NPI registry status
Active
2026 NPPES data Adult Health Nurse Practitioner NPI 1003223371 N.P.
Verify on CMS → Amanda Marr, N.P.
Adult Health Nurse Practitioner in Millville, Delaware.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 29,492 in Adult Health Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
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
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Amanda Marr, N.P. filed 5,891 Medicare Part D claims in 2023 as a Adult Health Nurse Practitioner in Millville, Delaware, prescribing 91% generic.
- 6K
- Part D claims, 2023
- 91%
- generic prescribing
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.
Amanda Marr, N.P.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
5,891 Top 5% higher than 95% of 1,370,886 prescribers
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 Amanda Marr, N.P.?
Quality data not reportedPrimary specialty
Adult Health Nurse Practitioner
Medicare Part D claims
5,891 391% vs specialty avg
Specialty distribution in Delaware
How Adult Health Nurse Practitioner compares to other specialties among Delaware providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Adult Health Nurse Practitioner. Verify directly:
How MIPS and board certification work
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. 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.
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%.
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
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%
Adult Health Nurse Practitioner average
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.
What Amanda Marr, N.P. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
518 claims
- Lisinopril
Lisinopril
387 claims
- Levothyroxine Sodium
Levothyroxine Sodium
300 claims
- Losartan Potassium
Losartan Potassium
265 claims
- Amlodipine Besylate
Amlodipine Besylate
256 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
246 claims
- Hydrochlorothiazide 173
Hydrochlorothiazide
173 claims
- Metformin Hcl 173
Metformin Hcl
173 claims
| 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.
Dr. Mary Ellen Abendroth
CRNP
Lewes, DE
Dr. Mayumi Anthony-Gubitosi
ANP
Newark, DE
Dr. Lydia Anyanga
NP
New Castle, DE
Dr. Jill Ballenger
ANP-BC
Wilmington, DE
Dr. Isabel Benson
NP-C
Lewes, DE
Compare Adult Health Nurse Practitioner nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Delaware medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Adult Health Nurse Practitioner peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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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
View source datasets and methodology notes
- 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
Compiled from official public sources by the PlainDoctor editorial team.