Michael Achilles Markos, M.D.
Critical Care Medicine (Internal Medicine) Physician · Berwyn, IL
Michael Achilles Markos, M.D. is a critical care medicine (internal medicine) physician with a practice address in Berwyn, Illinois, and NPI 1861658007, issued on Aug 6, 2008. Check the license (Illinois 036123662, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Michael Achilles Markos
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 036123662 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3249 Oak Park Ave, Berwyn, IL 60402
- Phone
- (708) 783-2232
- Enumerated
- Aug 6, 2008
- Record last updated
- Feb 9, 2024
- Fax
- (708) 783-2078
- Medicare enrollment
- Enrolled (PECOS I20090724000496); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 281 in Illinois → Look up another NPI →
Also registered at 3249 Oak Park Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gholamali Afshang, MDDiagnostic Radiology Physician1316925522
- Sumayyah Ahmed, PA-CPhysician Assistant1851084206
- Michelle Akan, CRNACertified Registered Nurse Anesthetist1376808683
- Angela Alcarraz Bedrillana, MDInternal Medicine Physician1033813720
- Haris Aleem, MDHospitalist Physician1063409795
- John Alexis, M.D.Emergency Medicine Physician1689608713
Verify Michael Achilles Markos 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 036123662Check 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: $21.09
1 payment: food and beverage; the largest payer was Mylan Specialty L.P. The 2,708 providers of this specialty with any payment received $2,958.68 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.
One hospital affiliation
- Loyola University Medical CenterMaywood, IL · Acute Care Hospitals2 of 5 stars
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.
Michael Achilles Markos among 281 critical care medicine (internal medicine) physician records in Illinois
Michael Achilles Markos, M.D. is one of 281 critical care medicine (internal medicine) physician records with a practice address in Illinois. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 37% of them.
- NPI issued2008 · 37% of these records are older, 56% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2006 · median 2008 among the 226 with a school on file
- Record last updated2024 · 22% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Illinois
There are 281 critical care medicine (internal medicine) physician records in Illinois.
All 281 in Illinois → Every provider in Berwyn → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Mairaj Jaleel, MDBerwyn, IL 604021083649990
- Fadi Aldaas, M.DChicago Ridge, IL 604151417245499
- Dinas Aleksonis, MDChicago Ridge, IL 604151255505608
- Abdullah Chahin, MDChicago Ridge, IL 604151972736890
- Eyad Karzoun, MDChicago Ridge, IL 604151649470196
- Anas Nahhas, M.D.Chicago Ridge, IL 604151780648873
- Nirmit Desai, MDHarvey, IL 604261902368913
- Kirk Meyers, MDHazel Crest, IL 604291972064012
Common questions
What is Michael Achilles Markos, M.D.'s NPI number?
Michael Achilles Markos, M.D.'s National Provider Identifier (NPI) is 1861658007, issued on Aug 6, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Michael Achilles Markos, M.D. located?
The NPPES record lists a practice address at 3249 Oak Park Ave, Berwyn, IL, 60402. Phone: (708) 783-2232. Providers update this record themselves, so call before visiting.
How can I verify Michael Achilles Markos, M.D.'s license?
NPPES lists Illinois license number 036123662, 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.