Individual provider

Andrew Horne, D.D.S.

Orthodontics and Dentofacial Orthopedics Dentistry

Andrew Horne, D.D.S. is a provider specialising in Orthodontics and Dentofacial Orthopedics Dentistry in Phoenix, AZ, registered under NPI 1023475084. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.

Getting there

The practice address on file is 4008 N 33RD AVE, Phoenix, AZ 85017. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.

4008 N 33RD AVE, Phoenix, AZ 85017 Open in Google Maps →

Credentials and Medicare

State licence
LicenceStateSpecialty
D010974 AZ Orthodontics and Dentofacial Orthopedics… primary
41250 TX Orthodontics and Dentofacial Orthopedics…
DEN.00202691 CO Orthodontics and Dentofacial Orthopedics…

Licences are recorded in 3 states: AZ, TX, CO. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.

Medicare (PECOS)

This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.

Licensed in 3 states

This provider holds licences in 3 states: Arizona, Colorado and Texas. The practice address on file is in Phoenix, AZ, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.

AZ Arizona practice address
Licence
D010974
Specialty
Orthodontics and Dentofacial…
Verify with the AZ board →
CO Colorado
Licence
DEN.00202691
Specialty
Orthodontics and Dentofacial…
Verify with the CO board →
TX Texas
Licence
41250
Specialty
Orthodontics and Dentofacial…
Verify with the TX board →

Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.

What Orthodontics and Dentofacial Orthopedics covers

That area of dentistry concerned with the supervision, guidance and correction of the growing or mature dentofacial structures, including those conditions that require movement of teeth or correction of malrelationships and malformations of their related structures and the adjustment of relationships between and among teeth and facial bones by the application of forces and/or the stimulation and redirection of functional forces within the craniofacial complex. Major responsibilities of orthodontic practice include the diagnosis, prevention, interception and treatment of all forms of malocclusion of the teeth and associated alterations in their surrounding structures; the design, application and control of functional and corrective appliances; and the guidance of the dentition and its supporting structures to attain and maintain optimum occlusal relations in physiologic and esthetic harmony among facial and cranial structures. NUCC Health Care Provider Taxonomy, code 1223X0400X
Dental Providers Dentist Orthodontics and Dentofacial Orthopedics

All registered taxonomy codes

This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.

CodeSpecialtyLicenceState
1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Orthodontics and Dentofacial Orthopedics D010974 AZ primary
1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Orthodontics and Dentofacial Orthopedics 41250 TX
1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Orthodontics and Dentofacial Orthopedics DEN.00202691 CO

The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.

Full NPPES record

An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.

NPI1023475084 valid check digit
Entity typeIndividual (NPI-1)
Enumeration dateJan 21, 2016
Last updatedNov 6, 2025
StatusActive
Sole proprietorYes
CredentialD.D.S.
Practice address 4008 N 33RD AVE
Phoenix, AZ 85017
(602) 610-3226
This record was updated on Nov 6, 2025, which is recent enough that the contact details are likely still accurate.

Number check

1023475084 passes the NPI check digit test The final digit 4 matches the value computed from the first nine digits, so this is a well-formed NPI.
How the check works, step by step

Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.

Digit 8 0 8 4 0 1 0 2 3 4 7 5 0 8
Doubled? ×2 ×2 ×2 ×2 ×2 ×2 ×2
Value 8 0 8 8 0 2 0 4 3 8 7 1 0 7

Sum = 56 · next multiple of 10 = 60 · check digit = 4 · actual last digit = 4

A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.

Common questions

What is NPI number 1023475084?
NPI 1023475084 is the National Provider Identifier assigned to Andrew Horne, D.D.S. in Phoenix, AZ. It is a 10-digit number issued by the Centers for Medicare & Medicaid Services and used on claims, referrals, and prescriptions to identify the provider.
What does Orthodontics and Dentofacial Orthopedics cover?
That area of dentistry concerned with the supervision, guidance and correction of the growing or mature dentofacial structures, including those conditions that require movement of teeth or correction of malrelationships and malformations of their related structures and the adjustment of relationships between and among…
How do I contact Andrew Horne, D.D.S.?
The phone number on file with NPPES is (602) 610-3226, last updated Nov 6, 2025. Because NPPES is only updated when a provider files a change, call ahead to confirm the number and the current practice address before visiting.
Is NPI 1023475084 a valid number?
Yes. 1023475084 passes the Luhn check digit validation that CMS uses for NPI numbers, and it resolves to an active record in the registry.
How to use this page. Everything here comes from public federal records. Tips Health does not verify quality of care, confirm that a licence is currently active, or check malpractice history, and accepts no fees for placement. A listing is not a recommendation. Verify independently before seeking care.