NPPES file of Aug 9, 2026

Jennifer Ethel Sizemore, MSN, RN, PMHNP-BC

Psychiatric/Mental Health Nurse Practitioner · Marianna, FL

Jennifer Ethel Sizemore, MSN, RN, PMHNP-BC is a psychiatric/mental health nurse practitioner with a practice address in Marianna, Florida, and NPI 1255965919, issued on Mar 2, 2020. Check the license (Florida APRN11008217, as entered in NPPES) on the Florida health license search; 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
1255965919
Name
Jennifer Ethel Sizemore
Credential
MSN, RN, PMHNP-BC
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
APRN11008217 FL
Self-reported in NPPES; status is on the state search
Practice location
4469 Clinton St Ste B, Marianna, FL 32446
Phone
(850) 693-4171
Enumerated
Mar 2, 2020
Record last updated
Oct 15, 2025
Fax
(850) 303-6006
Medicare enrollment
Enrolled (PECOS I20200724000411); accepts Medicare assignment
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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8 nearest psychiatric/mental health nurse practitioner records → All 4,715 in Florida → Look up another NPI →

Verify Jennifer Ethel Sizemore in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersFlorida health license search
    Search for license APRN11008217    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
Open the Florida license search

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27% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024

664 Medicare Part D claims for 80 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.

  1. Jennifer Sizemore664
  2. Specialty average906

Most prescribed

  1. Duloxetine Hcl49 claims
  2. Quetiapine Fumarate39 claims
  3. Oxcarbazepine33 claims
  4. Fluoxetine Hcl31 claims
  5. Benztropine Mesylate28 claims
  6. Hydroxyzine Pamoate23 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: $2,337.44

120 payments; by number, the most common kind was food and beverage; the largest payer was Vanda Pharmaceuticals 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. Jennifer Sizemore$2,337.44
  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.

Jennifer Ethel Sizemore among 4,715 psychiatric/mental health nurse practitioner records in Florida

Jennifer Ethel Sizemore, MSN, RN, PMHNP-BC is one of 4,715 psychiatric/mental health nurse practitioner records with a practice address in Florida. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 38% of them.

  • NPI issued2020 · 38% of these records are older, 56% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated2020 · median 2021 among the 2,622 with a school on file
  • Record last updated2025 · 15% 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 Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

5 psychiatric/mental health nurse practitioner records list a practice address in Marianna

They are 5 of the 353 NPPES records with a practice address in Marianna, and 4,715 psychiatric/mental health nurse practitioner records in Florida.

All 4,715 in Florida → Every provider in Marianna → Psychiatric/Mental Health Nurse Practitioner nationwide →

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

  1. Margaret Andem, ARNP, LCSWMarianna, FL 324461679670533
  2. Shanna Kent, PMHNP-BCMarianna, FL 324461730692930
  3. Melissa Sims, RNMarianna, FL 324461063093060
  4. Judith Hussey, ARNP, BCMarianna, FL 324481760630156
  5. Leslie KimzeyFreeport, FL 324391174466825
  6. Kathryn Land, ARNPPort St Joe, FL 324561518102029
  7. Kasey Sheridan, APRNPort Saint Joe, FL 324561972925550
  8. Lisa Trautman, APRN PMHNP-BC, FNP-CPort St Joe, FL 324561861987604

Common questions

What is Jennifer Ethel Sizemore, MSN, RN, PMHNP-BC's NPI number?

Jennifer Ethel Sizemore, MSN, RN, PMHNP-BC's National Provider Identifier (NPI) is 1255965919, issued on Mar 2, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Jennifer Ethel Sizemore, MSN, RN, PMHNP-BC located?

The NPPES record lists a practice address at 4469 Clinton St Ste B, Marianna, FL, 32446. Phone: (850) 693-4171. Providers update this record themselves, so call before visiting.

How can I verify Jennifer Ethel Sizemore, MSN, RN, PMHNP-BC's license?

NPPES lists Florida license number APRN11008217, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Jennifer Ethel Sizemore, MSN, RN, PMHNP-BC prescribe under Medicare Part D?

In 2024, Jennifer Ethel Sizemore, MSN, RN, PMHNP-BC had 664 Medicare Part D claims for 80 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.