ANN Y. CHANG MD
NPI 1952437527
Internal Medicine in Fairfield, CA

Active since February 26, 2007
1550 GATEWAY BLVD, FAIRFIELD, CA 94533(707) 427-4000 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Ann Y. Chang Md NPPES

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

ANN Y. CHANG MD (NPI 1952437527) is an individual internal medicine provider in Fairfield, California, licensed in California (A63839) and active in the NPI registry since February 2007.

NPPES Registry Identity

NPI1952437527
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameANN Y. CHANGCredential: MD
Location Address1550 GATEWAY BLVDFairfield, CA 94533-6901
Mailing Address1800 Harrison St Fl 7Oakland, CA 94612-3429 · (510) 625-6262
Sole ProprietorNo
Enumeration DateFebruary 26, 2007
Last NPPES UpdateJuly 8, 2007
NPI 1952437527 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in CA · A63839
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.

1550 GATEWAY BLVD, Fairfield, CA 94533

Other Identifiers 3

Medicare UPING91477
Medicare ID-Type Unspecified00A638390
Medicaid00A638390CA

Other Providers at the Same Location NPPES 20

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

Pharmacist (Pharmacotherapy)
1550 GATEWAY BLVD
FAIRFIELD, CA 94533
Pharmacist
1550 GATEWAY BLVD
FAIRFIELD, CA 94533
Pharmacist
1550 GATEWAY BLVD
FAIRFIELD, CA 94533
Internal Medicine
1550 GATEWAY BLVD
FAIRFIELD, CA 94533
Radiology (Diagnostic Radiology)
1550 GATEWAY BLVD
FAIRFIELD, CA 94533
Pediatrics
1550 GATEWAY BLVD
FAIRFIELD, CA 94533
Pediatrics
1550 GATEWAY BLVD
FAIRFIELD, CA 94533
Pediatrics
1550 GATEWAY BLVD
FAIRFIELD, CA 94533

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 Ann Chang's NPI number?

The NPI number for Ann Chang is 1952437527. It was assigned to this individual provider in the NPPES registry on February 26, 2007.

Where is Ann Chang located?

Ann Chang practices at 1550 Gateway Blvd, Fairfield, CA 94533. The listed phone number is (707) 427-4000.

What is Ann Chang'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 Ann Chang was last updated on July 8, 2007. NPI Profile syncs with the weekly NPPES data releases published by CMS.