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

Pei-Feng Tsai, MC18113

Interpreter in Bellevue, WA · enumerated 2020.

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

National Provider Identifier

1952916249

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Registry record

Entity type Individual (Type 1)

Name Pei-Feng Tsai

Credential MC18113

Sex Female

Practice address Bellevue, WA, 98007

Phone (425) 894-2877

Enumeration date Sep 13, 2020

Last updated in NPPES Sep 13, 2020

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

Taxonomy & licenses

171R00000X Interpreter Other Service Providers · License MC18113 (WA) 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

Where does Pei-Feng Tsai practice?

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

What is the NPI number for Pei-Feng Tsai?

The National Provider Identifier (NPI) for Pei-Feng Tsai is 1952916249, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-13.