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Marian House, Inc.

Substance Abuse Rehabilitation Facility in Baltimore, MD · enumerated 2023 · authorized official Katherine Allston, Exdecutive Director.

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

National Provider Identifier

1801573936

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Registry record

Entity type Organization (Type 2)
Legal business name Marian House, Inc.
Practice address 4101 Old York Rd, Baltimore, MD, 21218
Phone (410) 467-4121
Fax (410) 467-6709
Enumeration date Jun 30, 2023
Last updated in NPPES Sep 12, 2023

Taxonomy & classification

251S00000X Community/Behavioral Health Agency Agencies Secondary
261QR0405X Substance Use Disorder Rehabilitation Clinic/Center Ambulatory Health Care Facilities Secondary
324500000X Substance Abuse Rehabilitation Facility Residential Treatment Facilities Primary

Authorized official

Name Katherine Allston
Title Exdecutive Director
Phone (410) 467-4121

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.

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Frequently asked questions

What is the NPI number for Marian House, Inc.?
The NPI for Marian House, Inc. is 1801573936, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Marian House, Inc.?
NPPES lists Katherine Allston (Exdecutive Director) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-12.