NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

John W Masters DDS Inc

Endodontics in Chula Vista, CA · enumerated 2006 · authorized official John Masters, President.

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

National Provider Identifier

1255436739

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name John W Masters DDS Inc
Other name <Unavail>
Practice address 273 Church Ave, Chula Vista, CA, 91910
Phone (619) 426-4206
Fax (619) 426-7604
Enumeration date Sep 13, 2006
Last updated in NPPES Aug 22, 2020

Taxonomy & classification

1223E0200X Endodontics Dental Providers · License 40965 (CA) Primary
1223E0200X Endodontics Dental Providers · License 6036 (CO) Secondary

Authorized official

Name John Masters
Title President
Phone (619) 426-2250

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

What type of organization is John W Masters DDS Inc?
John W Masters DDS Inc is registered in NPPES as a Endodontics (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.