Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alvin Chan, MD

Neurological Surgery Physician in Irvine, CA · enumerated 2018.

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

National Provider Identifier

1356833271

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Registry record

Entity type Individual (Type 1)

Name Alvin Chan

Credential MD

Sex Male

Practice address 16300 Sand Canyon Ave Ste 511, Irvine, CA, 92618

Phone (949) 255-9755

Enumeration date Jun 6, 2018

Last updated in NPPES Jun 11, 2025

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License A163705 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

Is NPI 1356833271 active?

Yes, as of the latest NPPES snapshot, NPI 1356833271 is active (record last updated 2025-06-11).

How do I verify Alvin Chan's NPI record?

Cross-check NPI 1356833271 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Casey Slattery Orthopaedic Surgery of the Spine Physician · Irvine, CA NPI 1356905277 Lindsey Mccloskey Family Nurse Practitioner · Irvine, CA NPI 1912689191

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-11.