Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Doctors Next Door

Specialist in Silver Spring, MD · enumerated 2011 · authorized official Mario Majette, Medical Director.

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

National Provider Identifier

1407146293

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Registry record

Entity type Organization (Type 2)

Legal business name Doctors Next Door

Practice address 10125 Colesville Rd, #153, Silver Spring, MD, 20901

Phone (301) 335-6148

Fax (703) 533-5536

Enumeration date Apr 13, 2011

Last updated in NPPES May 11, 2012

Taxonomy & classification

174400000X Specialist Other Service Providers Primary

Authorized official

Name Mario Majette

Title Medical Director

Phone (301) 335-6148

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2012-05-11. Verify at npiregistry.cms.hhs.gov.

Where is Doctors Next Door located?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-05-11.