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

Yen Pei Christy Chang, MS.

Professional Counselor in Timonium, MD · enumerated 2022 · practices at Continuing Care Treatment Center.

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

National Provider Identifier

1447989918

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Registry record

Entity type Individual (Type 1)

Name Yen Pei Christy Chang

Credential MS.

Sex Female

Practice address Timonium, MD, 21093

Phone (443) 729-0828

Enumeration date Jun 8, 2022

Last updated in NPPES Jun 8, 2022

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

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary

101YP2500X Professional Counselor Behavioral Health & Social Service Providers Primary

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 Yen Pei Chang?

The National Provider Identifier (NPI) for Yen Pei Chang is 1447989918, a Type 1 (individual) record in the CMS NPPES registry.

Where does Yen Pei Chang practice?

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

Other providers at this practice address

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Continuing Care Treatment Center Community/Behavioral Health Agency · Timonium, MD NPI 1831931658

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-08.