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Jack Lianjie Du, M.D., A Medical Corporation

Psychiatry Physician in Orange, CA · enumerated 2005 · authorized official Jack Du, Owner.

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

National Provider Identifier

1720080294

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Registry record

Entity type Organization (Type 2)
Legal business name Jack Lianjie Du, M.D., A Medical Corporation
Practice address 1100 W Stewart Dr, Orange, CA, 92868
Phone (714) 771-8134
Fax (714) 744-8542
Enumeration date Aug 12, 2005
Last updated in NPPES Nov 29, 2011

Taxonomy & classification

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians Primary
2084P0802X Addiction Psychiatry Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Jack Du
Title Owner
Phone (714) 771-8134

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.

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Frequently asked questions

What is the NPI number for Jack Lianjie Du, M.D., A Medical Corporation?
The NPI for Jack Lianjie Du, M.D., A Medical Corporation is 1720080294, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Jack Lianjie Du, M.D., A Medical Corporation?
NPPES lists Jack Du (Owner) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-29.