Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Joseph Michael Diaz, PA-C
Physician Assistant in Ventura, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1023114709
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Registry record
Entity type Individual (Type 1)
Name Mr. Joseph Michael Diaz
Credential PA-C
Sex Male
Practice address 10885 Telegraph Rd, Ventura, CA, 93004
Phone (805) 647-7704
Fax (833) 916-2148
Enumeration date Sep 16, 2006
Last updated in NPPES Sep 22, 2021
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA11970 (CA) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| PA1170 | Other | CA | PHYSICIAN ASSISTANT -CERT |
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
Is NPI 1023114709 active?
Yes, as of the latest NPPES snapshot, NPI 1023114709 is active (record last updated 2021-09-22).
How do I verify Joseph Diaz's NPI record?
Cross-check NPI 1023114709 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Michael Bailey Family Medicine Physician · Ventura, CA NPI 1770584484 Susan Renteria Nurse Practitioner · Ventura, CA NPI 1881631786 Sherilyn Wheaton Family Medicine Physician · Ventura, CA NPI 1205861234 Patricia Wade Family Nurse Practitioner · Ventura, CA NPI 1497850150 Andrea Ramirez Family Nurse Practitioner · Ventura, CA NPI 1396985784
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-22.