Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Chi Nan Yen
Acupuncturist in Walnut Creek, CA · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1295598084
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Registry record
Entity type Individual (Type 1)
Name Chi Nan Yen
Sex Male
Practice address 1840 San Miguel Dr Ste 203, Walnut Creek, CA, 94596
Phone (925) 391-0066
Enumeration date Feb 5, 2024
Last updated in NPPES Feb 5, 2024
Taxonomy & licenses
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.
Frequently asked questions
What is the NPI number for Chi Nan Yen?
The National Provider Identifier (NPI) for Chi Nan Yen is 1295598084, a Type 1 (individual) record in the CMS NPPES registry.
Where does Chi Nan Yen practice?
The practice location on file with NPPES is in Walnut Creek, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-05.