Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William Robert Janz, PA
Physician Assistant in Vista, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1154338630
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Registry record
Entity type Individual (Type 1)
Name William Robert Janz
Credential PA
Sex Male
Practice address 130 Cedar Rd # 100, Vista, CA, 92083
Phone (760) 806-5400
Enumeration date Aug 1, 2006
Last updated in NPPES Feb 13, 2013
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA11580 (CA) Primary
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program.
About the PA 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
What is the NPI number for William Janz?
The National Provider Identifier (NPI) for William Janz is 1154338630, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Janz practice?
The practice location on file with NPPES is in Vista, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Deryien Chen Family Medicine Physician · Vista, CA NPI 1902820103 Telesforo Molina Emergency Medicine Physician · Vista, CA NPI 1972527109 Kusum Sinha Family Medicine Physician · Vista, CA NPI 1306852363 John Baker Emergency Medicine Physician · Vista, CA NPI 1942219092 Ira Meiberger General Practice Physician · Vista, CA NPI 1346250461
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-02-13.