NPI registry status
Active
2026 NPPES data Medical Physician Assistant NPI 1093755886 PAC
Verify on CMS → Aaron Derry, PAC
Medical Physician Assistant in Missoula, Montana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 40,580 in Medical 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.
Prescribing volume
168
Medicare Part D claims · 79 beneficiaries · Medical Physician Assistant avg: 1K
MIPS score
85.4/100
▲ 2 pts above national avg 83.1 · Above neutral
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Aaron Derry, PAC reported a CMS MIPS final score of 85.4/100 - above the 83.1 national average - and filed 168 Medicare Part D claims in 2023.
- 85.4/100
- MIPS score · +2 vs avg
- 168
- Part D claims, 2023
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.
Aaron Derry, PAC's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
85 49th percentile higher than 49% of 477,587 scored providers
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
Where Aaron Derry, PAC sits
This provider among medical physician assistant peers
Across the 7,339 medical physician assistant providers who report both Medicare Part D prescribing and a MIPS quality score, Aaron Derry, PAC writes more Part D claims than 32% of them and scores higher on MIPS quality than 48% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one medical physician assistant peer from a representative sample of 60; the gold marker is Aaron Derry, PAC. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Aaron Derry, PAC?
High performer (top quartile)Primary specialty
Medical Physician Assistant
Medicare Part D claims
168 84% vs specialty avg
MIPS final score
85.4/100 2.3 pts vs avg
Specialty distribution in Montana
How Medical Physician Assistant compares to other specialties among Montana providers
Medicare quality performance, MIPS
Aaron Derry, PAC's 2023 MIPS final score plotted against the Medical Physician Assistant national average
- MIPS Final Score
- 85.4/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Medical Physician Assistant) - 85.4/100 vs national avg 83.1
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).
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.
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%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 85.4/100 for the 2023 performance year (Quality 86, Cost 65.5), compared with the national average of 83.1.
Medical Physician Assistant is a mid-sized specialty nationwide, with 40,580 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
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.
What Aaron Derry, PAC prescribes most
Top Medicare Part D drugs by claim count, 2023
- Doxycycline Hyclate
Doxycycline Hyclate
21 claims
- Cefuroxime
Cefuroxime
17 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
15 claims
- Amoxicillin
Amoxicillin
14 claims
| 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.
40,580
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.
Dr. Sarah Adsit
PA-C
Bozeman, MT
Dr. Jamie Aleba
PA
Great Falls, MT
Dr. Robert Alexander
PA-C
Malmstrom Afb, MT
Dr. Keri Allmacher
PA-C
Missoula, MT
Dr. Aimee Alvord-Brown
PA-C
Billings, MT
Compare Medical Physician Assistant nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Montana medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Medical Physician Assistant peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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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 85.4/100 (Quality: 86, Cost: 65.5). 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 40,580 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
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 (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
Compiled from official public sources by the PlainDoctor editorial team.
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 May 2026.