NPI registry status
Active
2026 NPPES data Gerontology Nurse Practitioner NPI 1720681554 AG-ACNP
Verify on CMS → Courtney Makus, AG-ACNP
Gerontology Nurse Practitioner in Ames, Iowa.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 9,706 in Gerontology 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
854
Medicare Part D claims · 208 beneficiaries · Gerontology Nurse Practitioner avg: 1K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$219.05
7 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Courtney Makus, AG-ACNP filed 854 Medicare Part D claims in 2023 as a Gerontology Nurse Practitioner in Ames, Iowa, prescribing 83% generic.
- 854
- Part D claims, 2023
- 83%
- generic prescribing
- $219.05
- 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.
Courtney Makus, AG-ACNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
854 Top 27% higher than 73% of 1,370,886 prescribers
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 Courtney Makus, AG-ACNP?
Quality data not reportedPrimary specialty
Gerontology Nurse Practitioner
Medicare Part D claims
854 33% vs specialty avg
Specialty distribution in Iowa
How Gerontology Nurse Practitioner compares to other specialties among Iowa providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Gerontology Nurse Practitioner. Verify directly:
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).
Courtney Makus, AG-ACNP appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider holding AG-ACNP credentials at 1111 DUFF AVCENUE, Ames, IA, 50010, with a listed phone of (515) 239-4472. NPI 1720681554 was issued on 11/16/2020.
Medicare Part D records for calendar year 2023 show 854 prescription claims written by this provider, covering 208 Medicare beneficiaries and totaling roughly $82K in drug spend, split 17% brand-name and 83% generic by claim count.
Gerontology Nurse Practitioner is a mid-sized specialty nationwide, with 9,706 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
Provider Details
| NPI | 1720681554 |
|---|---|
| Specialty | Gerontology Nurse Practitioner |
| Credentials | AG-ACNP |
| Gender | Female |
| NPI Issued | 11/16/2020 |
Hospital and facility affiliations
Facilities where Courtney Makus, AG-ACNP 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.
According to CMS billing records, Courtney Makus, AG-ACNP is affiliated with 3 Medicare-billing facilities, 1 of which carry a CMS Hospital overall star rating.
Mary Greeley Medical Center
★★★★☆ 4/5
Ames, IA
Acute Care Hospitals
CMS CCN: 160030
Central Iowa Hospital Corporation
Des Moines, IA
Mcfarland Clinic PC
Ames, 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).
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 Courtney Makus, AG-ACNP. Source: openpaymentsdata.cms.gov.
Total received
$219
Largest payer
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
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.
Brand vs generic prescribing mix · Typical
Courtney Makus, AG-ACNP - brand share 17.0%
Gerontology Nurse Practitioner average
17% brand-name claims vs 83% generic, on 854 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.
854
Total Claims
$82K
Total Drug Cost
208
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,121
- Total Day Supply
- 32,351
- Brand vs Generic
- 17% brand / 83% generic
- Brand Drug Cost
- $72K
- Generic Drug Cost
- $10K
Patient Demographics
- Average Patient Age
- 75.8 years
- Avg HCC Risk Score
- 2.37
- Gender Split
- 47% female / 53% male
- Age Distribution
- <65: 23, 65-74: 71, 75-84: 66, 85+: 48
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Courtney Makus, AG-ACNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Furosemide
Furosemide
86 claims
- Metoprolol Succinate
Metoprolol Succinate
71 claims
- Clopidogrel
Clopidogrel
54 claims
- Amiodarone Hcl
Amiodarone Hcl
48 claims
- Losartan Potassium
Losartan Potassium
36 claims
- Spironolactone
Spironolactone
36 claims
- Bumetanide 34
Bumetanide
34 claims
- Metoprolol Tartrate 33
Metoprolol Tartrate
33 claims
| Drug | Claims |
|---|---|
| Furosemide | 86 |
| Metoprolol Succinate | 71 |
| Clopidogrel Clopidogrel Bisulfate | 54 |
| Amiodarone Hcl | 48 |
| Losartan Potassium | 36 |
| Spironolactone | 36 |
| Bumetanide | 34 |
| Metoprolol Tartrate | 33 |
| Isosorbide Mononitrate Er Isosorbide Mononitrate | 32 |
| Xarelto Rivaroxaban | 32 |
* 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 Courtney Makus, AG-ACNP fits within the Gerontology Nurse Practitioner landscape nationally.
9,706
Gerontology Nurse Practitioner Providers in US
54
States with Gerontology Nurse Practitioner
1,283
Avg Claims per Provider
Courtney Makus, AG-ACNP's 854 claims are below 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 Makus.
Dr. Rachel Amling
ARNP
Waterloo, IA
Dr. Cailey Anderson
ARNP
Cedar Rapids, IA
Alec Antanaitis
Jefferson, IA
Dr. Jill Ballantine
AGACNP
Dubuque, IA
Dr. Karen Bates
MSN,ARNP,GNP
Story City, IA
Compare Gerontology 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 Iowa medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gerontology 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 Courtney Makus, AG-ACNP's specialty? ▼
Courtney Makus, AG-ACNP specializes in Gerontology Nurse Practitioner and practices in Ames, Iowa. Credentials: AG-ACNP.
How much does Courtney Makus, AG-ACNP prescribe under Medicare Part D? ▼
In 2023, Courtney Makus, AG-ACNP wrote 854 Medicare Part D claims totaling $82K in drug costs for 208 beneficiaries.
Where is Courtney Makus, AG-ACNP located? ▼
Courtney Makus, AG-ACNP is located at 1111 DUFF AVCENUE, Ames, IA, 50010. Phone: (515) 239-4472.
What is Courtney Makus, AG-ACNP's NPI number? ▼
Courtney Makus, AG-ACNP's National Provider Identifier (NPI) is 1720681554, issued on 11/16/2020.
Does Courtney Makus, AG-ACNP prescribe more brand-name or generic drugs? ▼
Courtney Makus, AG-ACNP's prescribing is 17% brand-name and 83% generic drugs by claim count, with $72K in brand drug costs.
How many Gerontology Nurse Practitioner providers are there in the US? ▼
There are 9,706 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 Courtney Makus, AG-ACNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Courtney Makus, AG-ACNP's most frequently prescribed drugs include Furosemide, Metoprolol Succinate, Clopidogrel. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Courtney Makus, AG-ACNP accept Medicare? ▼
Courtney Makus, AG-ACNP appears in CMS Medicare data with 854 Part D claims and 208 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Courtney Makus, AG-ACNP's credentials? ▼
Courtney Makus, AG-ACNP's NPI is 1720681554 with credentials AG-ACNP. 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.
- 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.