Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Doctors Next Door

Q: What type of organization is Doctors Next Door?

Doctors Next Door is registered in NPPES as a Specialist (its primary provider taxonomy).

Specialist in Silver Spring, MD · enumerated 2012 · authorized official Tammy Mallow, Director of Advisor Svcs.

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

National Provider Identifier

1467726190

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Registry record

Entity type Organization (Type 2)

Legal business name Doctors Next Door

Practice address 10801 Lockwood Dr, Ste 160, Silver Spring, MD, 20901

Phone (301) 592-0885

Enumeration date Feb 27, 2012

Last updated in NPPES May 7, 2012

Taxonomy & classification

174400000X Specialist Other Service Providers Primary

Authorized official

Name Tammy Mallow

Title Director of Advisor Svcs

Phone (877) 697-4696

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 is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Doctors Next Door?

Doctors Next Door is registered in NPPES as a Specialist (its primary provider taxonomy).

Providers at this address

Browse all →

Franz Byars Nurse Practitioner · Silver Spring, MD NPI 1477555795 Barry Rubin Gastroenterology Physician · Silver Spring, MD NPI 1770580607 Richard Broth Maternal & Fetal Medicine Physician · Silver Spring, MD NPI 1508854555 Charles Travers Obstetrics Physician · Silver Spring, MD NPI 1477534063 Jessica Berger-Weiss Gynecology Physician · Silver Spring, MD NPI 1730161522 Milton Koch Gastroenterology Physician · Silver Spring, MD NPI 1275510257 Kathleen Kadow Pediatrics Physician · Silver Spring, MD NPI 1366415077 D & D Diagnostics, LLC Diagnostic Radiology Physician · Silver Spring, MD NPI 1811963622

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