NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Allan R Au MD Inc

Allergy & Immunology Physician in Elk Grove, CA · enumerated 2007 · authorized official Allan Au, Owner.

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

National Provider Identifier

1235280793

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Allan R Au MD Inc
Practice address 9727 Elk Grove Florin Rd, Suite 180, Elk Grove, CA, 95624
Phone (916) 686-8170
Fax (916) 685-8195
Enumeration date Jan 12, 2007
Last updated in NPPES Apr 15, 2008

Taxonomy & classification

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License G76867 (CA) Primary

Authorized official

Name Allan Au
Title Owner
Phone (916) 686-8170

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 type of organization is Allan R Au MD Inc?
Allan R Au MD Inc is registered in NPPES as a Allergy & Immunology Physician (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-15.