NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Hai Dong Nguyen, M.D., Corp.

Internal Medicine Physician in Garden Grove, CA · enumerated 2013 · authorized official Hai Nguyen, Physician.

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

National Provider Identifier

1386080554

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Hai Dong Nguyen, M.D., Corp.
Practice address 10402 Westminster Ave, Suit 100b, Garden Grove, CA, 92843
Phone (714) 675-3937
Fax (714) 820-4980
Enumeration date May 15, 2013
Last updated in NPPES Jun 4, 2013

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A114137 (CA) Primary
208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License A114137 (CA) Secondary
208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License A114137 (CA) Secondary

Authorized official

Name Hai Nguyen
Title Physician
Phone (714) 675-3937

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 Hai Dong Nguyen, M.D., Corp. located?
The practice location on file with NPPES is in Garden Grove, CA.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2013-06-04. 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 2013-06-04.