John Blackwell, M.D.
NPI 1831170208 · Diagnostic Radiology Physician · Meridian, MS
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Blackwell, M.D. is a Diagnostic Radiology Physician provider in Meridian, MS (NPI 1831170208).
Provider details
- NPI number
- 1831170208
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- 18848 (MS)
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
20 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
1,251 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 | 333 | $8 |
| X-Ray of Chest, 2 Views71046 | 195 | $10 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 145 | $9 |
| X-Ray of Abdomen, 1 View74018 | 87 | $8 |
| X-Ray of Lower and Sacral Spine, 2-3 Views72100 | 35 | $10 |
| X-Ray of Chest, 2 Views71046 | 33 | $10 |
| Ct Scan of Chest Without Contrast |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-10
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Blackwell's NPI number?
- John Blackwell's National Provider Identifier (NPI) is 1831170208, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Blackwell's specialty?
- John Blackwell is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Blackwell located?
- John Blackwell's practice location on file with NPPES is 1203 24th Ave, Meridian, MS 39301-3926.
- What is John Blackwell's phone number?
- The practice phone number listed in the NPPES registry for John Blackwell is (601) 693-5862.
- Does John Blackwell accept Medicare?
- John Blackwell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Blackwell's NPI active?
- Yes — John Blackwell's NPI (1831170208) 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.