NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joseph John Maiorana Jr.

Peer Specialist in Orange, CA · enumerated 2018.

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

National Provider Identifier

1841791050

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Joseph John Maiorana Jr.
Sex Male
Practice address 401 S Tustin St Bldg C, Orange, CA, 92866
Phone (714) 361-4860
Enumeration date Feb 22, 2018
Last updated in NPPES Feb 22, 2018

Taxonomy & licenses

175T00000X Peer Specialist Other Service Providers 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 Joseph Maiorana?
Joseph Maiorana is registered in NPPES with the primary taxonomy of Peer Specialist. 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-02-22.