2026 NPPES data Medical Physician Assistant NPI 1558734368 PA-C
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ELIZABETH ARNOLD, PA-C

Medical Physician Assistant in LOUISVILLE, Kentucky. 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
830
Medicare Part D claims · 479 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.1194/100
▼ 4 pts below national avg 83.1 · [object Object]
Industry payments
$98.35
6 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ELIZABETH ARNOLD, PA-C is a Medical Physician Assistant ([object Object]) practicing in LOUISVILLE, Kentucky with a Medicare Part D prescribing footprint of 830 claims across 479 beneficiaries — 3% brand-name prescribing . Their CMS MIPS Final Score of 79.1194/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $98.35 across 6 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ELIZABETH ARNOLD, PA-C reported a CMS MIPS final score of 79.1194 out of 100, below the 83.1 national average, and filed 830 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

ELIZABETH ARNOLD, PA-C at a glance

Near national average

NPI registry status

Active

Issued 11/03/2015

NPI 1558734368

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

830 23% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

MIPS final score

79.1194/100 3.9805999999999955% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Kentucky

How Medical Physician Assistant compares to other specialties among Kentucky providers

Kentucky providers

Medical Physician Assistant share within Kentucky

1. Medical Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Medical Physician Assistant share within Kentucky

Medicare quality performance — MIPS

ELIZABETH ARNOLD, PA-C's 2023 MIPS final score plotted against the Medical Physician Assistant national average

Near national average
MIPS Final Score
79.1194/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Medical Physician Assistant) — 79.1194/100 vs national avg 83.1

0%100%National avg83%79.1%
MIPS final score (Medical Physician Assistant) — 79.1194/100 vs national avg 83.1

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).

ELIZABETH ARNOLD, PA-C is a Medical Physician Assistant provider practicing in LOUISVILLE, Kentucky, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PA-C. NPI: 1558734368. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

ELIZABETH ARNOLD, PA-C appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA-C credentials at 908 DUPONT RD, LOUISVILLE, KY, 40207, with a listed phone of (502) 749-7909. NPI 1558734368 was issued on 11/03/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ARNOLD 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 830 prescription claims written by this provider, covering 479 Medicare beneficiaries and totaling roughly $9K in drug spend, split 3% brand-name and 97% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 79.1194/100 for the 2023 performance year (Quality 79.524, Cost 44.2327), compared with the national average of 83.1.

Medical Physician Assistant is a mid-sized specialty nationwide, with 40,527 enrolled providers across 55 states and an average of 1,077 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

908 DUPONT RD
LOUISVILLE, KY 40207

Provider Details

NPI 1558734368
Specialty Medical Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 11/03/2015

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

79.1194
Final Score
Avg: 83.1
79.524
Quality
44.2327
Cost
100
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 ELIZABETH ARNOLD, PA-C. Source: openpaymentsdata.cms.gov.

Total received

$98

Largest payer

PFIZER 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

ELIZABETH ARNOLD, PA-C — brand share 3.0%
Specialty average (est.)

3% brand-name claims vs 97% generic, on 830 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.

830
Total Claims
$9K
Total Drug Cost
479
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
853
Total Day Supply
8,610
Brand vs Generic
3% brand / 97% generic
Brand Drug Cost
$1K
Generic Drug Cost
$8K
Antibiotic Claims
382

Patient Demographics

Average Patient Age
70.6 years
Avg HCC Risk Score
1.07
Gender Split
63% female / 37% male
Age Distribution
<65: 78, 65-74: 233, 75-84: 135, 85+: 33

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Prednisone
155
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
135
Doxycycline Monohydrate
75
Methylprednisolone
59
Ciprofloxacin Hcl
43
Fluticasone Propionate
30
Mupirocin
28
Cephalexin
24
Fluconazole
24
Cefdinir
23

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Medical Physician Assistant Overview

How ELIZABETH ARNOLD, PA-C fits within the Medical Physician Assistant landscape nationally.

40,527
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider

ELIZABETH ARNOLD, PA-C's 830 claims are below the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Kentucky

Other clinicians with the same primary specialty enrolled in Kentucky, drawn from the same CMS NPPES roster as ARNOLD.

Compare Medical Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is ELIZABETH ARNOLD, PA-C's specialty?
ELIZABETH ARNOLD, PA-C specializes in Medical Physician Assistant and practices in LOUISVILLE, Kentucky. Credentials: PA-C.
How much does ELIZABETH ARNOLD, PA-C prescribe under Medicare Part D?
In 2023, ELIZABETH ARNOLD, PA-C wrote 830 Medicare Part D claims totaling $9K in drug costs for 479 beneficiaries.
What is ELIZABETH ARNOLD, PA-C's Medicare quality score?
ELIZABETH ARNOLD, PA-C has a CMS MIPS Final Score of 79.1194/100 (Quality: 79.524, Cost: 44.2327). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is ELIZABETH ARNOLD, PA-C located?
ELIZABETH ARNOLD, PA-C is located at 908 DUPONT RD, LOUISVILLE, KY, 40207. Phone: (502) 749-7909.
What is ELIZABETH ARNOLD, PA-C's NPI number?
ELIZABETH ARNOLD, PA-C's National Provider Identifier (NPI) is 1558734368, issued on 11/03/2015.
Does ELIZABETH ARNOLD, PA-C prescribe more brand-name or generic drugs?
ELIZABETH ARNOLD, PA-C's prescribing is 3% brand-name and 97% generic drugs by claim count, with $1K in brand drug costs.
How many Medical Physician Assistant providers are there in the US?
There are 40,527 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does ELIZABETH ARNOLD, PA-C prescribe most often?
Based on 2023 Medicare Part D data, ELIZABETH ARNOLD, PA-C's most frequently prescribed drugs include Prednisone, Amoxicillin-Clavulanate Potass, Doxycycline Monohydrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ELIZABETH ARNOLD, PA-C accept Medicare?
ELIZABETH ARNOLD, PA-C appears in CMS Medicare data with 830 Part D claims and 479 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ELIZABETH ARNOLD, PA-C's credentials?
ELIZABETH ARNOLD, PA-C's NPI is 1558734368 with credentials PA-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

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.
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 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