NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Truong D. Duong M.D., A Medical Corporation

Cardiovascular Disease Physician in Rancho Cucamonga, CA · enumerated 2007 · authorized official Truong Duong, Owner.

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

National Provider Identifier

1821280744

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Truong D. Duong M.D., A Medical Corporation
Practice address 9333 Baseline Rd, Suite 120, Rancho Cucamonga, CA, 91730
Phone (877) 773-8664
Fax (877) 773-8640
Enumeration date Aug 14, 2007
Last updated in NPPES Mar 8, 2016

Taxonomy & classification

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License A70137 (CA) Primary

Authorized official

Name Truong Duong
Title Owner
Phone (909) 744-7983

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 is the NPI number for Truong D. Duong M.D., A Medical Corporation?
The NPI for Truong D. Duong M.D., A Medical Corporation is 1821280744, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Truong D. Duong M.D., A Medical Corporation?
NPPES lists Truong Duong (Owner) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-08.