NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1255799789
Verify on CMS → Iris Maczura
Family Nurse Practitioner in Flagstaff, Arizona.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 210,832 in Family 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
169
Medicare Part D claims · 84 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$443.42
9 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Iris Maczura filed 169 Medicare Part D claims in 2023 as a Family Nurse Practitioner in Flagstaff, Arizona, prescribing 92% generic.
- 169
- Part D claims, 2023
- 92%
- generic prescribing
- $443.42
- industry payments (Sunshine Act)
- ≥35th
- pct by Part D claim volume (lower-bound band)
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.
Iris Maczura's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
169 ≥ 35th percentile 35% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Iris Maczura?
Quality data not reportedPrimary specialty
Family Nurse Practitioner
Medicare Part D claims
169 86% vs specialty avg
Specialty distribution in Arizona
How Family Nurse Practitioner compares to other specialties among Arizona 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 Family 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).
Iris Maczura appears in the CMS NPPES registry as a Family Nurse Practitioner provider at 107 E OAK AVE, Flagstaff, AZ, 86001, with a listed phone of (928) 913-8800. NPI 1255799789 was issued on 01/28/2016.
Medicare Part D records for calendar year 2023 show 169 prescription claims written by this provider, covering 84 Medicare beneficiaries and totaling roughly $5K in drug spend, split 8% brand-name and 92% generic by claim count.
Family Nurse Practitioner is a high-volume specialty nationwide, with 210,832 enrolled providers across 56 states and an average of 1,222 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 | 1255799789 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Gender | Female |
| NPI Issued | 01/28/2016 |
Hospital and facility affiliations
Facilities where Iris Maczura 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.
Northern Arizona Healthcare Corporation
Flagstaff, AZ
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 Iris Maczura. Source: openpaymentsdata.cms.gov.
Total received
$443
Largest payer
AERIN MEDICAL INC.
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 · Generic-heavy
Iris Maczura - brand share 8.0%
Family Nurse Practitioner average
8% brand-name claims vs 92% generic, on 169 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.
169
Total Claims
$5K
Total Drug Cost
84
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 205
- Total Day Supply
- 4,019
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $2K
- Generic Drug Cost
- $4K
- Antibiotic Claims
- 42
Patient Demographics
- Average Patient Age
- 70.4 years
- Avg HCC Risk Score
- 0.89
- Gender Split
- 61% female / 39% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Iris Maczura prescribes most
Top Medicare Part D drugs by claim count, 2023
- Famotidine
Famotidine
19 claims
- Methylprednisolone
Methylprednisolone
16 claims
- Prednisone
Prednisone
15 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
14 claims
- Azithromycin
Azithromycin
14 claims
- Omeprazole
Omeprazole
14 claims
- Montelukast Sodium
Montelukast Sodium
13 claims
- Ofloxacin
Ofloxacin
12 claims
| Drug | Claims |
|---|---|
| Famotidine | 19 |
| Methylprednisolone | 16 |
| Prednisone | 15 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 14 |
| Azithromycin | 14 |
| Omeprazole | 14 |
| Montelukast Sodium | 13 |
| Ofloxacin | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Nurse Practitioner Overview
How Iris Maczura fits within the Family Nurse Practitioner landscape nationally.
210,832
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider
Iris Maczura's 169 claims are below the specialty average of 1,222.
Nearby Family Nurse Practitioner Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Maczura.
Dr. Sharla Abalos
NP
Tucson, AZ
Dr. Kristian Abarca
DNP, FNP
Willcox, AZ
Dr. Rosa Abarca
FNP-BC, FNP-C
Yuma, AZ
Dorothy Abbey
Phoenix, AZ
Dr. Lamia Abdouni
PMHNP
Chandler, AZ
Compare Family 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 Arizona medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Family 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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Medical Specialties Explained
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Explore Arizona
Frequently Asked Questions
What is Iris Maczura's specialty? ▼
Iris Maczura specializes in Family Nurse Practitioner and practices in Flagstaff, Arizona.
How much does Iris Maczura prescribe under Medicare Part D? ▼
In 2023, Iris Maczura wrote 169 Medicare Part D claims totaling $5K in drug costs for 84 beneficiaries.
Where is Iris Maczura located? ▼
Iris Maczura is located at 107 E OAK AVE, Flagstaff, AZ, 86001. Phone: (928) 913-8800.
What is Iris Maczura's NPI number? ▼
Iris Maczura's National Provider Identifier (NPI) is 1255799789, issued on 01/28/2016.
Does Iris Maczura prescribe more brand-name or generic drugs? ▼
Iris Maczura's prescribing is 8% brand-name and 92% generic drugs by claim count, with $2K in brand drug costs.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 210,832 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does Iris Maczura prescribe most often? ▼
Based on 2023 Medicare Part D data, Iris Maczura's most frequently prescribed drugs include Famotidine, Methylprednisolone, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Iris Maczura accept Medicare? ▼
Iris Maczura appears in CMS Medicare data with 169 Part D claims and 84 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Iris Maczura's credentials? ▼
Iris Maczura's NPI is 1255799789. 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
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.