NPI registry status
Active
2026 NPPES data Acute Care Nurse Practitioner NPI 1699782623 APRN-BC
Verify on CMS → Mary Brennan, APRN-BC
Acute Care Nurse Practitioner in Portland, Maine.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 24,697 in Acute Care 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
53
Medicare Part D claims · 38 beneficiaries · Acute Care Nurse Practitioner avg: 576
MIPS score
98.1/100
▲ 15 pts above national avg 83.1 · Exceptional
Industry payments
$54.97
2 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Mary Brennan, APRN-BC reported a CMS MIPS final score of 98.1/100 - above the 83.1 national average - and filed 53 Medicare Part D claims in 2023.
- 98.1/100
- MIPS score · +15 vs avg
- 53
- Part D claims, 2023
- $54.97
- 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.
Mary Brennan, APRN-BC's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
98 Top 11% higher than 89% 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 Mary Brennan, APRN-BC sits
This provider among acute care nurse practitioner peers
Across the 3,864 acute care nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Mary Brennan, APRN-BC writes more Part D claims than 23% of them and scores higher on MIPS quality than 89% - placing this provider in the lower-volume, high-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 acute care nurse practitioner peer from a representative sample of 60; the gold marker is Mary Brennan, APRN-BC. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Mary Brennan, APRN-BC?
High performer (top quartile)Primary specialty
Acute Care Nurse Practitioner
Medicare Part D claims
53 91% vs specialty avg
MIPS final score
98.1/100 15 pts vs avg
Specialty distribution in Maine
How Acute Care Nurse Practitioner compares to other specialties among Maine providers
Medicare quality performance, MIPS
Mary Brennan, APRN-BC's 2023 MIPS final score plotted against the Acute Care Nurse Practitioner national average
- MIPS Final Score
- 98.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Acute Care Nurse Practitioner) - 98.1/100 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).
Mary Brennan, APRN-BC appears in the CMS NPPES registry as an Acute Care Nurse Practitioner provider holding APRN-BC credentials at 10 ANDOVER RD, Portland, ME, 04102, with a listed phone of (207) 761-6642. NPI 1699782623 was issued on 08/02/2006.
Medicare Part D records for calendar year 2023 show 53 prescription claims written by this provider, covering 38 Medicare beneficiaries and totaling roughly $4K in drug spend, with an opioid prescribing rate of 34.0%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 98.1/100 for the 2023 performance year (Quality 86.1), compared with the national average of 83.1.
Acute Care Nurse Practitioner is a mid-sized specialty nationwide, with 24,697 enrolled providers across 53 states and an average of 576 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 | 1699782623 |
|---|---|
| Specialty | Acute Care Nurse Practitioner |
| Credentials | APRN-BC |
| Gender | Female |
| NPI Issued | 08/02/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
98.0699
Final Score
Avg: 83.1
86.1398
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Mary Brennan, APRN-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.
Mainehealth
Portland, ME
Select Physical Therapy Holdings Inc
Auburn, ME
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Mary Brennan, APRN-BC. Source: openpaymentsdata.cms.gov.
Total received
$55
Largest payer
ABBVIE 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
53
Total Claims
$4K
Total Drug Cost
38
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 59
- Total Day Supply
- 861
- Generic Drug Cost
- $2K
- Opioid Claims
- 18 (34.0% rate)
Patient Demographics
- Average Patient Age
- 68.2 years
- Avg HCC Risk Score
- 1.33
- Gender Split
- 55% female / 45% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Acute Care Nurse Practitioner Overview
How Mary Brennan, APRN-BC fits within the Acute Care Nurse Practitioner landscape nationally.
24,697
Acute Care Nurse Practitioner Providers in US
53
States with Acute Care Nurse Practitioner
576
Avg Claims per Provider
Mary Brennan, APRN-BC's 53 claims are below the specialty average of 576.
Nearby Acute Care Nurse Practitioner Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Brennan.
Dr. Amber Anderson
AGACNP-BC
Bangor, ME
Dr. Laura Apgar
AG-ACNP
South Portland, ME
Kelsey Averill
Lewiston, ME
Dr. Erin Bacon
AGACNP
Portland, ME
Dr. Kateryna Bagrii
AGACNP
Portland, ME
Compare Acute Care 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 Maine medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Acute Care 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 Mary Brennan, APRN-BC's specialty? ▼
Mary Brennan, APRN-BC specializes in Acute Care Nurse Practitioner and practices in Portland, Maine. Credentials: APRN-BC.
How much does Mary Brennan, APRN-BC prescribe under Medicare Part D? ▼
In 2023, Mary Brennan, APRN-BC wrote 53 Medicare Part D claims totaling $4K in drug costs for 38 beneficiaries.
What is Mary Brennan, APRN-BC's Medicare quality score? ▼
Mary Brennan, APRN-BC has a CMS MIPS Final Score of 98.1/100 (Quality: 86.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mary Brennan, APRN-BC located? ▼
Mary Brennan, APRN-BC is located at 10 ANDOVER RD, Portland, ME, 04102. Phone: (207) 761-6642.
What is Mary Brennan, APRN-BC's NPI number? ▼
Mary Brennan, APRN-BC's National Provider Identifier (NPI) is 1699782623, issued on 08/02/2006.
Does Mary Brennan, APRN-BC prescribe opioids? ▼
Yes, Mary Brennan, APRN-BC had 18 opioid claims in 2023 with an opioid prescribing rate of 34.0%.
How many Acute Care Nurse Practitioner providers are there in the US? ▼
There are 24,697 Acute Care Nurse Practitioner providers across 53 states in the US. The average Acute Care Nurse Practitioner provider writes 576 Medicare Part D claims per year.
What drugs does Mary Brennan, APRN-BC prescribe most often? ▼
Based on 2023 Medicare Part D data, Mary Brennan, APRN-BC's most frequently prescribed drugs include Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mary Brennan, APRN-BC accept Medicare? ▼
Mary Brennan, APRN-BC appears in CMS Medicare data with 53 Part D claims and 38 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mary Brennan, APRN-BC's credentials? ▼
Mary Brennan, APRN-BC's NPI is 1699782623 with credentials APRN-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
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
Compiled from official public sources by the PlainDoctor editorial team.
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.