Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Alexander Dennis

Exclusive Provider Organization in Orange, CA · enumerated 2011 · practices at Mhaoc.

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

National Provider Identifier

1790061398

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Registry record

Entity type Individual (Type 1)

Name Alexander Dennis

Sex Male

Practice address Orange, CA, 92868

Phone (714) 543-4431

Enumeration date Oct 26, 2011

Last updated in NPPES Oct 26, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

302F00000X Exclusive Provider Organization Managed Care Organizations 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

What specialty is Alexander Dennis?

Alexander Dennis is registered in NPPES with the primary taxonomy of Exclusive Provider Organization. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-26.