Aaron J. Clark, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Chicago, IL
Aaron J. Clark, MD is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Chicago, Illinois, and NPI 1245791797, issued on Mar 27, 2019. Check the license (Illinois 036175284, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Aaron J. Clark
- Credential
- MD
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License numbers
- 036175284 IL
125.073748 IL
Self-reported in NPPES; status is on the state search - Practice location
- 675 N Saint Clair St Ste 19-100, Chicago, IL 60611
- Phone
- (312) 664-3278
- Enumerated
- Mar 27, 2019
- Record last updated
- Jul 3, 2025
- Fax
- (312) 695-5774
- Medicare enrollment
- Enrolled (PECOS I20250714003935); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 265 in Illinois → Look up another NPI →
Also registered at 675 N Saint Clair St Ste 19-100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nausheen Akhter, MDCardiovascular Disease Physician1134393812
- Amy Anthony, LCSWClinical Social Worker1518482074
- Samantha Arner, APRN, CNPNurse Practitioner1609696590
- Anita Asgar, MDInterventional Cardiology Physician1588481022
- Holly Bajramovic, PA-CPhysician Assistant1548898026
- Emily Balmes, APRN, CNPNurse Practitioner1295455285
Verify Aaron J. Clark 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 036175284Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $1,857.82
18 payments; by number, the most common kind was food and beverage; the largest payer was W. L. Gore & Associates, Inc. The 4,047 providers of this specialty with any payment received $7,828.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Northwestern Medical Faculty FoundationChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron J. Clark among 265 thoracic surgery (cardiothoracic vascular surgery) physician records in Illinois
Aaron J. Clark, MD is one of 265 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Illinois. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 83% of them.
- NPI issued2019 · 83% of these records are older, 14% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2019 · median 1999 among the 148 with a school on file
- Record last updated2025 · 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 208G00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in Illinois
There are 265 thoracic surgery (cardiothoracic vascular surgery) physician records in Illinois.
All 265 in Illinois → Every provider in Chicago → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Mitesh Badiwala, M.D.Chicago, IL 606111316280035
- Ankit Bharat, MDChicago, IL 606111003852419
- Benjamin Bryner, M.D.Chicago, IL 606111992933006
- Stephen ChiuChicago, IL 606111376819706
- Allison Davila, M.D.Chicago, IL 606111992149116
- James Frederiksen, M.D.Chicago, IL 606111174676787
- Douglas Johnston, M.D.Chicago, IL 606111790957991
- Samuel Kim, MDChicago, IL 606111184771172
Common questions
What is Aaron J. Clark, MD's NPI number?
Aaron J. Clark, MD's National Provider Identifier (NPI) is 1245791797, issued on Mar 27, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Aaron J. Clark, MD located?
The NPPES record lists a practice address at 675 N Saint Clair St Ste 19-100, Chicago, IL, 60611. Phone: (312) 664-3278. Providers update this record themselves, so call before visiting.
How can I verify Aaron J. Clark, MD's license?
NPPES lists Illinois license number 036175284, 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.
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.