2026 NPPES data Nurse Practitioner NPI 1578073292 MSN APRN FNP-BC
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KAREN ELLIS-BRISBON, MSN APRN FNP-BC

Nurse Practitioner in NEW CASTLE, Delaware. 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
257
Medicare Part D claims · 146 beneficiaries · Nurse Practitioner avg: 1K
What the federal data reveals: KAREN ELLIS-BRISBON, MSN APRN FNP-BC is a Nurse Practitioner ([object Object]) practicing in NEW CASTLE, Delaware with a Medicare Part D prescribing footprint of 257 claims across 146 beneficiaries .

What stands out: KAREN ELLIS-BRISBON, MSN APRN FNP-BC filed 257 Medicare Part D claims in 2023 across NEW CASTLE, Delaware. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

KAREN ELLIS-BRISBON, MSN APRN FNP-BC at a glance

Quality data not reported

NPI registry status

Active

Issued 10/08/2017

NPI 1578073292

Primary specialty

Nurse Practitioner

High-volume

87,227 US NPIs in this specialty

Medicare Part D claims

257 76% vs specialty avg

2023 prescription claims

Specialty avg: 1,084

Specialty distribution in Delaware

How Nurse Practitioner compares to other specialties among Delaware providers

Delaware providers

Nurse Practitioner share within Delaware

1. Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nurse Practitioner share within Delaware

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (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).

KAREN ELLIS-BRISBON, MSN APRN FNP-BC is a Nurse Practitioner provider practicing in NEW CASTLE, Delaware, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MSN APRN FNP-BC. NPI: 1578073292. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

KAREN ELLIS-BRISBON, MSN APRN FNP-BC appears in the CMS NPPES registry as a Nurse Practitioner provider holding MSN APRN FNP-BC credentials at 239 CHRISTIANA RD, NEW CASTLE, DE, 19720, with a listed phone of (302) 327-7630. NPI 1578073292 was issued on 10/08/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ELLIS-BRISBON 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 257 prescription claims written by this provider, covering 146 Medicare beneficiaries and totaling roughly $3K in drug spend. 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.

Nurse Practitioner is a high-volume specialty nationwide, with 87,227 enrolled providers across 56 states and an average of 1,084 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

239 CHRISTIANA RD
NEW CASTLE, DE 19720

Provider Details

NPI 1578073292
Specialty Nurse Practitioner
Credentials MSN APRN FNP-BC
Gender Female
NPI Issued 10/08/2017

Hospital and facility affiliations

Facilities where KAREN ELLIS-BRISBON, MSN APRN FNP-BC bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

CHRISTIANA CARE HEALTH SERVICES INC
NEW CASTLE, DE

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Medicare Part D Prescribing Data

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

257
Total Claims
$3K
Total Drug Cost
146
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
288
Total Day Supply
5,133
Generic Drug Cost
$2K
Antibiotic Claims
15

Patient Demographics

Average Patient Age
73.0 years
Avg HCC Risk Score
1.56
Gender Split
67% female / 33% male
Age Distribution
<65: 18, 65-74: 66, 75-84: 44, 85+: 18

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Lagevrio (Eua)
Molnupiravir
50
Paxlovid (Eua)
Nirmatrelvir/Ritonavir
44
Atorvastatin Calcium
14
Amlodipine Besylate
13
Fluticasone Propionate
13
Levetiracetam
12
Ramipril
12
Hydrochlorothiazide
11
Prednisone
11

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

Nurse Practitioner Overview

How KAREN ELLIS-BRISBON, MSN APRN FNP-BC fits within the Nurse Practitioner landscape nationally.

87,227
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider

KAREN ELLIS-BRISBON, MSN APRN FNP-BC's 257 claims are below the specialty average of 1,084.

Nearby Nurse Practitioner Providers in Delaware

Other clinicians with the same primary specialty enrolled in Delaware, drawn from the same CMS NPPES roster as ELLIS-BRISBON.

Compare Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is KAREN ELLIS-BRISBON, MSN APRN FNP-BC's specialty?
KAREN ELLIS-BRISBON, MSN APRN FNP-BC specializes in Nurse Practitioner and practices in NEW CASTLE, Delaware. Credentials: MSN APRN FNP-BC.
How much does KAREN ELLIS-BRISBON, MSN APRN FNP-BC prescribe under Medicare Part D?
In 2023, KAREN ELLIS-BRISBON, MSN APRN FNP-BC wrote 257 Medicare Part D claims totaling $3K in drug costs for 146 beneficiaries.
Where is KAREN ELLIS-BRISBON, MSN APRN FNP-BC located?
KAREN ELLIS-BRISBON, MSN APRN FNP-BC is located at 239 CHRISTIANA RD, NEW CASTLE, DE, 19720. Phone: (302) 327-7630.
What is KAREN ELLIS-BRISBON, MSN APRN FNP-BC's NPI number?
KAREN ELLIS-BRISBON, MSN APRN FNP-BC's National Provider Identifier (NPI) is 1578073292, issued on 10/08/2017.
How many Nurse Practitioner providers are there in the US?
There are 87,227 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
What drugs does KAREN ELLIS-BRISBON, MSN APRN FNP-BC prescribe most often?
Based on 2023 Medicare Part D data, KAREN ELLIS-BRISBON, MSN APRN FNP-BC's most frequently prescribed drugs include Lagevrio (Eua), Paxlovid (Eua), Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KAREN ELLIS-BRISBON, MSN APRN FNP-BC accept Medicare?
KAREN ELLIS-BRISBON, MSN APRN FNP-BC appears in CMS Medicare data with 257 Part D claims and 146 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KAREN ELLIS-BRISBON, MSN APRN FNP-BC's credentials?
KAREN ELLIS-BRISBON, MSN APRN FNP-BC's NPI is 1578073292 with credentials MSN APRN FNP-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