Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Alan Masaaki Ooka, APRN, BC, P-MHNP

Psychiatric/Mental Health Nurse Practitioner in Laguna Hills, CA · enumerated 2005.

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

National Provider Identifier

1114924230

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Registry record

Entity type Individual (Type 1)

Name Mr. Alan Masaaki Ooka

Credential APRN, BC, P-MHNP

Sex Male

Practice address 23521 Paseo De Valencia, Suite 206a, Laguna Hills, CA, 92653

Phone (949) 768-6845

Fax (949) 768-5124

Enumeration date Jul 5, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN 562338 (CA) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN 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 specialty is Alan Ooka?

Alan Ooka is registered in NPPES with the primary taxonomy of Psychiatric/Mental Health Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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