Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Robert Abbruzzese

Infectious Disease Physician in Bethesda, MD · enumerated 2005.

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

National Provider Identifier

1154310035

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Robert Abbruzzese

Sex Male

Practice address 6400 Goldsboro Rd, Suite#330, Bethesda, MD, 20817

Phone (301) 320-3361

Fax (301) 320-0170

Enumeration date Oct 13, 2005

Last updated in NPPES Jun 27, 2012

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License MD15748 (DC) Primary

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License D0048226 (MD) Secondary

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

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.

What specialty is Mark Abbruzzese?

Mark Abbruzzese is registered in NPPES with the primary taxonomy of Infectious Disease Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-27.