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Dr. John Specht Maddox, MD

Trauma Surgery Physician in Bethesda, MD · enumerated 2006.

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

National Provider Identifier

1528122256

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Registry record

Entity type Individual (Type 1)
Name Dr. John Specht Maddox
Credential MD
Sex Male
Practice address Walter Reed National Military Ctr, 8901 Wisconsin Ave, Bethesda, MD, 20889
Phone (301) 400-2201
Enumeration date Dec 20, 2006
Last updated in NPPES May 30, 2025

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License D0089752 (MD) Secondary
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
2086S0127X Trauma Surgery Physician Allopathic & Osteopathic Physicians · License D0089752 (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.

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Frequently asked questions

How do I verify John Maddox's NPI record?
Cross-check NPI 1528122256 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1528122256 active?
Yes, as of the latest NPPES snapshot, NPI 1528122256 is active (record last updated 2025-05-30).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-30.