Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Avron Marcus, M.D.

Specialist in Glen Burnie, MD · enumerated 2005.

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

National Provider Identifier

1528053956

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Registry record

Entity type Individual (Type 1)

Name Avron Marcus

Credential M.D.

Sex Male

Practice address 802 Landmark Dr Ste 119, Glen Burnie, MD, 21061

Phone (410) 760-8840

Fax (410) 367-2464

Enumeration date Sep 12, 2005

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

174400000X Specialist Other Service Providers · License D0063516 (MD) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 specialty is Avron Marcus?

Avron Marcus is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.