Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. JOHN WILLIAM DAY DMD, MS
NPI 1447255120
Dentist - Orthodontics and Dentofacial Orthopedics in Tucson, AZ

Active since June 17, 2005PECOS Enrolled
720 N COUNTRY CLUB RD, TUCSON, AZ 85716(520) 326-6658 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 13, 2026, Jan 22, 2026 (2 updates tracked since 2026).

About Dr. John William Day Dmd, Ms NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOHN WILLIAM DAY DMD, MS (NPI 1447255120) is an individual orthodontics and dentofacial orthopedics provider in Tucson, Arizona, licensed in Arizona (2470) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS and maintains a secondary practice location in Tucson.

NPPES Registry Identity

NPI1447255120
Entity TypeIndividualMale
Primary Taxonomy1223X0400X
Provider Legal NameDR. JOHN WILLIAM DAYCredential: DMD, MS
Location Address720 N COUNTRY CLUB RDTucson, AZ 85716-4506
Mailing Address720 N Country Club RdTucson, AZ 85716-4506 · (520) 326-6658
Sole ProprietorNo
Enumeration DateJune 17, 2005
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 22, 2026
NPI 1447255120 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyDentist · Orthodontics and Dentofacial OrthopedicsDental Providers
Taxonomy Code1223X0400X
License Licensed in AZ · 2470
Definition
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.
720 N COUNTRY CLUB RD, Tucson, AZ 85716

Secondary Practice Location 1

Location 11500 W Commerce Ct Bldg 1Tucson, AZ 85746-6074 · Phone (520) 670-3909 · Fax (520) 309-2560

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Dr. John William Day Dmd, Ms is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85716 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$85.89 typical visit price
range $55.44 – $168.60
Typical copayment $21.47 (range $13.86 – $42.15)
Most-billed visit code 99203
Established Patient
$69.24 typical visit price
range $17.72 – $137.41
Typical copayment $17.31 (range $4.43 – $34.35)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Day's NPI number?

The NPI number for John Day is 1447255120. It was assigned to this individual provider in the NPPES registry on June 17, 2005.

Where is John Day located?

John Day practices at 720 N Country Club Rd, Tucson, AZ 85716. The listed phone number is (520) 326-6658.

What is John Day's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Orthodontics and Dentofacial Orthopedics, with taxonomy code 1223X0400X.

Is John Day enrolled in Medicare?

Yes. John Day is registered in the Medicare PECOS enrollment system.

What insurance does John Day accept?

Health plans from Anthem Blue Cross and Blue Shield, BEST Life, Blue Cross Blue Shield of Arizona, Blue Cross and Blue Shield of Montana and Blue Cross and Blue Shield of Oklahoma and 10 other insurers list John Day as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for John Day was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.