Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Min-Shong Chang, MD

Internal Medicine Physician in Hayward, CA · enumerated 2006.

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

National Provider Identifier

1063479269

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Registry record

Entity type Individual (Type 1)

Name Min-Shong Chang

Credential MD

Sex Male

Practice address Hayward, CA, 94545

Phone (510) 782-1972

Fax (510) 782-1973

Enumeration date May 1, 2006

Last updated in NPPES Jun 15, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A37315 (CA) 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
00A373150	Medicaid	CA	-

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Min-Shong Chang?

Min-Shong Chang is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Professional Nurses Inc Home Health Agency · Hayward, CA NPI 1578624243 Pouran Abbaszadeh General Practice Dentistry · Hayward, CA NPI 1124178140 Sam Healthcare Corporation Home Health Agency · Hayward, CA NPI 1386771848 Min Shong Chang MD A Professional Corporation Internal Medicine Physician · Hayward, CA NPI 1790090751

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-15.