2026 NPPES data Gerontology Nurse Practitioner NPI 1194183756 ARNP
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ASHLEY GREINER, ARNP

Gerontology Nurse Practitioner in KALONA, 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 · 394 beneficiaries · Gerontology Nurse Practitioner avg: 1K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: ASHLEY GREINER, ARNP is a Gerontology Nurse Practitioner ([object Object]) practicing in KALONA, Iowa with a Medicare Part D prescribing footprint of 3K claims across 394 beneficiaries — 10% brand-name prescribing .

What stands out: ASHLEY GREINER, ARNP filed 3,145 Medicare Part D claims in 2023 across KALONA, Iowa. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

ASHLEY GREINER, ARNP at a glance

Quality data not reported

NPI registry status

Active

Issued 02/10/2016

NPI 1194183756

Primary specialty

Gerontology Nurse Practitioner

Mid-sized

9,625 US NPIs in this specialty

Medicare Part D claims

3,145 145% vs specialty avg

2023 prescription claims

Specialty avg: 1,283

Specialty distribution in Iowa

How Gerontology Nurse Practitioner compares to other specialties among Iowa providers

Iowa providers

Gerontology Nurse Practitioner share within Iowa

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

Specialty board-certification context

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

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

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

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

ASHLEY GREINER, ARNP is a Gerontology Nurse Practitioner provider practicing in KALONA, Iowa, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: ARNP. NPI: 1194183756. 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.

ASHLEY GREINER, ARNP appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider holding ARNP credentials at 503 3RD ST, KALONA, IA, 52247, with a listed phone of (319) 656-3151. NPI 1194183756 was issued on 02/10/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GREINER 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 3,145 prescription claims written by this provider, covering 394 Medicare beneficiaries and totaling roughly $246K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 1.8%. 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.

Gerontology Nurse Practitioner is a mid-sized specialty nationwide, with 9,625 enrolled providers across 54 states and an average of 1,283 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

503 3RD ST
KALONA, IA 52247

Provider Details

NPI 1194183756
Specialty Gerontology Nurse Practitioner
Credentials ARNP
Gender Female
NPI Issued 02/10/2016

Hospital and facility affiliations

Facilities where ASHLEY GREINER, 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.

WASHINGTON COUNTY HOSPITAL
WASHINGTON, 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

ASHLEY GREINER, ARNP — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 3,145 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.

3,145
Total Claims
$246K
Total Drug Cost
394
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
6,373
Total Day Supply
184,760
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$197K
Generic Drug Cost
$48K
Opioid Claims
57 (1.8% rate)
Antibiotic Claims
78

Patient Demographics

Average Patient Age
74.5 years
Avg HCC Risk Score
1.01
Gender Split
63% female / 37% male
Age Distribution
<65: 27, 65-74: 187, 75-84: 122, 85+: 58

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
188
Levothyroxine Sodium
176
Losartan Potassium
119
Lisinopril
107
Amlodipine Besylate
95
Hydrochlorothiazide
88
Furosemide
87
Metoprolol Succinate
85
Simvastatin
71
Omeprazole
70

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

Gerontology Nurse Practitioner Overview

How ASHLEY GREINER, ARNP fits within the Gerontology Nurse Practitioner landscape nationally.

9,625
Gerontology Nurse Practitioner Providers in US
54
States with Gerontology Nurse Practitioner
1,283
Avg Claims per Provider

ASHLEY GREINER, ARNP's 3,145 claims are above the specialty average of 1,283.

Nearby Gerontology Nurse Practitioner Providers in Iowa

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

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

Frequently Asked Questions

What is ASHLEY GREINER, ARNP's specialty?
ASHLEY GREINER, ARNP specializes in Gerontology Nurse Practitioner and practices in KALONA, Iowa. Credentials: ARNP.
How much does ASHLEY GREINER, ARNP prescribe under Medicare Part D?
In 2023, ASHLEY GREINER, ARNP wrote 3,145 Medicare Part D claims totaling $246K in drug costs for 394 beneficiaries.
Where is ASHLEY GREINER, ARNP located?
ASHLEY GREINER, ARNP is located at 503 3RD ST, KALONA, IA, 52247. Phone: (319) 656-3151.
What is ASHLEY GREINER, ARNP's NPI number?
ASHLEY GREINER, ARNP's National Provider Identifier (NPI) is 1194183756, issued on 02/10/2016.
Does ASHLEY GREINER, ARNP prescribe more brand-name or generic drugs?
ASHLEY GREINER, ARNP's prescribing is 10% brand-name and 90% generic drugs by claim count, with $197K in brand drug costs.
Does ASHLEY GREINER, ARNP prescribe opioids?
Yes, ASHLEY GREINER, ARNP had 57 opioid claims in 2023 with an opioid prescribing rate of 1.8%.
How many Gerontology Nurse Practitioner providers are there in the US?
There are 9,625 Gerontology Nurse Practitioner providers across 54 states in the US. The average Gerontology Nurse Practitioner provider writes 1,283 Medicare Part D claims per year.
What drugs does ASHLEY GREINER, ARNP prescribe most often?
Based on 2023 Medicare Part D data, ASHLEY GREINER, ARNP's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ASHLEY GREINER, ARNP accept Medicare?
ASHLEY GREINER, ARNP appears in CMS Medicare data with 3,145 Part D claims and 394 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ASHLEY GREINER, ARNP's credentials?
ASHLEY GREINER, ARNP's NPI is 1194183756 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