NPI registry status
Active
2026 NPPES data Radiological Physics Physician NPI 1508708280 MS
Verify on CMS → James Walker, MS
Radiological Physics Physician in Fayetteville, Arkansas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 127 in Radiological Physics Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
What the federal data shows
James Walker, MS is a Radiological Physics Physician in Fayetteville, Arkansas, listed in the federal CMS National Provider Identifier registry.
- #360
- Radiological Physics Physician rank among Arkansas specialties
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about James Walker, MS
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1508708280), first enumerated 04/09/2026.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1508708280 · Radiological Physics Physician
NPI-10 · ENUM-NEW · TAX-TRACE · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1508708280
- ENUM-NEW 2026
- TAX-TRACE 127
- RX-NONE No Part D
- BOOK-THIN 2 in Arkansas
- PHOTO-ENUM Matthew Nilsen, DABR · 2026
◑
Board-eligible specialty (heuristic, not verified)
James Walker, MS practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about James Walker, MS?
Quality data not reportedPrimary specialty
Radiological Physics Physician
Specialty distribution in Arkansas
How Radiological Physics Physician compares to other specialties among Arkansas providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Radiological Physics Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1508708280 |
|---|---|
| Specialty | Radiological Physics Physician |
| Credentials | MS |
| Gender | Male |
| NPI Issued | 04/09/2026 |
Radiological Physics Physician Overview
How James Walker, MS fits within the Radiological Physics Physician landscape nationally.
127
Radiological Physics Physician Providers in US
26
States with Radiological Physics Physician
14
Avg Claims per Provider
Nationwide Radiological Physics Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Walker, both outside Arkansas so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2026)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Radiological Physics Physician Providers in Arkansas
Other clinicians with the same primary specialty enrolled in Arkansas, drawn from the same CMS NPPES roster as Walker.
Compare Radiological Physics Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is James Walker, MS's specialty? ▼
James Walker, MS specializes in Radiological Physics Physician and practices in Fayetteville, Arkansas. Credentials: MS.
Where is James Walker, MS located? ▼
James Walker, MS is located at 2500 E MANOR DR, Fayetteville, AR, 72701. Phone: (854) 333-5525.
What is James Walker, MS's NPI number? ▼
James Walker, MS's National Provider Identifier (NPI) is 1508708280, issued on 04/09/2026.
How many Radiological Physics Physician providers are there in the US? ▼
There are 127 Radiological Physics Physician providers across 26 states in the US. The average Radiological Physics Physician provider writes 14 Medicare Part D claims per year.
Does James Walker, MS accept Medicare? ▼
James Walker, MS appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify James Walker, MS's credentials? ▼
James Walker, MS's NPI is 1508708280 with credentials MS. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.