2026 NPPES data Adult Health Nurse Practitioner NPI 1003223371 N.P.
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AMANDA MARR, N.P.

Adult Health Nurse Practitioner in MILLVILLE, 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
6K
Medicare Part D claims · 608 beneficiaries · Adult Health Nurse Practitioner avg: 1K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: AMANDA MARR, N.P. is a Adult Health Nurse Practitioner ([object Object]) practicing in MILLVILLE, Delaware with a Medicare Part D prescribing footprint of 6K claims across 608 beneficiaries — 9% brand-name prescribing .

What stands out: AMANDA MARR, N.P. filed 5,891 Medicare Part D claims in 2023 across MILLVILLE, Delaware. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

AMANDA MARR, N.P. at a glance

Quality data not reported

NPI registry status

Active

Issued 07/17/2014

NPI 1003223371

Primary specialty

Adult Health Nurse Practitioner

Mid-sized

29,492 US NPIs in this specialty

Medicare Part D claims

5,891 391% vs specialty avg

2023 prescription claims

Specialty avg: 1,201

Specialty distribution in Delaware

How Adult Health Nurse Practitioner compares to other specialties among Delaware providers

Delaware providers

Adult Health Nurse Practitioner share within Delaware

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

Specialty board-certification context

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

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

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

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

AMANDA MARR, N.P. is a Adult Health Nurse Practitioner provider practicing in MILLVILLE, Delaware, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: N.P.. NPI: 1003223371. 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.

AMANDA MARR, N.P. appears in the CMS NPPES registry as a Adult Health Nurse Practitioner provider holding N.P. credentials at 35141 ATLANTIC AVE, MILLVILLE, DE, 19967, with a listed phone of (302) 537-3740. NPI 1003223371 was issued on 07/17/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MARR 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 5,891 prescription claims written by this provider, covering 608 Medicare beneficiaries and totaling roughly $474K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 1.2%. 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.

Adult Health Nurse Practitioner is a mid-sized specialty nationwide, with 29,492 enrolled providers across 55 states and an average of 1,201 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

35141 ATLANTIC AVE
MILLVILLE, DE 19967

Provider Details

NPI 1003223371
Specialty Adult Health Nurse Practitioner
Credentials N.P.
Gender Female
NPI Issued 07/17/2014

Hospital and facility affiliations

Facilities where AMANDA MARR, N.P. 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.

FRIENDS AND FAMILY PRACTICE, PA
MILLVILLE, 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).

Brand vs generic prescribing mix · Generic-heavy

AMANDA MARR, N.P. — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 5,891 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.

5,891
Total Claims
$474K
Total Drug Cost
608
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
15,327
Total Day Supply
448,527
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$377K
Generic Drug Cost
$96K
Opioid Claims
68 (1.2% rate)
Antibiotic Claims
197

Patient Demographics

Average Patient Age
74.2 years
Avg HCC Risk Score
0.88
Gender Split
60% female / 40% male
Age Distribution
<65: 15, 65-74: 328, 75-84: 216, 85+: 49

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
518
Lisinopril
387
Levothyroxine Sodium
300
Losartan Potassium
265
Amlodipine Besylate
256
Rosuvastatin Calcium
246
Hydrochlorothiazide
173
Metformin Hcl
173
Metoprolol Succinate
147
Omeprazole
133

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

Adult Health Nurse Practitioner Overview

How AMANDA MARR, N.P. fits within the Adult Health Nurse Practitioner landscape nationally.

29,492
Adult Health Nurse Practitioner Providers in US
55
States with Adult Health Nurse Practitioner
1,201
Avg Claims per Provider

AMANDA MARR, N.P.'s 5,891 claims are above the specialty average of 1,201.

Nearby Adult Health Nurse Practitioner Providers in Delaware

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

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

Frequently Asked Questions

What is AMANDA MARR, N.P.'s specialty?
AMANDA MARR, N.P. specializes in Adult Health Nurse Practitioner and practices in MILLVILLE, Delaware. Credentials: N.P..
How much does AMANDA MARR, N.P. prescribe under Medicare Part D?
In 2023, AMANDA MARR, N.P. wrote 5,891 Medicare Part D claims totaling $474K in drug costs for 608 beneficiaries.
Where is AMANDA MARR, N.P. located?
AMANDA MARR, N.P. is located at 35141 ATLANTIC AVE, MILLVILLE, DE, 19967. Phone: (302) 537-3740.
What is AMANDA MARR, N.P.'s NPI number?
AMANDA MARR, N.P.'s National Provider Identifier (NPI) is 1003223371, issued on 07/17/2014.
Does AMANDA MARR, N.P. prescribe more brand-name or generic drugs?
AMANDA MARR, N.P.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $377K in brand drug costs.
Does AMANDA MARR, N.P. prescribe opioids?
Yes, AMANDA MARR, N.P. had 68 opioid claims in 2023 with an opioid prescribing rate of 1.2%.
How many Adult Health Nurse Practitioner providers are there in the US?
There are 29,492 Adult Health Nurse Practitioner providers across 55 states in the US. The average Adult Health Nurse Practitioner provider writes 1,201 Medicare Part D claims per year.
What drugs does AMANDA MARR, N.P. prescribe most often?
Based on 2023 Medicare Part D data, AMANDA MARR, N.P.'s most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AMANDA MARR, N.P. accept Medicare?
AMANDA MARR, N.P. appears in CMS Medicare data with 5,891 Part D claims and 608 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AMANDA MARR, N.P.'s credentials?
AMANDA MARR, N.P.'s NPI is 1003223371 with credentials N.P.. 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