Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Ronni Victoria Riihimaki, MA

Case Manager/Care Coordinator in Lancaster, CA · enumerated 2007 · practices at Tarzana Treatment Centers, Inc..

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

National Provider Identifier

1437274784

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Registry record

Entity type Individual (Type 1)

Name Ms. Ronni Victoria Riihimaki

Credential MA

Sex Female

Practice address 44447 10th St W, Lancaster, CA, 93534

Phone (661) 726-2630

Enumeration date Mar 19, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

171M00000X Case Manager/Care Coordinator Other 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

How do I verify Ronni Riihimaki's NPI record?

Cross-check NPI 1437274784 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1437274784 active?

Yes, as of the latest NPPES snapshot, NPI 1437274784 is active (record last updated 2007-07-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.