Aaron Zirk, D.O.
Emergency Medicine Physician · Naperville, IL
Aaron Zirk, D.O. is an emergency medicine physician with a practice address in Naperville, Illinois, and NPI 1386917268, issued on Feb 22, 2012. Check the license (Illinois 036.136027, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Aaron Zirk
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 036.136027 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1041 Royal Saint George Dr, Naperville, IL 60563
- Phone
- (773) 791-2478
- Enumerated
- Feb 22, 2012
- Record last updated
- Jul 19, 2024
- Medicare enrollment
- Enrolled (PECOS I20150313001459); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Verify Aaron Zirk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036.136027Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% more Medicare Part D claims than the average emergency medicine physician in 2024
347 Medicare Part D claims for 242 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims. 52 claims were for opioids.
Most prescribed
- Cephalexin47 claims
- Prednisone38 claims
- Ondansetron Odt30 claims
- Hydrocodone-Acetaminophen27 claims
- Tramadol Hcl25 claims
- Amoxicillin-Clavulanate Potass21 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 MIPS final score for 2023 (Medicare payment program): 91.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
2 hospitals and group practices
- Sarah Bush Lincoln Health CenterMattoon, IL · Acute Care Hospitals3 of 5 stars
- Northwestern Medical Faculty FoundationDekalb, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Aaron Zirk among 3,291 emergency medicine physician records in Illinois
Aaron Zirk, D.O. is one of 3,291 emergency medicine physician records with a practice address in Illinois. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 53% of them.
- NPI issued2012 · 53% of these records are older, 44% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2012 · median 2012 among the 1,867 with a school on file
- Record last updated2024 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
59 emergency medicine physician records list a practice address in Naperville
They are 59 of the 4,634 NPPES records with a practice address in Naperville, and 3,291 emergency medicine physician records in Illinois.
All 3,291 in Illinois → Every provider in Naperville → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Samuel Elberts, MDNaperville, IL 605631386207504
- David Han, MDNaperville, IL 605631073179388
- Mohamed Jabri, MDNaperville, IL 605631013026004
- Richard Joseph, MDNaperville, IL 605631982818571
- Rajeev Kalsi, M.D.Naperville, IL 605631447464292
- Jordan Moskoff, MDNaperville, IL 605641033228879
- Muhammad Awan, MDWestmont, IL 605591255428538
- Lloyd Burns, D.O.Westmont, IL 605591639411564
Common questions
What is Aaron Zirk, D.O.'s NPI number?
Aaron Zirk, D.O.'s National Provider Identifier (NPI) is 1386917268, issued on Feb 22, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Zirk, D.O. located?
The NPPES record lists a practice address at 1041 Royal Saint George Dr, Naperville, IL, 60563. Phone: (773) 791-2478. Providers update this record themselves, so call before visiting.
How can I verify Aaron Zirk, D.O.'s license?
NPPES lists Illinois license number 036.136027, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Aaron Zirk, D.O. prescribe under Medicare Part D?
In 2024, Aaron Zirk, D.O. had 347 Medicare Part D claims for 242 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Aaron Zirk, D.O.'s MIPS final score?
The 2023 MIPS final score is 91.8 of 100. 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.