NPI Portal NPI Lookup & Verification

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

Mr. Oliver Bryan Tan Ngan, REGISTERED NURSE

Administrator Registered Nurse in Stockton, CA · enumerated 2024 · practices at Ielo Care LLC.

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

National Provider Identifier

1396587077

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Registry record

Entity type Individual (Type 1)
Name Mr. Oliver Bryan Tan Ngan
Credential REGISTERED NURSE
Sex Male
Practice address Stockton, CA, 95209
Phone (559) 380-6641
Fax (209) 451-2561
Enumeration date Jun 12, 2024
Last updated in NPPES Jun 12, 2024

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

Taxonomy & licenses

163WG0000X General Practice Registered Nurse Nursing Service Providers · License 735801 (CA) Secondary
163WH1000X Hospice Registered Nurse Nursing Service Providers · License 735801 (CA) Secondary
163WA2000X Administrator Registered Nurse Nursing Service Providers · License 735801 (CA) 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

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.
What specialty is Oliver Bryan Ngan?
Oliver Bryan Ngan is registered in NPPES with the primary taxonomy of Administrator Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-12.