NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1205178738 FNP-C
Verify on CMS → William Holder, FNP-C
Family Nurse Practitioner in Mesa, 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 216,959 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
160
Medicare Part D claims · 81 beneficiaries · Family Nurse Practitioner avg: 1K
MIPS score
38.3/100
▼ 45 pts below national avg 83.5 · Below average
Industry payments
$387.17
8 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
William Holder, FNP-C reported a CMS MIPS final score of 38.3/100 - below the 83.5 national average - and filed 160 Medicare Part D claims in 2024.
- 38.3/100
- MIPS score · -45 vs avg
- 160
- Part D claims, 2024
- $387.17
- industry payments (Sunshine Act)
- ≥4th
- pct among measured MIPS (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.
Federal trust snapshot
What official records show about William Holder, FNP-C
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1205178738), first enumerated 03/22/2013.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 160 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 38.3/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$387.17 in reported industry payments (8 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1205178738 · Family Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MEGA · MIPS-LOW · RX-LIGHT · BOOK-MID · PHOTO-FINISH
- NPI-10 1205178738
- ENUM-MID 2013
- TAX-MEGA 217K Family Nurse
- MIPS-LOW 38.3/100
- RX-LIGHT 160
- BOOK-MID 5,394 in Arizona
- PHOTO-FINISH Jodi Bauer · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Holder · this pr…
Holder · this provider
38.3 MIPS pts
- Sherry Huisman ·…
Sherry Huisman
38.3 MIPS pts
- Jodi Bauer · near
Jodi Bauer
38.3 MIPS pts
- Brigid Heckel · …
Brigid Heckel
38.3 MIPS pts
- Michelle Hinton …
Michelle Hinton
38.3 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
William Holder, FNP-C's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
38 ≥ 4th percentile 4% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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 whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where William Holder, FNP-C sits
This provider among family nurse practitioner peers
Across the 26,556 family nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, William Holder, FNP-C writes more Part D claims than 30% of them and scores higher on MIPS quality than 2% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one family nurse practitioner peer from a representative sample of 60; the gold marker is William Holder, FNP-C. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about William Holder, FNP-C?
Below national averagePrimary specialty
Family Nurse Practitioner
Medicare Part D claims
160 88% vs specialty avg
MIPS final score
38.3/100 45.2 pts vs avg
Specialty distribution in Arizona
How Family Nurse Practitioner compares to other specialties among Arizona providers
Medicare quality performance, MIPS
William Holder, FNP-C's 2023 MIPS final score plotted against the Family Nurse Practitioner national average
- MIPS Final Score
- 38.3/100
- vs 83.5 national avg · 2023 performance year
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).
Practice Address
Provider Details
| NPI | 1205178738 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | FNP-C |
| Gender | Male |
| NPI Issued | 03/22/2013 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
38.3115
Final Score
Measured-score avg: 83.5
25.3293
Quality
56.2679
Cost
Reporting: Group practice
Hospital and facility affiliations
Facilities where William Holder, FNP-C 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.
Yuma Regional Medical Center
★★☆☆☆ 2/5
Yuma, AZ
Acute Care Hospitals
CMS CCN: 030013
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 William Holder, FNP-C. Source: openpaymentsdata.cms.gov.
Total received
$387
Largest payer
Actelion Pharmaceuticals US, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
160
Total Claims
$16K
Total Drug Cost
81
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 296.4
- Total Day Supply
- 8,652
- Generic Drug Cost
- $3K
Patient Demographics
- Average Patient Age
- 72.5 years
- Avg HCC Risk Score
- 1.42
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 13, 65-74: N/A, 75-84: 34, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What William Holder, FNP-C prescribes most
Top Medicare Part D drugs by claim count, 2024
- Donepezil Hcl
Donepezil Hcl
21 claims
- Carbidopa-Levodopa
Carbidopa-Levodopa
16 claims
- Atorvastatin Calcium
Atorvastatin Calcium
14 claims
- Levetiracetam
Levetiracetam
14 claims
| Drug | Claims |
|---|---|
| Donepezil Hcl | 21 |
| Carbidopa-Levodopa Carbidopa/Levodopa | 16 |
| Atorvastatin Calcium | 14 |
| Levetiracetam | 14 |
* 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 William Holder, FNP-C fits within the Family Nurse Practitioner landscape nationally.
216,959
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,302
Avg Claims per Provider
William Holder, FNP-C's 160 claims are below the specialty average of 1,302.
Nationwide Family Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Holder, both outside Arizona so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (38.3 here).
Same NPPES enumeration year (2013)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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 Holder.
One of 5,394 Family Nurse Practitioner providers enrolled in Arizona, 5 are shown here.
Sharla Abalos
NP
Tucson, AZ
Dr. Kristian Abarca
DNP, FNP
Willcox, AZ
Rosa Abarca
FNP-BC, FNP-C
Yuma, AZ
Dorothy Abbey
Phoenix, AZ
Brady Abbott
Taylor, AZ
Compare Family Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is William Holder, FNP-C's specialty? ▼
William Holder, FNP-C specializes in Family Nurse Practitioner and practices in Mesa, Arizona. Credentials: FNP-C.
How much does William Holder, FNP-C prescribe under Medicare Part D? ▼
In 2024, William Holder, FNP-C wrote 160 Medicare Part D claims totaling $16K in drug costs for 81 beneficiaries.
What is William Holder, FNP-C's Medicare quality score? ▼
William Holder, FNP-C has a CMS MIPS Final Score of 38.3/100 (Quality: 25.3, Cost: 56.3). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is William Holder, FNP-C located? ▼
William Holder, FNP-C is located at 1919 E MCKELLIPS RD STE 103, Mesa, AZ, 85203. Phone: (480) 961-2365.
What is William Holder, FNP-C's NPI number? ▼
William Holder, FNP-C's National Provider Identifier (NPI) is 1205178738, issued on 03/22/2013.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 216,959 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,302 Medicare Part D claims per year.
What drugs does William Holder, FNP-C prescribe most often? ▼
Based on 2024 Medicare Part D data, William Holder, FNP-C's most frequently prescribed drugs include Donepezil Hcl, Carbidopa-Levodopa, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Holder, FNP-C accept Medicare? ▼
William Holder, FNP-C appears in CMS Medicare data with 160 Part D claims and 81 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Holder, FNP-C's credentials? ▼
William Holder, FNP-C's NPI is 1205178738 with credentials FNP-C. 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 (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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 August 2026 (NPPES) / 2024 (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 August 2026.