Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Carroll Institute

Q: What type of organization is Carroll Institute?

Carroll Institute is registered in NPPES as a Mental Health Counselor (its primary provider taxonomy).

Mental Health Counselor in Sioux Falls, SD · enumerated 2017 · authorized official Alex Leighton, Office Manager.

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

National Provider Identifier

1255868220

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Registry record

Entity type Organization (Type 2)

Legal business name Carroll Institute

Other name <Unavail>

Practice address 5625 S Southeastern Ave, Sioux Falls, SD, 57108

Phone (605) 271-3441

Fax (605) 271-4809

Enumeration date May 22, 2017

Last updated in NPPES Aug 9, 2021

Taxonomy & classification

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Primary

Authorized official

Name Alex Leighton

Title Office Manager

Phone (605) 271-3441

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 Carroll Institute?

Carroll Institute is registered in NPPES as a Mental Health Counselor (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-09.