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Majormedical LLC Portable Diagnostics

Family Medicine Physician in Silver Spring, MD · enumerated 2010 · authorized official Mark Major, Owner/Ceo.

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

National Provider Identifier

1639497308

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Registry record

Entity type Organization (Type 2)
Legal business name Majormedical LLC Portable Diagnostics
Practice address 8241 Georgia Ave, Suite 102, Silver Spring, MD, 20910
Phone (301) 585-1833
Fax (240) 235-3898
Enumeration date May 5, 2010
Last updated in NPPES May 5, 2010

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License D0064592 (MD) Primary
2085U0001X Diagnostic Ultrasound Physician Allopathic & Osteopathic Physicians · License D0064592 (MD) Secondary
2085U0001X Diagnostic Ultrasound Physician Allopathic & Osteopathic Physicians · License MD036021 (DC) Secondary

Authorized official

Name Mark Major
Title Owner/Ceo
Phone (301) 585-1833

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 Majormedical LLC Portable Diagnostics located?
The practice location on file with NPPES is in Silver Spring, MD.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2010-05-05. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-05-05.