William E. Johnston, MD
Family Medicine Physician · Vicksburg, MS
William E. Johnston, MD is a family medicine physician with a practice address in Vicksburg, Mississippi, and NPI 1265456206, issued on Jul 26, 2006. Check the license (Mississippi 19317, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- William E. Johnston
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 19317 MS
Self-reported in NPPES; status is on the state search - Practice location
- 1901 Mission 66, Vicksburg, MS 39180
- Phone
- (601) 636-0097
- Enumerated
- Jul 26, 2006
- Record last updated
- Dec 6, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (601) 629-9969
- Medicare enrollment
- Enrolled (PECOS I20060914000368); accepts Medicare assignment
- Medical or professional school
- University Of Mississippi School Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,165 in Mississippi → Look up another NPI →
Also registered at 1901 Mission 66
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Karla Ashley, OTOccupational Therapist1700968302
- Tiffany Banyard, SLPSpeech-Language Pathologist1477601730
- John Barnes, MDFamily Medicine Physician1205865680
- Robert Cannon, M.D.Family Medicine Physician1215373139
- Susan Chiarito, MDFamily Medicine Physician1871534008
- Mikki Daniel, PTPhysical Therapist1376625988
Verify William E. Johnston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license 19317Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average family medicine physician in 2024
684 Medicare Part D claims for 411 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 39 claims were for opioids.
Most prescribed
- Prednisone86 claims
- Pantoprazole Sodium33 claims
- Nabumetone32 claims
- Ondansetron Odt30 claims
- Amoxicillin-Clavulanate Potass29 claims
- Hydrocodone-Acetaminophen26 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Attala Emergency Group LLCKosciusko, MS
- Yazoo Emergency Group, LLCYazoo City, MS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William E. Johnston among 1,165 family medicine physician records in Mississippi
William E. Johnston, MD is one of 1,165 family medicine physician records with a practice address in Mississippi. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 48% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2006 · median 2003 among the 748 with a school on file
- Record last updated2019 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 family medicine physician records list a practice address in Vicksburg
They are 19 of the 708 NPPES records with a practice address in Vicksburg, and 1,165 family medicine physician records in Mississippi.
All 1,165 in Mississippi → Every provider in Vicksburg → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- George Abraham, MDVicksburg, MS 391801184669798
- John Barnes, MDVicksburg, MS 391801205865680
- Robert Cannon, M.D.Vicksburg, MS 391801215373139
- Susan Chiarito, MDVicksburg, MS 391801871534008
- Jonathan Flowers, D.O.Vicksburg, MS 391801649659731
- John Ford, MSVicksburg, MS 391801356363915
- Robert Giffin, MDVicksburg, MS 391801376584052
- Breanna Heard-PinhoVicksburg, MS 391801265068290
Common questions
What is William E. Johnston, MD's NPI number?
William E. Johnston, MD's National Provider Identifier (NPI) is 1265456206, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William E. Johnston, MD located?
The NPPES record lists a practice address at 1901 Mission 66, Vicksburg, MS, 39180. Phone: (601) 636-0097. Providers update this record themselves, so call before visiting.
How can I verify William E. Johnston, MD's license?
NPPES lists Mississippi license number 19317, as entered by the provider. Search the Mississippi State Board of Medical Licensure at https://www.msbml.ms.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William E. Johnston, MD prescribe under Medicare Part D?
In 2024, William E. Johnston, MD had 684 Medicare Part D claims for 411 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is William E. Johnston, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.