DR. WILLIAM THOMAS PRATER MD
NPI 1386388007
Internal Medicine in Memphis, TN
About Dr. William Thomas Prater Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM THOMAS PRATER MD (NPI 1386388007) is an individual internal medicine provider in Memphis, Tennessee, licensed in Tennessee (72558) and active in the NPI registry since April 2022. He is enrolled in Medicare PECOS, is affiliated with Baptist Memorial Hospital, and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
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
Dr. William Thomas Prater 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 Reassignment
Medicare enrollment records show William Prater reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Oak Ridge, TN 37830
- Reassigned Medicare billing, Tennessee enrollment
- 1,085 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Baptist Memorial Hospital
Acute Care Hospitals · Memphis, TNBaptist Memorial Hospital Tipton
Acute Care Hospitals · Covington, TNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 38120 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.
MEMPHIS, TN 38120
MEMPHIS, TN 38120
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 William Prater's NPI number?
The NPI number for William Prater is 1386388007. It was assigned to this individual provider in the NPPES registry on April 27, 2022.
Where is William Prater located?
William Prater practices at 6019 Walnut Grove Rd, Memphis, TN 38120. The listed phone number is (901) 226-5000.
What is William Prater's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is William Prater enrolled in Medicare?
Yes. William Prater 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 organization bills Medicare for William Prater's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Prater reassigns Medicare benefits to Southeastern Physician Services PC (Oak Ridge, TN). The 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 William Prater's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Prater accept?
Health plans from Oscar Health Plan, Inc. and Oscar Insurance Company list William Prater 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 William Prater affiliated with any hospitals?
According to CMS data, William Prater is affiliated with Baptist Memorial Hospital and Baptist Memorial Hospital Tipton.
When was this NPI record last updated?
The NPPES record for William Prater was last updated on July 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.