JOHN M ARTHUR MD
NPI 1003924952
Internal Medicine - Nephrology in Little Rock, AR
About John M Arthur Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN M ARTHUR MD (NPI 1003924952) is an individual nephrology provider in Little Rock, Arkansas, licensed in Arkansas (E-9280) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Iowa, Rj & L Carver College Of Medicine (1990).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
John M Arthur Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show John Arthur reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Little Rock, AR 72205
- Reassigned Medicare billing, Arkansas enrollment
- Also billed through NPI 1043372220 (Arkansas)
- 1,246 clinicians in this Medicare group
Little Rock, AR 72202
- Reassigned Medicare billing, Arkansas enrollment
- 944 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 72205 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Arthur's NPI number?
The NPI number for John Arthur is 1003924952. It was assigned to this individual provider in the NPPES registry on August 29, 2006.
Where is John Arthur located?
John Arthur practices at 4301 W Markham St # 783, Little Rock, AR 72205. The listed phone number is (501) 686-8000.
What is John Arthur's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is John Arthur enrolled in Medicare?
Yes. John Arthur is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for John Arthur's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Arthur reassigns Medicare benefits to 2 organizations: University Of Arkansas For Medical Sciences (Little Rock, AR) and Arkansas Childrens Hospital (Little Rock, AR). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Arthur's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Arthur accept?
Health plans from Health Advantage and Octave list John Arthur as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for John Arthur was last updated on September 14, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# John M Arthur, MD · NPI 1003924952
Nephrology physician in Little Rock, Arkansas. Individual provider, active in the CMS NPPES registry since August 29, 2006.
## Identity
- **NPI:** 1003924952 (Entity type: Individual)
- **Enumerated:** August 29, 2006
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** E-9280 (Arkansas)
- **Sole proprietor:** No
## Practice location
- **Address:** 4301 W MARKHAM ST # 783, Little Rock, AR 72205-7101
- **Phone:** (501) 686-8000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): University Of Arkansas For Medical Sciences (NPI 1326341488, Little Rock, AR); Arkansas Childrens Hospital (NPI 1598773079, Little Rock, AR) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Iowa, Rj & L Carver College Of Medicine, class of 1990
## Record status
- **NPPES last updated:** September 14, 2016
- **Other identifiers:** Medicare PIN 433309YJJG (AR); Medicaid 211167001 (AR)
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Source: [NPI Profile](https://npiprofile.com/npi/1003924952) · Data from the CMS NPPES public registry.