NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Nurse Practitioner NPI 1184622425 A.R.N.P.
Verify on CMS → Deanne Bolhuis, A.R.N.P.
Obstetrics & Gynecology Nurse Practitioner in Waterloo, 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 2,867 in Obstetrics & Gynecology 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
204
Medicare Part D claims · 71 beneficiaries · Obstetrics & Gynecology Nurse Practitioner avg: 232
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Deanne Bolhuis, A.R.N.P. filed 204 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Nurse Practitioner in Waterloo, Iowa, prescribing 90% generic.
- 204
- Part D claims, 2023
- 90%
- 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.
Deanne Bolhuis, A.R.N.P.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
204 49th percentile higher than 49% 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 Deanne Bolhuis, A.R.N.P.?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Nurse Practitioner
Medicare Part D claims
204 12% vs specialty avg
Specialty distribution in Iowa
How Obstetrics & Gynecology 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 Obstetrics & Gynecology 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).
Deanne Bolhuis, A.R.N.P. appears in the CMS NPPES registry as an Obstetrics & Gynecology Nurse Practitioner provider holding A.R.N.P. credentials at 432 KING DR, Waterloo, IA, 50702, with a listed phone of (319) 234-5764. NPI 1184622425 was issued on 07/11/2005.
Medicare Part D records for calendar year 2023 show 204 prescription claims written by this provider, covering 71 Medicare beneficiaries and totaling roughly $14K in drug spend, split 10% brand-name and 90% generic by claim count.
Obstetrics & Gynecology Nurse Practitioner is a narrow specialty nationwide, with 2,867 enrolled providers across 52 states and an average of 232 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 | 1184622425 |
|---|---|
| Specialty | Obstetrics & Gynecology Nurse Practitioner |
| Credentials | A.R.N.P. |
| Gender | Female |
| NPI Issued | 07/11/2005 |
Hospital and facility affiliations
Facilities where Deanne Bolhuis, A.R.N.P. 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.
Iowa Physicians Clinic Medical Foundation
Waterloo, 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
Deanne Bolhuis, A.R.N.P. - brand share 10.0%
Obstetrics & Gynecology Nurse Practitioner average
10% brand-name claims vs 90% generic, on 204 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.
204
Total Claims
$14K
Total Drug Cost
71
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 374
- Total Day Supply
- 10,092
- Brand vs Generic
- 10% brand / 90% generic
- Brand Drug Cost
- $4K
- Generic Drug Cost
- $10K
- Antibiotic Claims
- 14
Patient Demographics
- Average Patient Age
- 64.5 years
- Avg HCC Risk Score
- 0.89
- Gender Split
- 100% female / 0% male
- Age Distribution
- <65: 20, 65-74: 38, 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 Deanne Bolhuis, A.R.N.P. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Estradiol
Estradiol
31 claims
- Valacyclovir
Valacyclovir
21 claims
- Clobetasol Propion…
Clobetasol Propionate
17 claims
- Vienva
Vienva
13 claims
| Drug | Claims |
|---|---|
| Estradiol | 31 |
| Valacyclovir Valacyclovir Hcl | 21 |
| Clobetasol Propionate | 17 |
| Vienva Levonorgestrel/Ethin.Estradiol | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Obstetrics & Gynecology Nurse Practitioner in IA →
All providers in Iowa →
Compare specialties →
Obstetrics & Gynecology Nurse Practitioner Overview
How Deanne Bolhuis, A.R.N.P. fits within the Obstetrics & Gynecology Nurse Practitioner landscape nationally.
2,867
Obstetrics & Gynecology Nurse Practitioner Providers in US
52
States with Obstetrics & Gynecology Nurse Practitioner
232
Avg Claims per Provider
Deanne Bolhuis, A.R.N.P.'s 204 claims are below the specialty average of 232.
Nearby Obstetrics & Gynecology Nurse Practitioner Providers in Iowa
Other clinicians with the same primary specialty enrolled in Iowa, drawn from the same CMS NPPES roster as Bolhuis.
Dr. Lorena Allen
ARNP
Mount Pleasant, IA
Dr. Abigail Bartolo-Costello
WHNP/MSN
Iowa City, IA
Dr. Jeanne Batcheller
ARNP
Sioux City, IA
Dr. Nancy Beavers
ARNP
Mason City, IA
Dr. Cynthia Bruins
ARNP
Indianola, IA
Compare Obstetrics & Gynecology 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 Obstetrics & Gynecology 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 Deanne Bolhuis, A.R.N.P.'s specialty? ▼
Deanne Bolhuis, A.R.N.P. specializes in Obstetrics & Gynecology Nurse Practitioner and practices in Waterloo, Iowa. Credentials: A.R.N.P..
How much does Deanne Bolhuis, A.R.N.P. prescribe under Medicare Part D? ▼
In 2023, Deanne Bolhuis, A.R.N.P. wrote 204 Medicare Part D claims totaling $14K in drug costs for 71 beneficiaries.
Where is Deanne Bolhuis, A.R.N.P. located? ▼
Deanne Bolhuis, A.R.N.P. is located at 432 KING DR, Waterloo, IA, 50702. Phone: (319) 234-5764.
What is Deanne Bolhuis, A.R.N.P.'s NPI number? ▼
Deanne Bolhuis, A.R.N.P.'s National Provider Identifier (NPI) is 1184622425, issued on 07/11/2005.
Does Deanne Bolhuis, A.R.N.P. prescribe more brand-name or generic drugs? ▼
Deanne Bolhuis, A.R.N.P.'s prescribing is 10% brand-name and 90% generic drugs by claim count, with $4K in brand drug costs.
How many Obstetrics & Gynecology Nurse Practitioner providers are there in the US? ▼
There are 2,867 Obstetrics & Gynecology Nurse Practitioner providers across 52 states in the US. The average Obstetrics & Gynecology Nurse Practitioner provider writes 232 Medicare Part D claims per year.
What drugs does Deanne Bolhuis, A.R.N.P. prescribe most often? ▼
Based on 2023 Medicare Part D data, Deanne Bolhuis, A.R.N.P.'s most frequently prescribed drugs include Estradiol, Valacyclovir, Clobetasol Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Deanne Bolhuis, A.R.N.P. accept Medicare? ▼
Deanne Bolhuis, A.R.N.P. appears in CMS Medicare data with 204 Part D claims and 71 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Deanne Bolhuis, A.R.N.P.'s credentials? ▼
Deanne Bolhuis, A.R.N.P.'s NPI is 1184622425 with credentials A.R.N.P.. 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.