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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. JAMES L MAST DDS
NPI 1689675571
Dentist - General Practice in Flagstaff, AZ

Active since August 02, 2005
3011 N WEST ST, FLAGSTAFF, AZ 86004(928) 774-2997(928) 556-9545 Get Directions Write a Review

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

About Dr. James L Mast Dds NPPES

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

DR. JAMES L MAST DDS (NPI 1689675571) is an individual general practice provider in Flagstaff, Arizona, licensed in Arizona (1905) and active in the NPI registry since August 2005.

NPPES Registry Identity

NPI1689675571
Entity TypeIndividualMale
Primary Taxonomy1223G0001X
Provider Legal NameDR. JAMES L MASTCredential: DDS
Location Address3011 N WEST STFlagstaff, AZ 86004-3444
Mailing Address3011 N West StFlagstaff, AZ 86004-3444 · (928) 774-2997 · Fax (928) 556-9545
Phone(928) 774-2997
Fax(928) 556-9545
Sole ProprietorNo
Enumeration DateAugust 2, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1689675571 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers
Taxonomy Code1223G0001X
License✔ Licensed in AZ · 1905
Definition
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
3011 N WEST ST, Flagstaff, AZ 86004
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Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DEBBO DUCLOS RN
Registered Nurse
3011 N WEST ST
FLAGSTAFF, AZ 86004
Coconino County (928) 214-8793
JAMES L. MAST, DDS, PC
Dentist (General Practice)
3011 N WEST ST
FLAGSTAFF, AZ 86004
Coconino County (928) 774-2997

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 James Mast's NPI number?

The NPI number for James Mast is 1689675571. It was assigned to this individual provider in the NPPES registry on August 2, 2005.

Where is James Mast located?

James Mast practices at 3011 N West St, Flagstaff, AZ 86004. The listed phone number is (928) 774-2997.

What is James Mast's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

When was this NPI record last updated?

The NPPES record for James Mast 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 21 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.