2026 NPPES data Nurse Practitioner NPI 1942615042 ARNP
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ERIN BALK, ARNP

Nurse Practitioner in CEDAR RAPIDS, Iowa. 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
3K
Medicare Part D claims · 206 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: ERIN BALK, ARNP is a Nurse Practitioner ([object Object]) practicing in CEDAR RAPIDS, Iowa with a Medicare Part D prescribing footprint of 3K claims across 206 beneficiaries — 15% brand-name prescribing .

What stands out: ERIN BALK, ARNP filed 2,695 Medicare Part D claims in 2023 across CEDAR RAPIDS, Iowa. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

ERIN BALK, ARNP at a glance

Quality data not reported

NPI registry status

Active

Issued 06/26/2014

NPI 1942615042

Primary specialty

Nurse Practitioner

High-volume

87,227 US NPIs in this specialty

Medicare Part D claims

2,695 149% vs specialty avg

2023 prescription claims

Specialty avg: 1,084

Specialty distribution in Iowa

How Nurse Practitioner compares to other specialties among Iowa providers

Iowa providers

Nurse Practitioner share within Iowa

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

Specialty board-certification context

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

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

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

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

ERIN BALK, ARNP is a Nurse Practitioner provider practicing in CEDAR RAPIDS, Iowa, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: ARNP. NPI: 1942615042. 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.

ERIN BALK, ARNP appears in the CMS NPPES registry as a Nurse Practitioner provider holding ARNP credentials at 1026 A AVE NE, CEDAR RAPIDS, IA, 52402, with a listed phone of (319) 366-8714. NPI 1942615042 was issued on 06/26/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BALK 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 2,695 prescription claims written by this provider, covering 206 Medicare beneficiaries and totaling roughly $192K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 3.6%. 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.

Nurse Practitioner is a high-volume specialty nationwide, with 87,227 enrolled providers across 56 states and an average of 1,084 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

1026 A AVE NE
CEDAR RAPIDS, IA 52402

Provider Details

NPI 1942615042
Specialty Nurse Practitioner
Credentials ARNP
Gender Female
NPI Issued 06/26/2014

Hospital and facility affiliations

Facilities where ERIN BALK, 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.

ST LUKES METHODIST HOSPITAL
CEDAR RAPIDS, IA

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

ERIN BALK, ARNP — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 2,695 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.

2,695
Total Claims
$192K
Total Drug Cost
206
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,988
Total Day Supply
67,172
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$140K
Generic Drug Cost
$51K
Opioid Claims
97 (3.6% rate)
Antibiotic Claims
61

Patient Demographics

Average Patient Age
80.0 years
Avg HCC Risk Score
2.44
Gender Split
62% female / 38% 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
Potassium Chloride
123
Levothyroxine Sodium
117
Furosemide
116
Pantoprazole Sodium
108
Trazodone Hcl
92
Sertraline Hcl
83
Atorvastatin Calcium
69
Mirtazapine
66
Metoprolol Succinate
52
Bumetanide
50

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

Nurse Practitioner Overview

How ERIN BALK, ARNP fits within the Nurse Practitioner landscape nationally.

87,227
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider

ERIN BALK, ARNP's 2,695 claims are above the specialty average of 1,084.

Nearby Nurse Practitioner Providers in Iowa

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

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

Frequently Asked Questions

What is ERIN BALK, ARNP's specialty?
ERIN BALK, ARNP specializes in Nurse Practitioner and practices in CEDAR RAPIDS, Iowa. Credentials: ARNP.
How much does ERIN BALK, ARNP prescribe under Medicare Part D?
In 2023, ERIN BALK, ARNP wrote 2,695 Medicare Part D claims totaling $192K in drug costs for 206 beneficiaries.
Where is ERIN BALK, ARNP located?
ERIN BALK, ARNP is located at 1026 A AVE NE, CEDAR RAPIDS, IA, 52402. Phone: (319) 366-8714.
What is ERIN BALK, ARNP's NPI number?
ERIN BALK, ARNP's National Provider Identifier (NPI) is 1942615042, issued on 06/26/2014.
Does ERIN BALK, ARNP prescribe more brand-name or generic drugs?
ERIN BALK, ARNP's prescribing is 15% brand-name and 85% generic drugs by claim count, with $140K in brand drug costs.
Does ERIN BALK, ARNP prescribe opioids?
Yes, ERIN BALK, ARNP had 97 opioid claims in 2023 with an opioid prescribing rate of 3.6%.
How many Nurse Practitioner providers are there in the US?
There are 87,227 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
What drugs does ERIN BALK, ARNP prescribe most often?
Based on 2023 Medicare Part D data, ERIN BALK, ARNP's most frequently prescribed drugs include Potassium Chloride, Levothyroxine Sodium, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ERIN BALK, ARNP accept Medicare?
ERIN BALK, ARNP appears in CMS Medicare data with 2,695 Part D claims and 206 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ERIN BALK, ARNP's credentials?
ERIN BALK, ARNP's NPI is 1942615042 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