John Day, DMD, MS
NPI 1447255120 · Orthodontics and Dentofacial Orthopedics Dentistry · Tucson, AZ
Enrolled with Medicare as Practitioner - Oral Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Day, DMD, MS is a Orthodontics and Dentofacial Orthopedics Dentistry provider in Tucson, AZ (NPI 1447255120).
Provider details
- NPI number
- 1447255120
- Entity type
- Individual
- Primary specialty
- Orthodontics and Dentofacial Orthopedics DentistryDental Providers
- Credential
- DMD, MS
- Sex
- Male
- License
- 2470 (AZ)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
21 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 1500 W Commerce Ct Bldg 1Tucson, AZ 85746-6074Phone: (520) 670-3909Fax: (520) 309-2560
Registry dates
- Enumerated
- 2005-06-17
- Last updated
- 2026-01-22
- Certified
- 2026-01-22
Frequently asked questions
- What is John Day's NPI number?
- John Day's National Provider Identifier (NPI) is 1447255120, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Day's specialty?
- John Day is listed in the NPPES registry with a primary specialty of Orthodontics and Dentofacial Orthopedics Dentistry (Dental Providers).
- Where is John Day located?
- John Day's practice location on file with NPPES is 720 N Country Club Rd, Tucson, AZ 85716-4506.
- What is John Day's phone number?
- The practice phone number listed in the NPPES registry for John Day is (520) 326-6658.
- Does John Day accept Medicare?
- John Day is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Day's NPI active?
- Yes — John Day's NPI (1447255120) is active in the NPPES registry as of the last update on 2026-01-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.