Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Khanh Tan Duong, MD

Internal Medicine Physician in Montclair, CA · enumerated 2018 · practices at Khanh Tan Duong MD PC.

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

National Provider Identifier

1225528466

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Registry record

Entity type Individual (Type 1)

Name Khanh Tan Duong

Credential MD

Sex Male

Practice address 9635 Monte Vista Ave Ste 208, Montclair, CA, 91763

Phone (909) 255-0199

Fax (216) 208-1435

Enumeration date May 14, 2018

Last updated in NPPES Feb 25, 2022

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License BP10064981 (TX) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A174153 (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

How do I verify Khanh Duong's NPI record?

Cross-check NPI 1225528466 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1225528466 active?

Yes, as of the latest NPPES snapshot, NPI 1225528466 is active (record last updated 2022-02-25).

Other providers at this practice address

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Khanh Tan Duong MD PC Primary Care Clinic/Center · Montclair, CA NPI 1174237150

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-02-25.