Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Nelson J. Mar DDS PC

Q: What type of organization is Nelson J. Mar DDS PC?

Nelson J. Mar DDS PC is registered in NPPES as a Dentist (its primary provider taxonomy).

Dentist in Litchfield Park, AZ · enumerated 2018 · authorized official Nelson Mar, Doctor.

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

National Provider Identifier

1104393826

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Registry record

Entity type Organization (Type 2)

Legal business name Nelson J. Mar DDS PC

Practice address 5220 N. Dysart Rd #144, Litchfield Park, AZ, 85340

Phone (623) 536-6845

Fax (623) 536-7989

Enumeration date Oct 31, 2018

Last updated in NPPES Oct 31, 2018

Taxonomy & classification

122300000X Dentist Dental Providers Primary

Authorized official

Name Nelson Mar

Title Doctor

Phone (623) 536-6845

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 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.

What type of organization is Nelson J. Mar DDS PC?

Nelson J. Mar DDS PC is registered in NPPES as a Dentist (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-31.