2026 NPPES data Registered Nurse NPI 1558995159 ARNP
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ANNIKA BROOKS, ARNP

Registered Nurse in THE DALLES, Oregon. 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
912
Medicare Part D claims · 136 beneficiaries · Registered Nurse avg: 1K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ANNIKA BROOKS, ARNP filed 912 Medicare Part D claims in 2023 as a Registered Nurse in THE DALLES, Oregon, prescribing 88% generic.

912
Part D claims, 2023
88%
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.

ANNIKA BROOKS, ARNP's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

912 Top 25% higher than 75% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 ANNIKA BROOKS, ARNP?

Quality data not reported

NPI registry status

Active

Issued 02/24/2020

NPI 1558995159

Primary specialty

Registered Nurse

High-volume

175,652 US NPIs in this specialty

Medicare Part D claims

912 9% vs specialty avg

2023 prescription claims

Specialty avg: 1,000

Specialty distribution in Oregon

How Registered Nurse compares to other specialties among Oregon providers

Oregon providers

Registered Nurse share within Oregon

1. Registered Nurse42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Registered Nurse share within Oregon

Specialty board-certification context

Estimated specialty board-certified rate — Registered Nurse (ABMS / AOA reference)

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

Est. board-certified rate (Registered Nurse) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Registered Nurse) — 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).

ANNIKA BROOKS, ARNP appears in the CMS NPPES registry as a Registered Nurse provider holding ARNP credentials at 1040 WEBBER ST, THE DALLES, OR, 97058, with a listed phone of (541) 296-4610. NPI 1558995159 was issued on 02/24/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BROOKS 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 912 prescription claims written by this provider, covering 136 Medicare beneficiaries and totaling roughly $119K in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 2.0%. 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.

Registered Nurse is a high-volume specialty nationwide, with 175,652 enrolled providers across 56 states and an average of 1,000 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

1040 WEBBER ST
THE DALLES, OR 97058

Provider Details

NPI 1558995159
Specialty Registered Nurse
Credentials ARNP
Gender Female
NPI Issued 02/24/2020

Hospital and facility affiliations

Facilities where ANNIKA BROOKS, ARNP 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.

ONE COMMUNITY HEALTH
THE DALLES, OR

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 · Typical

ANNIKA BROOKS, ARNP — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 912 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.

912
Total Claims
$119K
Total Drug Cost
136
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,566
Total Day Supply
44,057
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$100K
Generic Drug Cost
$18K
Opioid Claims
18 (2.0% rate)
Antibiotic Claims
38

Patient Demographics

Average Patient Age
66.8 years
Avg HCC Risk Score
0.94
Gender Split
49% female / 51% male
Age Distribution
<65: 35, 65-74: 65, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What ANNIKA BROOKS, ARNP prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
56
Trazodone Hcl
43
Lisinopril
41
Gabapentin
27
Omeprazole
27
Amlodipine Besylate
24
Furosemide
23
Metformin Hcl
22
Pantoprazole Sodium
21
Metoprolol Succinate
20

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

Registered Nurse Overview

How ANNIKA BROOKS, ARNP fits within the Registered Nurse landscape nationally.

175,652
Registered Nurse Providers in US
56
States with Registered Nurse
1,000
Avg Claims per Provider

ANNIKA BROOKS, ARNP's 912 claims are below the specialty average of 1,000.

Nearby Registered Nurse Providers in Oregon

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

Compare Registered Nurse nationally: see state-by-state distribution →

Frequently Asked Questions

What is ANNIKA BROOKS, ARNP's specialty?
ANNIKA BROOKS, ARNP specializes in Registered Nurse and practices in THE DALLES, Oregon. Credentials: ARNP.
How much does ANNIKA BROOKS, ARNP prescribe under Medicare Part D?
In 2023, ANNIKA BROOKS, ARNP wrote 912 Medicare Part D claims totaling $119K in drug costs for 136 beneficiaries.
Where is ANNIKA BROOKS, ARNP located?
ANNIKA BROOKS, ARNP is located at 1040 WEBBER ST, THE DALLES, OR, 97058. Phone: (541) 296-4610.
What is ANNIKA BROOKS, ARNP's NPI number?
ANNIKA BROOKS, ARNP's National Provider Identifier (NPI) is 1558995159, issued on 02/24/2020.
Does ANNIKA BROOKS, ARNP prescribe more brand-name or generic drugs?
ANNIKA BROOKS, ARNP's prescribing is 12% brand-name and 88% generic drugs by claim count, with $100K in brand drug costs.
Does ANNIKA BROOKS, ARNP prescribe opioids?
Yes, ANNIKA BROOKS, ARNP had 18 opioid claims in 2023 with an opioid prescribing rate of 2.0%.
How many Registered Nurse providers are there in the US?
There are 175,652 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,000 Medicare Part D claims per year.
What drugs does ANNIKA BROOKS, ARNP prescribe most often?
Based on 2023 Medicare Part D data, ANNIKA BROOKS, ARNP's most frequently prescribed drugs include Atorvastatin Calcium, Trazodone Hcl, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANNIKA BROOKS, ARNP accept Medicare?
ANNIKA BROOKS, ARNP appears in CMS Medicare data with 912 Part D claims and 136 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANNIKA BROOKS, ARNP's credentials?
ANNIKA BROOKS, ARNP's NPI is 1558995159 with credentials ARNP. 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