2026 NPPES data Psychiatric/Mental Health Nurse Practitioner NPI 1255965919 MSN, RN, PMHNP-BC
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JENNIFER SIZEMORE, MSN, RN, PMHNP-BC

Psychiatric/Mental Health Nurse Practitioner in MARIANNA, Florida. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
4K
Medicare Part D claims · 520 beneficiaries · Psychiatric/Mental Health Nurse Practitioner avg: 927
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$2.3K
120 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

JENNIFER SIZEMORE, MSN, RN, PMHNP-BC filed 3,851 Medicare Part D claims in 2023 as a Psychiatric/Mental Health Nurse Practitioner in MARIANNA, Florida, prescribing 90% generic.

4K
Part D claims, 2023
90%
generic prescribing
$2.3K
industry payments (Sunshine Act)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

JENNIFER SIZEMORE, MSN, RN, PMHNP-BC's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

3,851 Top 9% higher than 91% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about JENNIFER SIZEMORE, MSN, RN, PMHNP-BC?

Quality data not reported

NPI registry status

Active

Issued 03/02/2020

NPI 1255965919

Primary specialty

Psychiatric/Mental Health Nurse Practitioner

Mid-sized

39,953 US NPIs in this specialty

Medicare Part D claims

3,851 315% vs specialty avg

2023 prescription claims

Specialty avg: 927

Specialty distribution in Florida

How Psychiatric/Mental Health Nurse Practitioner compares to other specialties among Florida providers

Florida providers

Psychiatric/Mental Health Nurse Practitioner share within Florida

1. Psychiatric/Mental Health Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Psychiatric/Mental Health Nurse Practitioner share within Florida

Specialty board-certification context

Estimated specialty board-certified rate — Psychiatric/Mental Health Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Psychiatric/Mental Health Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Psychiatric/Mental Health Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Psychiatric/Mental Health Nurse Practitioner) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

JENNIFER SIZEMORE, MSN, RN, PMHNP-BC appears in the CMS NPPES registry as a Psychiatric/Mental Health Nurse Practitioner provider holding MSN, RN, PMHNP-BC credentials at 4469 CLINTON ST STE B, MARIANNA, FL, 32446, with a listed phone of (850) 693-4171. NPI 1255965919 was issued on 03/02/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SIZEMORE most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 3,851 prescription claims written by this provider, covering 520 Medicare beneficiaries and totaling roughly $750K in drug spend, split 10% brand-name and 90% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Psychiatric/Mental Health Nurse Practitioner is a mid-sized specialty nationwide, with 39,953 enrolled providers across 54 states and an average of 927 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

4469 CLINTON ST STE B
MARIANNA, FL 32446

Provider Details

NPI 1255965919
Specialty Psychiatric/Mental Health Nurse Practitioner
Credentials MSN, RN, PMHNP-BC
Gender Female
NPI Issued 03/02/2020

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for JENNIFER SIZEMORE, MSN, RN, PMHNP-BC. Source: openpaymentsdata.cms.gov.

Total received

$2.3K

Largest payer

Vanda Pharmaceuticals Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

License & disciplinary context — Florida FLDOH 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~75K Florida medical licensees in 2023 — they are NOT specific to JENNIFER SIZEMORE, MSN, RN, PMHNP-BC. To verify JENNIFER SIZEMORE, MSN, RN, PMHNP-BC's current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

480
Total board actions, Florida 2023
Across 467 cases
6.40
Actions per 1,000 licensees
Florida statewide rate
monetary fine
Most common action type
138 cases

FLDOH publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

JENNIFER SIZEMORE, MSN, RN, PMHNP-BC — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 3,851 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

3,851
Total Claims
$750K
Total Drug Cost
520
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,810
Total Day Supply
142,860
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$665K
Generic Drug Cost
$85K

Patient Demographics

Average Patient Age
61.2 years
Avg HCC Risk Score
1.51
Gender Split
68% female / 33% male
Age Distribution
<65: 289, 65-74: 178, 75-84: 41, 85+: 12

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What JENNIFER SIZEMORE, MSN, RN, PMHNP-BC prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Alprazolam
303
Venlafaxine Hcl Er
Venlafaxine Hcl
250
Clonazepam
219
Mirtazapine
200
Risperidone
128
Buspirone Hcl
127
Quetiapine Fumarate
122
Lorazepam
118
Trazodone Hcl
110
Aripiprazole
109

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Psychiatric/Mental Health Nurse Practitioner Overview

How JENNIFER SIZEMORE, MSN, RN, PMHNP-BC fits within the Psychiatric/Mental Health Nurse Practitioner landscape nationally.

39,953
Psychiatric/Mental Health Nurse Practitioner Providers in US
54
States with Psychiatric/Mental Health Nurse Practitioner
927
Avg Claims per Provider

JENNIFER SIZEMORE, MSN, RN, PMHNP-BC's 3,851 claims are above the specialty average of 927.

Nearby Psychiatric/Mental Health Nurse Practitioner Providers in Florida

Other clinicians with the same primary specialty enrolled in Florida, drawn from the same CMS NPPES roster as SIZEMORE.

Compare Psychiatric/Mental Health Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is JENNIFER SIZEMORE, MSN, RN, PMHNP-BC's specialty?
JENNIFER SIZEMORE, MSN, RN, PMHNP-BC specializes in Psychiatric/Mental Health Nurse Practitioner and practices in MARIANNA, Florida. Credentials: MSN, RN, PMHNP-BC.
How much does JENNIFER SIZEMORE, MSN, RN, PMHNP-BC prescribe under Medicare Part D?
In 2023, JENNIFER SIZEMORE, MSN, RN, PMHNP-BC wrote 3,851 Medicare Part D claims totaling $750K in drug costs for 520 beneficiaries.
Where is JENNIFER SIZEMORE, MSN, RN, PMHNP-BC located?
JENNIFER SIZEMORE, MSN, RN, PMHNP-BC is located at 4469 CLINTON ST STE B, MARIANNA, FL, 32446. Phone: (850) 693-4171.
What is JENNIFER SIZEMORE, MSN, RN, PMHNP-BC's NPI number?
JENNIFER SIZEMORE, MSN, RN, PMHNP-BC's National Provider Identifier (NPI) is 1255965919, issued on 03/02/2020.
Does JENNIFER SIZEMORE, MSN, RN, PMHNP-BC prescribe more brand-name or generic drugs?
JENNIFER SIZEMORE, MSN, RN, PMHNP-BC's prescribing is 10% brand-name and 90% generic drugs by claim count, with $665K in brand drug costs.
How many Psychiatric/Mental Health Nurse Practitioner providers are there in the US?
There are 39,953 Psychiatric/Mental Health Nurse Practitioner providers across 54 states in the US. The average Psychiatric/Mental Health Nurse Practitioner provider writes 927 Medicare Part D claims per year.
What drugs does JENNIFER SIZEMORE, MSN, RN, PMHNP-BC prescribe most often?
Based on 2023 Medicare Part D data, JENNIFER SIZEMORE, MSN, RN, PMHNP-BC's most frequently prescribed drugs include Alprazolam, Venlafaxine Hcl Er, Clonazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JENNIFER SIZEMORE, MSN, RN, PMHNP-BC accept Medicare?
JENNIFER SIZEMORE, MSN, RN, PMHNP-BC appears in CMS Medicare data with 3,851 Part D claims and 520 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JENNIFER SIZEMORE, MSN, RN, PMHNP-BC's credentials?
JENNIFER SIZEMORE, MSN, RN, PMHNP-BC's NPI is 1255965919 with credentials MSN, RN, PMHNP-BC. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology