Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marian Ivarsson Marioni, PSYD

Psychologist in Santa Rosa, CA · enumerated 2007.

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

National Provider Identifier

1457498156

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Registry record

Entity type Individual (Type 1)

Name Dr. Marian Ivarsson Marioni

Credential PSYD

Sex Female

Practice address 3440 Airway Dr Ste E, Santa Rosa, CA, 95403

Phone (707) 544-3299

Fax (707) 544-6837

Enumeration date Jan 31, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PSY19599 (CA) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD credential

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 Marian Marioni?

The National Provider Identifier (NPI) for Marian Marioni is 1457498156, a Type 1 (individual) record in the CMS NPPES registry.

Where does Marian Marioni practice?

The practice location on file with NPPES is in Santa Rosa, CA. 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 2007-07-08.