John Madewell, M.D.
NPI 1922106111 · Diagnostic Radiology Physician · Houston, TX
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Madewell, M.D. is a Diagnostic Radiology Physician provider in Houston, TX (NPI 1922106111).
Provider details
- NPI number
- 1922106111
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G4165 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,670 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 587 | $8 |
| Mri Scan of Lower Spinal Canal Before and After Contrast72158 | 193 | $103 |
| Mri Scan of Middle Spinal Canal Before and After Contrast72157 | 180 | $103 |
| Mri Scan of Upper Spinal Canal Before and After Contrast72156 | 162 | $108 |
| Nuclear Medicine Study Whole Body With Ct Scan78816 | 78 | $110 |
| X-Ray of Thigh Bone, Minimum 2 Views73552 | 52 | $9 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Madewell's NPI number?
- John Madewell's National Provider Identifier (NPI) is 1922106111, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Madewell's specialty?
- John Madewell is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Madewell located?
- John Madewell's practice location on file with NPPES is 1515 Holcombe Blvd, Houston, TX 77030-4009.
- What is John Madewell's phone number?
- The practice phone number listed in the NPPES registry for John Madewell is (713) 792-6161.
- Does John Madewell accept Medicare?
- John Madewell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Madewell's NPI active?
- Yes — John Madewell's NPI (1922106111) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.