NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mack and Hansen Orthodontics, Pllc

Orthodontics and Dentofacial Orthopedics Dentistry in Longview, TX · enumerated 2017 · authorized official Spencer Mack, Owner/Orthodontist.

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

National Provider Identifier

1033628920

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Mack and Hansen Orthodontics, Pllc
Other name <Unavail>
Practice address 1405 Judson Rd, Longview, TX, 75601
Phone (903) 212-7737
Fax (903) 212-7745
Enumeration date Sep 24, 2017
Last updated in NPPES Nov 4, 2020

Taxonomy & classification

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers Primary
261QD0000X Dental Clinic/Center Ambulatory Health Care Facilities Secondary
261QD0000X Dental Clinic/Center Ambulatory Health Care Facilities · License 30007 (TX) Secondary

Authorized official

Name Spencer Mack
Title Owner/Orthodontist
Phone (903) 212-7737

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

Where is Mack and Hansen Orthodontics, Pllc located?
The practice location on file with NPPES is in Longview, TX.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-11-04. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-04.