Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Timothy Yan, L.AC.
Acupuncturist in Hercules, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1427198423
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Registry record
Entity type Individual (Type 1)
Name Timothy Yan
Credential L.AC.
Sex Male
Practice address 500 Alfred Nobel Dr Ste 220, Hercules, CA, 94547
Phone (510) 724-8882
Fax (510) 779-5349
Enumeration date Feb 7, 2007
Last updated in NPPES Oct 29, 2018
Taxonomy & licenses
LAC · Licensed Acupuncturist: A practitioner licensed to perform acupuncture.
About the LAC credential
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
Where does Timothy Yan practice?
The practice location on file with NPPES is in Hercules, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Timothy Yan?
The National Provider Identifier (NPI) for Timothy Yan is 1427198423, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-29.