NPPES file of Aug 9, 2026

William Dwight Johnson, CFPMHNP

Psychiatric/Mental Health Nurse Practitioner · Brandon, MS

William Dwight Johnson, CFPMHNP is a psychiatric/mental health nurse practitioner with a practice address in Brandon, Mississippi, and NPI 1669586996, issued on Aug 17, 2006. Check the license (Mississippi R857199, as entered in NPPES) with the Mississippi board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1669586996
Name
William Dwight Johnson
Credential
CFPMHNP
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
R857199 MS
Self-reported in NPPES; status is on the state search
Practice location
613 Marquette Drive, Brandon, MS 39042
Phone
(601) 824-0342
Enumerated
Aug 17, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(601) 824-0349
Medicaid ID
01880504 MS
Medicare enrollment
Enrolled (PECOS I20050411000343); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify William Dwight Johnson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Mississippi board licenses this profession
    Search for license R857199
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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12% more Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024

1,018 Medicare Part D claims for 106 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.

  1. William Johnson1,018
  2. Specialty average906

Most prescribed

  1. Bupropion Xl69 claims
  2. Aripiprazole67 claims
  3. Mirtazapine62 claims
  4. Trazodone Hcl57 claims
  5. Alprazolam55 claims
  6. Buspirone Hcl55 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.

Industry payments in 2024: $1,406.02

72 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Johnson$1,406.02
  2. Specialty average$1,027.77

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Madison Rankin Simpson Mental HealthBrandon, MS
  2. Precise Clinical Neuroscience SpecialistsFlowood, MS

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

William Dwight Johnson among 624 psychiatric/mental health nurse practitioner records in Mississippi

William Dwight Johnson, CFPMHNP is one of 624 psychiatric/mental health nurse practitioner records with a practice address in Mississippi. 74% 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 under 1% of them.

  • NPI issued2006 · under 1% of these records are older, 94% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2003 · median 2020 among the 366 with a school on file
  • Record last updated2007 · 30% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

28 psychiatric/mental health nurse practitioner records list a practice address in Brandon

They are 28 of the 752 NPPES records with a practice address in Brandon, and 624 psychiatric/mental health nurse practitioner records in Mississippi.

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Brandy Byrd, PMHNP-BCBrandon, MS 390421013491992
  2. Elizabeth Case, PMHNPBrandon, MS 390421538059761
  3. Mitzi Floyd, PMHNP-BCBrandon, MS 390421356713903
  4. Mary GardnerBrandon, MS 390421437795606
  5. Koscher Jackson, NPBrandon, MS 390421417350182
  6. Sarah Leath, FPMHNPBrandon, MS 390421821033382
  7. Marie McFarland, PMHNP-BCBrandon, MS 390421356077150
  8. Summer Miller, PMHNP-BCBrandon, MS 390421831829167

Common questions

What is William Dwight Johnson, CFPMHNP's NPI number?

William Dwight Johnson, CFPMHNP's National Provider Identifier (NPI) is 1669586996, issued on Aug 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Dwight Johnson, CFPMHNP located?

The NPPES record lists a practice address at 613 Marquette Drive, Brandon, MS, 39042. Phone: (601) 824-0342. Providers update this record themselves, so call before visiting.

How can I verify William Dwight Johnson, CFPMHNP's license?

NPPES lists Mississippi license number R857199, as entered by the provider. Search the Mississippi board that licenses this profession; the NPPES record confirms identity only.

How much does William Dwight Johnson, CFPMHNP prescribe under Medicare Part D?

In 2024, William Dwight Johnson, CFPMHNP had 1,018 Medicare Part D claims for 106 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions only.

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.