Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Amethyst House, Inc.

Substance Abuse Rehabilitation Facility in Bloomington, IN · enumerated 2007 · authorized official Mark Delong, Executive Director.

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

National Provider Identifier

1770709230

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Registry record

Entity type Organization (Type 2)

Legal business name Amethyst House, Inc.

Practice address 645 N Walnut St, Bloomington, IN, 47404

Phone (812) 336-3570

Fax (812) 336-9010

Enumeration date Apr 17, 2007

Last updated in NPPES Sep 26, 2011

Taxonomy & classification

251S00000X Community/Behavioral Health Agency Agencies · License 1279-0 ASR (IN) Secondary

324500000X Substance Abuse Rehabilitation Facility Residential Treatment Facilities · License 1279-0 CA (IN) Primary

Authorized official

Name Mark Delong

Title Executive Director

Phone (812) 336-3570

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

Where is Amethyst House, Inc. located?

The practice location on file with NPPES is in Bloomington, IN.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-09-26. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-26.