Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dan W Caldwell II, HAD

Hearing Instrument Specialist in Surprise, AZ · enumerated 2013.

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

National Provider Identifier

1972845857

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dan W Caldwell II

Credential HAD

Sex Male

Practice address 18747 N Reems Rd, Suite 540, Surprise, AZ, 85374

Phone (623) 214-1700

Enumeration date Mar 19, 2013

Last updated in NPPES Mar 19, 2013

Taxonomy & licenses

237700000X Hearing Instrument Specialist Speech, Language and Hearing Service Providers · License HAD4325 (AZ) Primary

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

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.

What specialty is Dan Caldwell?

Dan Caldwell is registered in NPPES with the primary taxonomy of Hearing Instrument Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-03-19.