2026 NPPES data Family Nurse Practitioner NPI 1255799789
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IRIS MACZURA

Family Nurse Practitioner in FLAGSTAFF, Arizona. 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
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)

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)

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 higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 IRIS MACZURA?

Quality data not reported

NPI registry status

Active

Issued 01/28/2016

NPI 1255799789

Primary specialty

Family Nurse Practitioner

High-volume

209,817 US NPIs in this specialty

Medicare Part D claims

169 86% vs specialty avg

2023 prescription claims

Specialty avg: 1,222

Specialty distribution in Arizona

How Family Nurse Practitioner compares to other specialties among Arizona providers

Arizona providers

Family Nurse Practitioner share within Arizona

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

Specialty board-certification context

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

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

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

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

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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MACZURA 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 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. 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.

Family Nurse Practitioner is a high-volume specialty nationwide, with 209,817 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

107 E OAK AVE
FLAGSTAFF, AZ 86001

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%
Specialty average (est.)

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

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
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.

209,817
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.

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

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 209,817 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

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