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CHIEN-KO WU, M.D. AND MEEI-LING T WU, M.D., INC.
NPI 1083820856
Internal Medicine in Orange, CA

Active since May 16, 2007
991 N TUSTIN ST, SUITE 101, ORANGE, CA 92867(714) 639-6162 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Sep 11, 2025, Aug 22, 2020 (2 updates tracked since 2020).

About Chien-ko Wu, M.d. And Meei-ling T Wu, M.d., Inc. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CHIEN-KO WU, M.D. AND MEEI-LING T WU, M.D., INC. (NPI 1083820856) is a healthcare organization registered as an internal medicine in Orange, California and active in the NPI registry since May 2007. The organization lists Chien-ko Wu, Co-president, as its authorized official.

NPPES Registry Identity

NPI1083820856
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameCHIEN-KO WU, M.D. AND MEEI-LING T WU, M.D., INC.
Location Address991 N TUSTIN ST, SUITE 101Orange, CA 92867-5900
Mailing Address991 N Tustin St, Suite 101Orange, CA 92867-5900 · (714) 639-6162
Phone(714) 639-6162
Organization SubpartNo
Authorized OfficialChien-ko WuCo-president · (714) 639-6162
Enumeration DateMay 16, 2007
Last NPPES UpdateSeptember 11, 20252 updates tracked since enumeration
✔ NPI 1083820856 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A38491
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedOphthalmologyTaxonomy 207W00000X · License A40891 (CA)
991 N TUSTIN ST, Orange, CA 92867
Open in Google Maps ↗

Other Identifiers 4

OtherA38491CA · Chien-ko Wu, M.d.
Medicaid00A384910CA
OtherA40891CA · Meei-ling T Wu, M.d.
Medicaid00A408910CA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MEEI-LING TUNG WU M.D.
Ophthalmology
991 N TUSTIN ST, SUITE 101
ORANGE, CA 92867
Orange County (714) 639-6162
DR. CHIEN-KO WU M.D.
Internal Medicine
991 N TUSTIN ST, SUITE 101
ORANGE, CA 92867
Orange County (714) 639-6162
GRACE T WU MD
Ophthalmology
991 N TUSTIN ST, SUITE 101
ORANGE, CA 92867
Orange County (714) 639-6162

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Chien-Ko Wu, M.D. And Meei-Ling T Wu, M.D., Inc.'s NPI number?

The NPI number for Chien-Ko Wu, M.D. And Meei-Ling T Wu, M.D., Inc. is 1083820856. It was assigned to this organization in the NPPES registry on May 16, 2007.

Where is Chien-Ko Wu, M.D. And Meei-Ling T Wu, M.D., Inc. located?

Chien-Ko Wu, M.D. And Meei-Ling T Wu, M.D., Inc. is located at 991 N Tustin St Suite 101, Orange, CA 92867. The listed phone number is (714) 639-6162.

What is Chien-Ko Wu, M.D. And Meei-Ling T Wu, M.D., Inc.'s specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Chien-Ko Wu, M.D. And Meei-Ling T Wu, M.D., Inc. was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.