Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Arthur Sergio Santos, RN

Adult Psychiatric/Mental Health Registered Nurse in Eureka, CA · enumerated 2008.

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

National Provider Identifier

1730332651

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Registry record

Entity type Individual (Type 1)

Name Arthur Sergio Santos

Credential RN

Sex Male

Practice address Eureka, CA, 95501

Phone (707) 268-2990

Enumeration date Oct 23, 2008

Last updated in NPPES Apr 11, 2018

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

163WP0809X Adult Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License 506808 (CA) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

Where does Arthur Santos practice?

The practice location on file with NPPES is in Eureka, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Arthur Santos?

The National Provider Identifier (NPI) for Arthur Santos is 1730332651, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Panna Shah Psychiatry Physician · Eureka, CA NPI 1780659763 Janese Charpentier Psychiatric/Mental Health Nurse Practitioner · Eureka, CA NPI 1780646521 County of Humboldt Psychiatric Hospital Unit · Eureka, CA NPI 1194763219 Marian Vasilevich Marriage & Family Therapist · Eureka, CA NPI 1407873268 Steve Roth Clinical Psychologist · Eureka, CA NPI 1417971946 Evelyn Doyle Family Nurse Practitioner · Eureka, CA NPI 1710070966 Mark Sussman Clinical Social Worker · Eureka, CA NPI 1982799458 Christine Skotzko Psychiatry Physician · Eureka, CA NPI 1336227669

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-04-11.