---
title: "[MI/URSA-CORE] NPI to NUCC Provider Taxonomy Code Crosswalk"
slug: "mi-ursa-core-npi-to-nucc-provider-taxonomy-code-crosswalk"
updated: 2026-11-04T20:15:31Z
published: 2026-11-04T20:15:31Z
canonical: "docs.ursahealth.com/mi-ursa-core-npi-to-nucc-provider-taxonomy-code-crosswalk"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ursahealth.com/llms.txt
> Use this file to discover all available pages before exploring further.

# [MI/URSA-CORE] NPI to NUCC Provider Taxonomy Code Crosswalk

## Object Description

One record per unique NPI and NUCC provider taxonomy code combination.

The sources for this object are the CMS National Plan and Provider Enumeration System (NPPES) and the National Uniform Claim Committee (NUCC).

Ursa Studio Update Cadence: Quarterly

## Metadata

- **Table Name**: ursa.mi_ursa_core_115
- **Layer**: METADATA_AND_INTEGRATION
- **Object Type**: Ursa Reference
- **Temporal Class**: Entity
- **Case ID**: Provider NPI, NUCC Provider Taxonomy Code
- **Primary Key**: Provider NPI, NUCC Provider Taxonomy Code

## Published Fields

- **[No Field Group]**
  - Provider NPI
  - NUCC Provider Taxonomy Code
  - NUCC Provider Taxonomy Description
  - NUCC Provider Taxonomy Tier 1 Description -- The natural language description of a given NUCC Taxonomy Code's category using the first, coarsest-grain classification in the NUCC system. (The code's "Grouping" in the original NUCC nomenclature.)
  - NUCC Provider Taxonomy Tier 2 Description -- The natural language description of a given NUCC Taxonomy Code's category using the second classification in the NUCC system. (The code's "Classification" in the original NUCC nomenclature.)
  - Is Primary