Aaron J. Derry, PAC
Physician Assistant · Missoula, MT
Aaron J. Derry, PAC is a physician assistant with a practice address in Missoula, Montana, and NPI 1093755886, issued on Jun 8, 2006. Check the license (Montana MED-PAC-LIC-402, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Aaron J. Derry
- Credential
- PAC
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- MED-PAC-LIC-402 MT
402 MT
Self-reported in NPPES; status is on the state search - Practice location
- 500 West Broadway, Missoula, MT 59802
- Phone
- (406) 721-5600
- Enumerated
- Jun 8, 2006
- Record last updated
- May 24, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (406) 721-3907
- Medicaid ID
- 4304287 MT
- Medicare enrollment
- Enrolled (PECOS I20041123001058); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 698 in Montana → Look up another NPI →
Also registered at 500 West Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Elaine Carmichael, PTPhysical Therapist1952342941
- Joshua Christensen, MDInfectious Disease Physician1316093917
- Ann Corsi, MDRheumatology Physician1568418630
Verify Aaron J. Derry in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license MED-PAC-LIC-402Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average physician assistant in 2024
198 Medicare Part D claims for 84 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 17 claims were for opioids.
Most prescribed
- Cefadroxil21 claims
- Cefuroxime18 claims
- Doxycycline Hyclate17 claims
- Oxycodone Hcl14 claims
- Amoxicillin-Clavulanate Potass12 claims
- Levofloxacin12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 85.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Providence Health And Services MtMissoula, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron J. Derry among 698 physician assistant records in Montana
Aaron J. Derry, PAC is one of 698 physician assistant records with a practice address in Montana. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 77% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2004 · median 2016 among the 514 with a school on file
- Record last updated2021 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
119 physician assistant records list a practice address in Missoula
They are 119 of the 3,567 NPPES records with a practice address in Missoula, and 698 physician assistant records in Montana.
All 698 in Montana → Every provider in Missoula → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Roger Barrey, PACMissoula, MT 598021720020357
- Michael Beckel, PA-CMissoula, MT 598021477592236
- Kenneth Bogart, PAMissoula, MT 598021770520058
- Greg Bourdon, P.A.Missoula, MT 598021154365914
- Jenifer Caldwell, PA CMissoula, MT 598021316933963
- Karin Johns, PA-CMissoula, MT 598021841228020
- Gloria KornishMissoula, MT 598021659431070
- Jamie Lilly, PAMissoula, MT 598021922168517
Common questions
What is Aaron J. Derry, PAC's NPI number?
Aaron J. Derry, PAC's National Provider Identifier (NPI) is 1093755886, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Aaron J. Derry, PAC located?
The NPPES record lists a practice address at 500 West Broadway, Missoula, MT, 59802. Phone: (406) 721-5600. Providers update this record themselves, so call before visiting.
How can I verify Aaron J. Derry, PAC's license?
NPPES lists Montana license number MED-PAC-LIC-402, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.
How much does Aaron J. Derry, PAC prescribe under Medicare Part D?
In 2024, Aaron J. Derry, PAC had 198 Medicare Part D claims for 84 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Aaron J. Derry, PAC's MIPS final score?
The 2023 MIPS final score is 85.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.