Marshall Walker, M.D.
NPI 1619295441 · Vascular & Interventional Radiology Physician · Mobile, AL
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1619295441
- Entity type
- Individual
- Primary specialty
- Vascular & Interventional Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- C3071 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,223 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 762 | $8 |
| Ct Scan Head Or Brain Without Contrast70450 | 209 | $38 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 98 | $82 |
| X-Ray of Abdomen, 1 View74018 | 97 | $8 |
| X-Ray of Chest, 2 Views71046 | 91 | $10 |
| Ct Scan of Chest Without Contrast71250 | 62 | $49 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 285 | 82 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 190 | 59 |
| Gabapentin | 146 | 61 |
| Oxycodone Hcl | 75 | 33 |
| Celecoxib | 73 | 37 |
| Diclofenac Sodium | 59 | 30 |
| Methocarbamol | 58 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$259 across 10 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 4250 Hospital DrMarianna, FL 32446-1917Phone: (850) 526-2200Fax: (850) 718-2844
Registry dates
- Enumerated
- 2010-05-04
- Last updated
- 2025-11-21
- Certified
- 2025-11-21
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.