Mackenzie Anne O'Connor
Otolaryngology Physician · Chicago, IL
Mackenzie Anne O'Connor is an otolaryngology physician with a practice address in Chicago, Illinois, and NPI 1801421516, issued on Mar 3, 2020. Check the license (Illinois 036-180602, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mackenzie Anne O'Connor
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- 036-180602 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1611 W Harrison St Ste 550, Chicago, IL 60612
- Phone
- (312) 942-6100
- Enumerated
- Mar 3, 2020
- Record last updated
- Jun 22, 2026
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 482 in Illinois → Look up another NPI →
Also registered at 1611 W Harrison St Ste 550
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Michael Eggerstedt, MDOtolaryngology/Facial Plastic Surgery Physician1699129858
Verify Mackenzie Anne O'Connor 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 036-180602Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average otolaryngology physician in 2024
55 Medicare Part D claims for 32 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D.
Most prescribed
- Fluticasone Propionate15 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.
Mackenzie Anne O'Connor among 482 otolaryngology physician records in Illinois
Mackenzie Anne O'Connor is one of 482 otolaryngology physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 83% of them.
- NPI issued2020 · 83% of these records are older, 13% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2026 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Illinois
There are 482 otolaryngology physician records in Illinois.
All 482 in Illinois → Every provider in Chicago → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Sukhpreet Batra, M.D.Chicago, IL 606121780648998
- David Caldarelli, MDChicago, IL 606121285767020
- Stephanie Joe, M.D.Chicago, IL 606121477564490
- Paul Jones, M.D.Chicago, IL 606121417956509
- Phillip LosavioChicago, IL 606121124232137
- Sarah McDonald, MDChicago, IL 606121376573477
- Thomas Nielsen, M.D.Chicago, IL 606121235138546
- William Panje, MDChicago, IL 606121174523591
Common questions
What is Mackenzie Anne O'Connor's NPI number?
Mackenzie Anne O'Connor's National Provider Identifier (NPI) is 1801421516, issued on Mar 3, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Mackenzie Anne O'Connor located?
The NPPES record lists a practice address at 1611 W Harrison St Ste 550, Chicago, IL, 60612. Phone: (312) 942-6100. Providers update this record themselves, so call before visiting.
How can I verify Mackenzie Anne O'Connor's license?
NPPES lists Illinois license number 036-180602, 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 Mackenzie Anne O'Connor prescribe under Medicare Part D?
In 2024, Mackenzie Anne O'Connor had 55 Medicare Part D claims for 32 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
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.