Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dianne Joyner, RCS, RVS, RVT

Sonography Specialist/Technologist Cardiovascular in Palm Harbor, FL · enumerated 2012.

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

National Provider Identifier

1578820650

Verified

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Registry record

Entity type Individual (Type 1)

Name Dianne Joyner

Credential RCS, RVS, RVT

Sex Female

Practice address 455 Alternate 19 S, #63, Palm Harbor, FL, 34683

Phone (850) 206-4800

Enumeration date Apr 13, 2012

Last updated in NPPES Apr 13, 2012

Taxonomy & licenses

246XS1301X Sonography Specialist/Technologist Cardiovascular Technologists, Technicians & Other Technical Service Providers · License 55827 (TX) Primary

2471V0105X Vascular Sonography Radiologic Technologist Technologists, Technicians & Other Technical Service Providers · License 110943 (FL) Secondary

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

What specialty is Dianne Joyner?

Dianne Joyner is registered in NPPES with the primary taxonomy of Sonography Specialist/Technologist Cardiovascular. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-13.