Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mellow Psychological Services, Inc.

Q: What is the NPI number for Mellow Psychological Services, Inc.?

The NPI for Mellow Psychological Services, Inc. is 1457608804, a Type 2 (organization) record in the CMS NPPES registry.

Clinical Psychologist in Hermosa Beach, CA · enumerated 2012 · authorized official Colleen Long, Owner.

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

National Provider Identifier

1457608804

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Registry record

Entity type Organization (Type 2)

Legal business name Mellow Psychological Services, Inc.

Practice address 200 Pier Ave, Suite 424, Hermosa Beach, CA, 90254

Phone (800) 593-2560

Fax (800) 593-2560

Enumeration date Aug 4, 2012

Last updated in NPPES Aug 4, 2012

Taxonomy & classification

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY23911 (CA) Primary

Authorized official

Name Colleen Long

Title Owner

Phone (800) 593-2560

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

What is the NPI number for Mellow Psychological Services, Inc.?

The NPI for Mellow Psychological Services, Inc. is 1457608804, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Mellow Psychological Services, Inc.?

NPPES lists Colleen Long (Owner) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-08-04.