NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1801382825 FNP
Verify on CMS → Marissa Lowrie, FNP
Family Nurse Practitioner in Darien, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 210,832 in Family 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
496
Medicare Part D claims · 182 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
71%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.6/100
▼ 10 pts below national avg 83.1 · Mid-tier
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Marissa Lowrie, FNP reported a CMS MIPS final score of 73.6/100 - below the 83.1 national average - and filed 496 Medicare Part D claims in 2023.
- 73.6/100
- MIPS score · -10 vs avg
- 496
- Part D claims, 2023
- 71%
- 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.
Marissa Lowrie, FNP's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
74 11th percentile higher than 11% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Marissa Lowrie, FNP sits
This provider among family nurse practitioner peers
Across the 27,154 family nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Marissa Lowrie, FNP writes more Part D claims than 54% of them and scores higher on MIPS quality than 11% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one family nurse practitioner peer from a representative sample of 60; the gold marker is Marissa Lowrie, FNP. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Marissa Lowrie, FNP?
Below national averagePrimary specialty
Family Nurse Practitioner
Medicare Part D claims
496 59% vs specialty avg
MIPS final score
73.6/100 9.5 pts vs avg
Specialty distribution in Connecticut
How Family Nurse Practitioner compares to other specialties among Connecticut providers
Medicare quality performance, MIPS
Marissa Lowrie, FNP's 2023 MIPS final score plotted against the Family Nurse Practitioner national average
- MIPS Final Score
- 73.6/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Family Nurse Practitioner) - 73.6/100 vs national avg 83.1
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).
Marissa Lowrie, FNP appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding FNP credentials at 104 HEIGHTS RD, Darien, CT, 06820, with a listed phone of (888) 663-6331. NPI 1801382825 was issued on 07/02/2018.
Medicare Part D records for calendar year 2023 show 496 prescription claims written by this provider, covering 182 Medicare beneficiaries and totaling roughly $112K in drug spend, split 25% brand-name and 71% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.6/100 for the 2023 performance year (Quality 75.8, Cost 51.4), compared with the national average of 83.1.
Family Nurse Practitioner is a high-volume specialty nationwide, with 210,832 enrolled providers across 56 states and an average of 1,222 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 | 1801382825 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | FNP |
| Gender | Female |
| NPI Issued | 07/02/2018 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.5637
Final Score
Avg: 83.1
75.8435
Quality
51.4318
Cost
74
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Marissa Lowrie, FNP 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.
Hhc One Medical, LLC
Darien, CT
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 · Above average
Marissa Lowrie, FNP - brand share 25.0%
Family Nurse Practitioner average
25% brand-name claims vs 71% generic, on 496 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.
496
Total Claims
$112K
Total Drug Cost
182
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 770
- Total Day Supply
- 20,089
- Brand vs Generic
- 25% brand / 71% generic
- Brand Drug Cost
- $105K
- Generic Drug Cost
- $7K
- Antibiotic Claims
- 32
Patient Demographics
- Average Patient Age
- 69.7 years
- Avg HCC Risk Score
- 1.83
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 40, 65-74: 83, 75-84: 44, 85+: 15
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Marissa Lowrie, FNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ozempic
Ozempic
60 claims
- Amlodipine Besylate
Amlodipine Besylate
39 claims
- Omeprazole 18
Omeprazole
18 claims
- Mounjaro 17
Mounjaro
17 claims
- Diclofenac Sodium 14
Diclofenac Sodium
14 claims
- Losartan Potassium 14
Losartan Potassium
14 claims
- Atorvastatin Calcium 13
Atorvastatin Calcium
13 claims
- Levothyroxine Sodium 13
Levothyroxine Sodium
13 claims
| Drug | Claims |
|---|---|
| Ozempic Semaglutide | 60 |
| Amlodipine Besylate | 39 |
| Omeprazole | 18 |
| Mounjaro Tirzepatide | 17 |
| Diclofenac Sodium | 14 |
| Losartan Potassium | 14 |
| Atorvastatin Calcium | 13 |
| Levothyroxine Sodium | 13 |
| Rosuvastatin Calcium | 13 |
| Doxycycline Hyclate | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Nurse Practitioner Overview
How Marissa Lowrie, FNP fits within the Family Nurse Practitioner landscape nationally.
210,832
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider
Marissa Lowrie, FNP's 496 claims are below the specialty average of 1,222.
Nearby Family Nurse Practitioner Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Lowrie.
Dr. Renato Abastillas
APRN
Rocky Hill, CT
Farhiya Abdi
South Windsor, CT
Dr. Maryam Abdishoo
NP
Putnam, CT
Dr. Anwar Abdulrehman
APRN
Danbury, CT
Denise Ace
Stratford, CT
Compare Family 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 Connecticut medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Family 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 Marissa Lowrie, FNP's specialty? ▼
Marissa Lowrie, FNP specializes in Family Nurse Practitioner and practices in Darien, Connecticut. Credentials: FNP.
How much does Marissa Lowrie, FNP prescribe under Medicare Part D? ▼
In 2023, Marissa Lowrie, FNP wrote 496 Medicare Part D claims totaling $112K in drug costs for 182 beneficiaries.
What is Marissa Lowrie, FNP's Medicare quality score? ▼
Marissa Lowrie, FNP has a CMS MIPS Final Score of 73.6/100 (Quality: 75.8, Cost: 51.4). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Marissa Lowrie, FNP located? ▼
Marissa Lowrie, FNP is located at 104 HEIGHTS RD, Darien, CT, 06820. Phone: (888) 663-6331.
What is Marissa Lowrie, FNP's NPI number? ▼
Marissa Lowrie, FNP's National Provider Identifier (NPI) is 1801382825, issued on 07/02/2018.
Does Marissa Lowrie, FNP prescribe more brand-name or generic drugs? ▼
Marissa Lowrie, FNP's prescribing is 25% brand-name and 71% generic drugs by claim count, with $105K in brand drug costs.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 210,832 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does Marissa Lowrie, FNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Marissa Lowrie, FNP's most frequently prescribed drugs include Ozempic, Amlodipine Besylate, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Marissa Lowrie, FNP accept Medicare? ▼
Marissa Lowrie, FNP appears in CMS Medicare data with 496 Part D claims and 182 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Marissa Lowrie, FNP's credentials? ▼
Marissa Lowrie, FNP's NPI is 1801382825 with credentials FNP. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.