2026 NPPES data Acute Care Nurse Practitioner NPI 1487365789 APRN
Verify on CMS →

CASIE REILLY, APRN

Acute Care Nurse Practitioner in PORTLAND, Maine. 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
37
Medicare Part D claims · 13 beneficiaries · Acute Care Nurse Practitioner avg: 576
Generic prescribing
62%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: CASIE REILLY, APRN is a Acute Care Nurse Practitioner ([object Object]) practicing in PORTLAND, Maine with a Medicare Part D prescribing footprint of 37 claims across 13 beneficiaries — 38% brand-name prescribing .

What the federal data shows

CASIE REILLY, APRN filed 37 Medicare Part D claims in 2023 as a Acute Care Nurse Practitioner in PORTLAND, Maine, prescribing 62% generic.

37
Part D claims, 2023
62%
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.

CASIE REILLY, APRN at a glance

Quality data not reported

NPI registry status

Active

Issued 12/07/2022

NPI 1487365789

Primary specialty

Acute Care Nurse Practitioner

Mid-sized

24,583 US NPIs in this specialty

Medicare Part D claims

37 94% vs specialty avg

2023 prescription claims

Specialty avg: 576

Specialty distribution in Maine

How Acute Care Nurse Practitioner compares to other specialties among Maine providers

Maine providers

Acute Care Nurse Practitioner share within Maine

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

Specialty board-certification context

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

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

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

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

CASIE REILLY, APRN is a Acute Care Nurse Practitioner provider practicing in PORTLAND, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: APRN. NPI: 1487365789. 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.

CASIE REILLY, APRN appears in the CMS NPPES registry as a Acute Care Nurse Practitioner provider holding APRN credentials at 22 BRAMHALL ST, PORTLAND, ME, 04102, with a listed phone of (207) 662-0111. NPI 1487365789 was issued on 12/07/2022. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what REILLY 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 37 prescription claims written by this provider, covering 13 Medicare beneficiaries and totaling roughly $39K in drug spend, split 38% brand-name and 62% generic by claim count. 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.

Acute Care Nurse Practitioner is a mid-sized specialty nationwide, with 24,583 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

22 BRAMHALL ST
PORTLAND, ME 04102

Provider Details

NPI 1487365789
Specialty Acute Care Nurse Practitioner
Credentials APRN
Gender Female
NPI Issued 12/07/2022

Hospital and facility affiliations

Facilities where CASIE REILLY, APRN 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

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

CASIE REILLY, APRN — brand share 38.0%
Specialty average (est.)

38% brand-name claims vs 62% generic, on 37 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.

37
Total Claims
$39K
Total Drug Cost
13
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
43
Total Day Supply
891
Brand vs Generic
38% brand / 62% generic
Brand Drug Cost
$39K
Generic Drug Cost
$449

Patient Demographics

Average Patient Age
72.6 years
Avg HCC Risk Score
2.16

Acute Care Nurse Practitioner Overview

How CASIE REILLY, APRN fits within the Acute Care Nurse Practitioner landscape nationally.

24,583
Acute Care Nurse Practitioner Providers in US
53
States with Acute Care Nurse Practitioner
576
Avg Claims per Provider

CASIE REILLY, APRN's 37 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 REILLY.

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

Frequently Asked Questions

What is CASIE REILLY, APRN's specialty?
CASIE REILLY, APRN specializes in Acute Care Nurse Practitioner and practices in PORTLAND, Maine. Credentials: APRN.
How much does CASIE REILLY, APRN prescribe under Medicare Part D?
In 2023, CASIE REILLY, APRN wrote 37 Medicare Part D claims totaling $39K in drug costs for 13 beneficiaries.
Where is CASIE REILLY, APRN located?
CASIE REILLY, APRN is located at 22 BRAMHALL ST, PORTLAND, ME, 04102. Phone: (207) 662-0111.
What is CASIE REILLY, APRN's NPI number?
CASIE REILLY, APRN's National Provider Identifier (NPI) is 1487365789, issued on 12/07/2022.
Does CASIE REILLY, APRN prescribe more brand-name or generic drugs?
CASIE REILLY, APRN's prescribing is 38% brand-name and 62% generic drugs by claim count, with $39K in brand drug costs.
How many Acute Care Nurse Practitioner providers are there in the US?
There are 24,583 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.
Does CASIE REILLY, APRN accept Medicare?
CASIE REILLY, APRN appears in CMS Medicare data with 37 Part D claims and 13 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CASIE REILLY, APRN's credentials?
CASIE REILLY, APRN's NPI is 1487365789 with credentials APRN. 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