2026 NPPES data Medical Physician Assistant NPI 1093755886 PAC
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AARON DERRY, PAC

Medical Physician Assistant in MISSOULA, Montana. 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 · 79 beneficiaries · Medical Physician Assistant avg: 1K
MIPS score
85.4319/100
▲ 2 pts above national avg 83.1 · [object Object]
What the federal data reveals: AARON DERRY, PAC is a Medical Physician Assistant ([object Object]) practicing in MISSOULA, Montana with a Medicare Part D prescribing footprint of 168 claims across 79 beneficiaries . Their CMS MIPS Final Score of 85.4319/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: AARON DERRY, PAC reported a CMS MIPS final score of 85.4319 out of 100, above the 83.1 national average, and filed 168 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

AARON DERRY, PAC at a glance

High performer (top quartile)

NPI registry status

Active

Issued 06/08/2006

NPI 1093755886

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

168 84% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

MIPS final score

85.4319/100 2.3319000000000045% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Montana

How Medical Physician Assistant compares to other specialties among Montana providers

Montana providers

Medical Physician Assistant share within Montana

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

Medicare quality performance — MIPS

AARON DERRY, PAC's 2023 MIPS final score plotted against the Medical Physician Assistant national average

High performer (top quartile)
MIPS Final Score
85.4319/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Medical Physician Assistant) — 85.4319/100 vs national avg 83.1

0%100%National avg83%85.4%
MIPS final score (Medical Physician Assistant) — 85.4319/100 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).

AARON DERRY, PAC is a Medical Physician Assistant provider practicing in MISSOULA, Montana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PAC. NPI: 1093755886. 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.

AARON DERRY, PAC appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PAC credentials at 500 WEST BROADWAY, MISSOULA, MT, 59802, with a listed phone of (406) 721-5600. NPI 1093755886 was issued on 06/08/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DERRY 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 79 Medicare beneficiaries and totaling roughly $13K in drug spend, with an opioid prescribing rate of 7.7%. 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 85.4319/100 for the 2023 performance year (Quality 85.9823, Cost 65.4573), 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

500 WEST BROADWAY
MISSOULA, MT 59802

Provider Details

NPI 1093755886
Specialty Medical Physician Assistant
Credentials PAC
Gender Male
NPI Issued 06/08/2006

CMS Quality Score (MIPS)

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

85.4319
Final Score
Avg: 83.1
85.9823
Quality
65.4573
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where AARON DERRY, PAC 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.

PROVIDENCE HEALTH AND SERVICES MT
MISSOULA, MT

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

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

168
Total Claims
$13K
Total Drug Cost
79
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
179
Total Day Supply
2,998
Generic Drug Cost
$3K
Opioid Claims
13 (7.7% rate)
Antibiotic Claims
92

Patient Demographics

Average Patient Age
69.4 years
Avg HCC Risk Score
2.75
Gender Split
32% female / 68% male
Age Distribution
<65: 22, 65-74: 31, 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
Doxycycline Hyclate
21
Cefuroxime
Cefuroxime Axetil
17
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
15
Amoxicillin
14

* 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 AARON DERRY, PAC 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

AARON DERRY, PAC's 168 claims are below the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Montana

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

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

Frequently Asked Questions

What is AARON DERRY, PAC's specialty?
AARON DERRY, PAC specializes in Medical Physician Assistant and practices in MISSOULA, Montana. Credentials: PAC.
How much does AARON DERRY, PAC prescribe under Medicare Part D?
In 2023, AARON DERRY, PAC wrote 168 Medicare Part D claims totaling $13K in drug costs for 79 beneficiaries.
What is AARON DERRY, PAC's Medicare quality score?
AARON DERRY, PAC has a CMS MIPS Final Score of 85.4319/100 (Quality: 85.9823, Cost: 65.4573). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is AARON DERRY, PAC located?
AARON DERRY, PAC is located at 500 WEST BROADWAY, MISSOULA, MT, 59802. Phone: (406) 721-5600.
What is AARON DERRY, PAC's NPI number?
AARON DERRY, PAC's National Provider Identifier (NPI) is 1093755886, issued on 06/08/2006.
Does AARON DERRY, PAC prescribe opioids?
Yes, AARON DERRY, PAC had 13 opioid claims in 2023 with an opioid prescribing rate of 7.7%.
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 AARON DERRY, PAC prescribe most often?
Based on 2023 Medicare Part D data, AARON DERRY, PAC's most frequently prescribed drugs include Doxycycline Hyclate, Cefuroxime, Amoxicillin-Clavulanate Potass. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AARON DERRY, PAC accept Medicare?
AARON DERRY, PAC appears in CMS Medicare data with 168 Part D claims and 79 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AARON DERRY, PAC's credentials?
AARON DERRY, PAC's NPI is 1093755886 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

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