NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1780653097 PAC
Verify on CMS → Barbara Arnzen, PAC
Physician Assistant in Lewiston, Idaho.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 156,084 in Physician Assistant, 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.
MIPS score
51/100
▼ 33 pts below national avg 83.5 · Mid-tier
Industry payments
$59.88
3 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Barbara Arnzen, PAC reported a CMS MIPS final score of 51/100 - below the 83.5 national average.
- 51/100
- MIPS score · -33 vs avg
- $59.88
- industry payments (Sunshine Act)
- ≥5th
- 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 Barbara Arnzen, PAC
Federal records show an active NPI with a CMS quality score on file — objective federal reporting, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1780653097), first enumerated 03/17/2006.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 51/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Industry payment transparency
$59.88 in reported industry payments (3 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 1780653097 · Physician Assistant
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-LOW · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1780653097
- ENUM-LEGACY 2006
- TAX-MEGA 156K Physician Assistant
- MIPS-LOW 51/100
- BOOK-LIGHT 1,155 in Idaho
- PHOTO-FINISH Gianna Rafetto, PA-C · ±0.1
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Gianna Rafetto, …
Gianna Rafetto, PA-C
50.9 MIPS pts
- Michael Nicholas…
Michael Nicholas, PA
50.9 MIPS pts
- Donald Scott, PA…
Donald Scott, PA
50.9 MIPS pts
- Arnzen · this pr…
Arnzen · this provider
51 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Barbara Arnzen, PAC'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.
51 ≥ 5th percentile 5% 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
What does the federal data show about Barbara Arnzen, PAC?
Below national averagePrimary specialty
Physician Assistant
MIPS final score
51/100 32.5 pts vs avg
Specialty distribution in Idaho
How Physician Assistant compares to other specialties among Idaho providers
Medicare quality performance, MIPS
Barbara Arnzen, PAC's 2023 MIPS final score plotted against the Physician Assistant national average
- MIPS Final Score
- 51/100
- 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 | 1780653097 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PAC |
| Gender | Female |
| NPI Issued | 03/17/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
50.9638
Final Score
Measured-score avg: 83.5
46.2833
Quality
73.5959
Cost
0
Promoting Interoperability
Reporting: Group practice
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 Barbara Arnzen, PAC. Source: openpaymentsdata.cms.gov.
Total received
$60
Largest payer
Novo Nordisk 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.
Physician Assistant Overview
How Barbara Arnzen, PAC fits within the Physician Assistant landscape nationally.
156,084
Physician Assistant Providers in US
56
States with Physician Assistant
832
Avg Claims per Provider
Nationwide Physician Assistant peers with similar MIPS or enrollment year
Two federal-record peer sets for Arnzen, both outside Idaho so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (51 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Physician Assistant Providers in Idaho
Other clinicians with the same primary specialty enrolled in Idaho, drawn from the same CMS NPPES roster as Arnzen.
One of 1,155 Physician Assistant providers enrolled in Idaho, 5 are shown here.
Hodaka Abe
PA
Caldwell, ID
Patrick Abel
Twin Falls, ID
Mark Ackerman
PAC
Orofino, ID
Alan Adams
PA-C
Idaho Falls, ID
Jessica Adams
PA-C
Coeur D Alene, ID
Compare Physician Assistant nationally: see state-by-state distribution →
Frequently Asked Questions
What is Barbara Arnzen, PAC's specialty? ▼
Barbara Arnzen, PAC specializes in Physician Assistant and practices in Lewiston, Idaho. Credentials: PAC.
What is Barbara Arnzen, PAC's Medicare quality score? ▼
Barbara Arnzen, PAC has a CMS MIPS Final Score of 51/100 (Quality: 46.3, Cost: 73.6). 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 Barbara Arnzen, PAC located? ▼
Barbara Arnzen, PAC is located at 2315 8TH ST, Lewiston, ID, 83501. Phone: (208) 746-1383.
What is Barbara Arnzen, PAC's NPI number? ▼
Barbara Arnzen, PAC's National Provider Identifier (NPI) is 1780653097, issued on 03/17/2006.
How many Physician Assistant providers are there in the US? ▼
There are 156,084 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 832 Medicare Part D claims per year.
Does Barbara Arnzen, PAC accept Medicare? ▼
Barbara Arnzen, PAC appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Barbara Arnzen, PAC's credentials? ▼
Barbara Arnzen, PAC's NPI is 1780653097 with credentials PAC. 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.
- 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.