Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Willow and Oak Therapy Group

Q: What is the NPI number for Willow and Oak Therapy Group?

The NPI for Willow and Oak Therapy Group is 1255230363, a Type 2 (organization) record in the CMS NPPES registry.

Marriage & Family Therapist in Rohnert Park, CA · enumerated 2026 · authorized official Shelby Stewart, Therapist.

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

National Provider Identifier

1255230363

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Registry record

Entity type Organization (Type 2)

Legal business name Willow and Oak Therapy Group

Practice address 4431 Hillview Way, Rohnert Park, CA, 94928

Phone (707) 326-8900

Enumeration date Nov 4, 2026

Last updated in NPPES Nov 4, 2026

Taxonomy & classification

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers Primary

Authorized official

Name Shelby Stewart

Title Therapist

Phone (707) 326-8900

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

Who is the authorized official for Willow and Oak Therapy Group?

NPPES lists Shelby Stewart (Therapist) as the authorized official for this organization.

What is the NPI number for Willow and Oak Therapy Group?

The NPI for Willow and Oak Therapy Group is 1255230363, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-11-04.