NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Andrew Stefan

Registered Nurse in Oakland, CA · enumerated 2025.

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

National Provider Identifier

1508750944

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Andrew Stefan
Sex X
Practice address 3100 Telegraph Ave Ste 350, Oakland, CA, 94609
Phone (800) 607-6377
Enumeration date Jun 9, 2025
Last updated in NPPES Jun 9, 2025

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 95127927 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Andrew Stefan?
Andrew Stefan is registered in NPPES with the primary taxonomy of Registered Nurse. 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-09.