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Dr. Rick Merwin, PHD

Psychologist in Redding, CA · enumerated 2007 · practices at Redding Rancheria.

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

National Provider Identifier

1891837688

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Registry record

Entity type Individual (Type 1)
Name Dr. Rick Merwin
Credential PHD
Sex Male
Practice address 3184 Churn Creek Rd, Redding, CA, 96002
Phone (530) 224-2700
Enumeration date Feb 12, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PSY5419 (CA) Primary
PHD — Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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.

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Frequently asked questions

How do I verify Rick Merwin's NPI record?
Cross-check NPI 1891837688 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1891837688 active?
Yes — as of the latest NPPES snapshot, NPI 1891837688 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.