DR. WILLIAM E JOHNSTON JR. MD
NPI 1265456206
Family Medicine in Vicksburg, MS
About Dr. William E Johnston Jr. Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM E JOHNSTON JR. MD (NPI 1265456206) is an individual family medicine provider in Vicksburg, Mississippi, licensed in Mississippi (19317) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Baptist Medical Center-yazoo, and is a graduate of University Of Mississippi School Of Medicine (2006).
NPPES Registry Identity
Specialties & Licenses 2
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 E Johnston Jr. 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
5Medicare enrollment records show William Johnston reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Jackson, MS 39204
- Reassigned Medicare billing, Mississippi enrollment
- 187 clinicians in this Medicare group
Yazoo City, MS 39194
- Reassigned Medicare billing, Mississippi enrollment
- 50 clinicians in this Medicare group
Carthage, MS 39051
- Reassigned Medicare billing, Mississippi enrollment
- 50 clinicians in this Medicare group
Kosciusko, MS 39090
- Reassigned Medicare billing, Mississippi enrollment
- 46 clinicians in this Medicare group
Clarksdale, MS 38614
- Reassigned Medicare billing, Mississippi enrollment
- 170 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 4
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Baptist Medical Center-Yazoo
Critical Access Hospitals · Yazoo City, MSBaptist Medical Center Attala
Critical Access Hospitals · Kosciusko, MSPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 39180 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.
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.
VICKSBURG, MS 39180
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 Johnston's NPI number?
The NPI number for William Johnston is 1265456206. It was assigned to this individual provider in the NPPES registry on July 26, 2006.
Where is William Johnston located?
William Johnston practices at 1901 Mission 66, Vicksburg, MS 39180. The listed phone number is (601) 636-0097.
What is William Johnston's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is William Johnston enrolled in Medicare?
Yes. William Johnston 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 William Johnston's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Johnston reassigns Medicare benefits to 5 organizations: App Of Mississippi Ed, LLC (Jackson, MS), Yazoo Emergency Group, LLC (Yazoo City, MS), Leake Emergency Group, LLC (Carthage, MS), Attala Emergency Group LLC (Kosciusko, MS) and Comprehensive Hospitalists Of Ms, LLC (Clarksdale, MS). 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 William Johnston's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is William Johnston affiliated with any hospitals?
According to CMS data, William Johnston is affiliated with Baptist Medical Center-Yazoo and Baptist Medical Center Attala.
When was this NPI record last updated?
The NPPES record for William Johnston was last updated on December 6, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Dr. William E Johnston Jr., MD · NPI 1265456206
Family Medicine physician in Vicksburg, Mississippi. Individual provider, active in the CMS NPPES registry since July 26, 2006.
## Identity
- **NPI:** 1265456206 (Entity type: Individual)
- **Enumerated:** July 26, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 19317 (Mississippi)
- **Sole proprietor:** No
## Practice location
- **Address:** 1901 MISSION 66, Vicksburg, MS 39180-3711
- **Phone:** (601) 636-0097 · **Fax:** (601) 629-9969
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): App Of Mississippi Ed, LLC (NPI 1730687740, Jackson, MS); Yazoo Emergency Group, LLC (NPI 1447806914, Yazoo City, MS); Leake Emergency Group, LLC (NPI 1669028130, Carthage, MS); Attala Emergency Group LLC (NPI 1407103294, Kosciusko, MS); Comprehensive Hospitalists Of Ms, LLC (NPI 1710371679, Clarksdale, MS) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Mississippi School Of Medicine, class of 2006
## Record status
- **NPPES last updated:** December 6, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1265456206) · Data from the CMS NPPES public registry.