Ahmed N. Hassan, MD
Critical Care Medicine (Internal Medicine) Physician · Naperville, IL
Ahmed N. Hassan, MD is a critical care medicine (internal medicine) physician with a practice address in Naperville, Illinois, and NPI 1548426745, issued on Aug 6, 2008. Check the license (Illinois 036121123, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Ahmed N. Hassan
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License numbers
- 036121123 IL
2010030926 MO
Self-reported in NPPES; status is on the state search - Practice location
- 801 S. Washington St, Naperville, IL 60540
- Phone
- (630) 527-7235
- Enumerated
- Aug 6, 2008
- Record last updated
- Feb 4, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 010030926 IL
- Medicare enrollment
- Enrolled (PECOS I20090630000202); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Kansas City, School Of Medicine, 1998
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 281 in Illinois → Look up another NPI →
Also registered at 801 S. Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Matthew Dunne, M.D.Hospitalist Physician1588853113
- Linda Mueller, MDEmergency Medicine Physician1992775803
Verify Ahmed N. Hassan 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 036121123Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Endeavor Health Medical GroupEvanston, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ahmed N. Hassan among 281 critical care medicine (internal medicine) physician records in Illinois
Ahmed N. Hassan, MD 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
- Graduated1998 · median 2008 among the 226 with a school on file
- Record last updated2021 · 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 Naperville → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Sushma Chinni, D.ONaperville, IL 605401770018061
- Luis Escobar Carrasquero, M.D.Naperville, IL 605401558723239
- Gautam Mehta, MDNaperville, IL 605401336481779
- Samir Patel, MDNaperville, IL 605401598969115
- Paul Wucka, D.O.Naperville, IL 605401215243027
- Edward Garrity, MDBurr Ridge, IL 605271376606897
- Jared Greenberg, M.D.Burr Ridge, IL 605271649438227
- Michael Howell, MDBurr Ridge, IL 605271164474730
Common questions
What is Ahmed N. Hassan, MD's NPI number?
Ahmed N. Hassan, MD's National Provider Identifier (NPI) is 1548426745, issued on Aug 6, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ahmed N. Hassan, MD located?
The NPPES record lists a practice address at 801 S. Washington St, Naperville, IL, 60540. Phone: (630) 527-7235. Providers update this record themselves, so call before visiting.
How can I verify Ahmed N. Hassan, MD's license?
NPPES lists Illinois license number 036121123, 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.