MR. JAMES BARTON WILLIAMS MD
NPI 1780657056
Internal Medicine - Cardiovascular Disease in Columbus, MS
About Mr. James Barton Williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. JAMES BARTON WILLIAMS MD (NPI 1780657056) is an individual cardiovascular disease provider in Columbus, Mississippi, licensed in Mississippi (14872) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with North Mississippi Medical Center, and maintains 5 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 5
Other Identifiers 1
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
Mr. James Barton Williams 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
3Medicare enrollment records show James Williams reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Columbus, MS 39705
- Reassigned Medicare billing, Mississippi enrollment
- 45 clinicians in this Medicare group
Columbus, MS 39705
- Reassigned Medicare billing, Mississippi enrollment
- Medicare enrollment name: J. Barton Williams, M.D., P.A.
Memphis, TN 38125
- Reassigned Medicare billing, Mississippi enrollment
- 494 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 37
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.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
North Mississippi Medical Center
Acute Care Hospitals · Tupelo, MSOch Regional Medical Center
Acute Care Hospitals · Starkville, MSBmh-Golden Triangle
Acute Care Hospitals · Columbus, MSNoxubee General Critical Access Hosp
Critical Access Hospitals · Macon, MSPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 39705 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 James Williams's NPI number?
The NPI number for James Williams is 1780657056. It was assigned to this individual provider in the NPPES registry on February 8, 2006. The provider is also known as J. Barton Williams MD.
Where is James Williams located?
James Williams practices at 520 Willowbrook Rd, Columbus, MS 39705. The listed phone number is (662) 240-1412.
What is James Williams's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is James Williams enrolled in Medicare?
Yes. James Williams 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 James Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Williams reassigns Medicare benefits to 3 organizations: Baptist Memorial Hospital - Golden Triangle Inc. (Columbus, MS), J. Barton Williams MD PA (Columbus, MS) and Baptist Memorial Medical Group Inc (Memphis, TN). 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 James Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does James Williams accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee and 5 other insurers list James Williams 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.
Is James Williams affiliated with any hospitals?
According to CMS data, James Williams is affiliated with North Mississippi Medical Center, Och Regional Medical Center, Bmh-Golden Triangle and Noxubee General Critical Access Hosp.
When was this NPI record last updated?
The NPPES record for James Williams was last updated on February 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.