Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Muller, Hallstein & Beck, LLC

Addiction (Substance Use Disorder) Counselor in Baltimore, MD · enumerated 2026 · authorized official Angel Mazwi, Business Development.

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

National Provider Identifier

1467387332

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Registry record

Entity type Organization (Type 2)

Legal business name Muller, Hallstein & Beck, LLC

Practice address 1705 W Fayette St, Baltimore, MD, 21223

Phone (240) 332-0202

Enumeration date Jun 15, 2026

Last updated in NPPES Jun 15, 2026

Taxonomy & classification

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Primary

Authorized official

Name Angel Mazwi

Title Business Development

Phone (240) 332-0202

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

Where is Muller, Hallstein & Beck, LLC located?

The practice location on file with NPPES is in Baltimore, MD.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2026-06-15. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-15.