Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. John Specht Maddox, MD

Individual provider Surgery Physician · NPI 1528122256

Dr. John Specht Maddox, MD is a General Surgery in Bethesda, Maryland. Graduated from Uniformed Services Uhs Fe Hebert School of Med in 2006, 20 years ago. Practices with Medical Practices of Antietam, LLC, a 231-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
20
Trained at
Uniformed Services Uhs Fe Hebert School of Med
Licensed in
MD
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Partly verified

Some contact details are missing from the federal record.

Walter Reed National Military Ctr 8901 Wisconsin Ave
Bethesda, MD 20889-0001
Phone: (301) 400-2201
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 11116 Medical Campus Rd, Hagerstown, MD 21742-6710 — (301) 790-8000

Specialties & licences

Trauma Surgery Physician (primary) Taxonomy 2086S0127X · Licence D0089752 (MD)
Surgery Physician Taxonomy 208600000X · Licence D0089752 (MD)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1528122256
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 20, 2006
Last updated in NPPESMay 30, 2025
Certification dateMay 30, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGENERAL SURGERY
Medical schoolUNIFORMED SERVICES UHS FE HEBERT SCHOOL OF MED
Graduated 2006 (20 years in practice)
Group practice Medical Practices Of Antietam, Llc — 231 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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