'S Services?

Four Oaks Family and Children'S Services is registered in NPPES as a Psychiatric Residential Treatment Facility (its primary provider taxonomy).

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Four Oaks Family and Children'S Services Psychiatric Residential Treatment Facility · Mason City, IA NPI 1851858617

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-12.