2026 NPPES data Physician Assistant NPI 1588684229 PA
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MARSHA ARTHUR, PA

Physician Assistant in WARREN, Michigan. 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
168
Medicare Part D claims · 115 beneficiaries · Physician Assistant avg: 790
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
80.5931/100
▼ 3 pts below national avg 83.1 · [object Object]

What the federal data shows

MARSHA ARTHUR, PA reported a CMS MIPS final score of 80.5931/100 — below the 83.1 national average — and filed 168 Medicare Part D claims in 2023.

80.5931/100
MIPS score · -3 vs avg
168
Part D claims, 2023
92%
generic prescribing

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.

MARSHA ARTHUR, PA's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

81 33rd percentile higher than 33% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored 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.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

What does the federal data show about MARSHA ARTHUR, PA?

Near national average

NPI registry status

Active

Issued 07/19/2006

NPI 1588684229

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

168 79% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

80.5931/100 2.5068999999999875% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Michigan

How Physician Assistant compares to other specialties among Michigan providers

Michigan providers

Physician Assistant share within Michigan

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

Medicare quality performance — MIPS

MARSHA ARTHUR, PA's 2023 MIPS final score plotted against the Physician Assistant national average

Near national average
MIPS Final Score
80.5931/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 80.5931/100 vs national avg 83.1

0%100%National avg83%80.6%
MIPS final score (Physician Assistant) — 80.5931/100 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).

MARSHA ARTHUR, PA is a Physician Assistant provider practicing in WARREN, Michigan, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PA. NPI: 1588684229. 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.

MARSHA ARTHUR, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 28800 RYAN RD, WARREN, MI, 48092, with a listed phone of (586) 575-9444. NPI 1588684229 was issued on 07/19/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ARTHUR 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 168 prescription claims written by this provider, covering 115 Medicare beneficiaries and totaling roughly $10K in drug spend, split 8% brand-name and 92% generic by claim count, with an opioid prescribing rate of 64.3%. 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 80.5931/100 for the 2023 performance year (Quality 53.5515, Cost 52.0303), compared with the national average of 83.1.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

28800 RYAN RD
WARREN, MI 48092

Provider Details

NPI 1588684229
Specialty Physician Assistant
Credentials PA
Gender Female
NPI Issued 07/19/2006

CMS Quality Score (MIPS)

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

80.5931
Final Score
Avg: 83.1
53.5515
Quality
52.0303
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where MARSHA ARTHUR, PA 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.

VHS PHYSICIANS OF MICHIGAN
DETROIT, MI

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context — Michigan MI-BOM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~41K Michigan medical licensees in 2023 — they are NOT specific to MARSHA ARTHUR, PA. To verify MARSHA ARTHUR, PA's current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases

MI-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

MARSHA ARTHUR, PA — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 168 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.

168
Total Claims
$10K
Total Drug Cost
115
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
168
Total Day Supply
1,366
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$7K
Generic Drug Cost
$2K
Opioid Claims
108 (64.3% rate)
Antibiotic Claims
25

Patient Demographics

Average Patient Age
68.7 years
Avg HCC Risk Score
1.46
Gender Split
67% female / 33% male
Age Distribution
<65: 23, 65-74: 74, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
63
Oxycodone Hcl
36
Eliquis
Apixaban
13

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

Physician Assistant Overview

How MARSHA ARTHUR, PA fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

MARSHA ARTHUR, PA's 168 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Michigan

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

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

Frequently Asked Questions

What is MARSHA ARTHUR, PA's specialty?
MARSHA ARTHUR, PA specializes in Physician Assistant and practices in WARREN, Michigan. Credentials: PA.
How much does MARSHA ARTHUR, PA prescribe under Medicare Part D?
In 2023, MARSHA ARTHUR, PA wrote 168 Medicare Part D claims totaling $10K in drug costs for 115 beneficiaries.
What is MARSHA ARTHUR, PA's Medicare quality score?
MARSHA ARTHUR, PA has a CMS MIPS Final Score of 80.5931/100 (Quality: 53.5515, Cost: 52.0303). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is MARSHA ARTHUR, PA located?
MARSHA ARTHUR, PA is located at 28800 RYAN RD, WARREN, MI, 48092. Phone: (586) 575-9444.
What is MARSHA ARTHUR, PA's NPI number?
MARSHA ARTHUR, PA's National Provider Identifier (NPI) is 1588684229, issued on 07/19/2006.
Does MARSHA ARTHUR, PA prescribe more brand-name or generic drugs?
MARSHA ARTHUR, PA's prescribing is 8% brand-name and 92% generic drugs by claim count, with $7K in brand drug costs.
Does MARSHA ARTHUR, PA prescribe opioids?
Yes, MARSHA ARTHUR, PA had 108 opioid claims in 2023 with an opioid prescribing rate of 64.3%.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does MARSHA ARTHUR, PA prescribe most often?
Based on 2023 Medicare Part D data, MARSHA ARTHUR, PA's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Oxycodone Hcl, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARSHA ARTHUR, PA accept Medicare?
MARSHA ARTHUR, PA appears in CMS Medicare data with 168 Part D claims and 115 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARSHA ARTHUR, PA's credentials?
MARSHA ARTHUR, PA's NPI is 1588684229 with credentials PA. 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