NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

A-One Medical Group, Inc. A Professional Corporation

Family Medicine Physician in Diamond Bar, CA · enumerated 2008 · authorized official David Lee, President.

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

National Provider Identifier

1790945632

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name A-One Medical Group, Inc. A Professional Corporation
Practice address 2705 S Diamond Bar Blvd, Suite 118, Diamond Bar, CA, 91765
Phone (626) 965-1988
Enumeration date Jun 13, 2008
Last updated in NPPES Aug 3, 2017

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 20A7715 (CA) Primary

Authorized official

Name David Lee
Title President
Phone (626) 965-1988

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

Where is A-One Medical Group, Inc. A Professional Corporation located?
The practice location on file with NPPES is in Diamond Bar, CA.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2017-08-03. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-08-03.