Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Chi Chang Od, Inc.

Q: What type of organization is Chi Chang Od, Inc.?

Chi Chang Od, Inc. is registered in NPPES as a Optometrist (its primary provider taxonomy).

Optometrist in Monroe, WA · enumerated 2007 · authorized official Chi Chang, President.

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

National Provider Identifier

1821110883

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Registry record

Entity type Organization (Type 2)

Legal business name Chi Chang Od, Inc.

Practice address 18805 State Route 2 Ste A, Monroe, WA, 98272

Phone (360) 805-9323

Fax (360) 805-0467

Enumeration date Apr 3, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 3812TX (WA) Primary

Authorized official

Name Chi Chang

Title President

Phone (206) 769-1918

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 type of organization is Chi Chang Od, Inc.?

Chi Chang Od, Inc. is registered in NPPES as a Optometrist (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.