Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Steve Won-Tze Chang, MD

Q: What is the NPI number for Steve Chang?

The National Provider Identifier (NPI) for Steve Chang is 1154501294, a Type 1 (individual) record in the CMS NPPES registry.

Neurological Surgery Physician in Chandler, AZ · enumerated 2007 · practices at Neurosurgical Associates, Ltd.

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

National Provider Identifier

1154501294

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Registry record

Entity type Individual (Type 1)

Name Steve Won-Tze Chang

Credential MD

Sex Male

Practice address 1875 W Frye Rd Ste 300, Chandler, AZ, 85224

Phone (602) 406-3112

Fax (602) 406-4187

Enumeration date Nov 6, 2007

Last updated in NPPES May 8, 2025

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 42069 (AZ) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
434630	Medicaid	AZ	-

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

What is the NPI number for Steve Chang?

The National Provider Identifier (NPI) for Steve Chang is 1154501294, a Type 1 (individual) record in the CMS NPPES registry.

Where does Steve Chang practice?

The practice location on file with NPPES is in Chandler, AZ. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-08.