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

Marlene Malaguit De Castro, R.N.

Home Health Registered Nurse in Arcadia, CA · enumerated 2010.

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

National Provider Identifier

1093029423

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Registry record

Entity type Individual (Type 1)
Name Marlene Malaguit De Castro
Credential R.N.
Sex Female
Practice address Arcadia, CA, 91006
Phone (626) 446-5468
Fax (626) 446-7068
Enumeration date Jul 27, 2010
Last updated in NPPES Jul 28, 2010

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

Taxonomy & licenses

163WH0200X Home Health Registered Nurse Nursing Service Providers · License 457539 (CA) Primary
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

Other identifiers

Identifier Type State Issuer
05-9163 Medicaid CA -

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

Where does Marlene De Castro practice?
The practice location on file with NPPES is in Arcadia, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marlene De Castro?
The National Provider Identifier (NPI) for Marlene De Castro is 1093029423, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-28.