John Maddox, MD
NPI 1528122256 · Trauma Surgery Physician · Bethesda, MD
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Maddox, MD is a Trauma Surgery Physician provider in Bethesda, MD (NPI 1528122256).
Provider details
- NPI number
- 1528122256
- Entity type
- Individual
- Primary specialty
- Trauma Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D0089752 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 11116 Medical Campus RdHagerstown, MD 21742-6710Phone: (301) 790-8000
Registry dates
- Enumerated
- 2006-12-20
- Last updated
- 2025-05-30
- Certified
- 2025-05-30
Frequently asked questions
- What is John Maddox's NPI number?
- John Maddox's National Provider Identifier (NPI) is 1528122256, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Maddox's specialty?
- John Maddox is listed in the NPPES registry with a primary specialty of Trauma Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is John Maddox located?
- John Maddox's practice location on file with NPPES is Walter Reed National Military Ctr, Bethesda, MD 20889-0001.
- What is John Maddox's phone number?
- The practice phone number listed in the NPPES registry for John Maddox is (301) 400-2201.
- Does John Maddox accept Medicare?
- John Maddox is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Maddox's NPI active?
- Yes — John Maddox's NPI (1528122256) is active in the NPPES registry as of the last update on 2025-05-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.