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

Dr. Sophia S Chang, M.D.

Rheumatology Physician in Pasco, WA · enumerated 2005 · practices at Our Lady of Lourdes Health Center.

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

National Provider Identifier

1588658074

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Registry record

Entity type Individual (Type 1)

Name Dr. Sophia S Chang

Credential M.D.

Sex Female

Practice address Pasco, WA, 99301

Phone (509) 547-6086

Fax (509) 547-0649

Enumeration date Sep 11, 2005

Last updated in NPPES Sep 16, 2014

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

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License MD00036177 (WA) 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
MD00036177	Other	WA	STATE MEDICAL LICENSE

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 specialty is Sophia Chang?

Sophia Chang is registered in NPPES with the primary taxonomy of Rheumatology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Other providers at this practice address

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Our Lady of Lourdes Health Center Obstetrics & Gynecology Physician · Pasco, WA NPI 1346318920 David Saunders Specialist · Pasco, WA NPI 1346305620

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-09-16.