Marian Demus, M.D.
Diagnostic Radiology Physician · Chicago, IL
Marian Demus, M.D. is a diagnostic radiology physician with a practice address in Chicago, Illinois, and NPI 1326146820, issued on Sep 20, 2006. Check the license (Illinois 36072464, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Marian Demus
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- 36072464 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1431 N Claremont Ave, Chicago, IL 60622
- Phone
- (312) 633-5850
- Enumerated
- Sep 20, 2006
- Record last updated
- Apr 23, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110627000454); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1984
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 1,874 in Illinois → Look up another NPI →
Also registered at 1431 N Claremont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Scott Betzelos, MDEmergency Medicine Physician1154377711
- Adam Black, MDEmergency Medicine Physician1851313241
- Flor Cabrera, NPAcute Care Nurse Practitioner1558720888
- Yadira ChavezClinical Social Worker1104307966
- Arockiamary Dharmaraj, PA-CPhysician Assistant1417024845
- Robert Duncan, APNPsychiatric/Mental Health Nurse Practitioner1881291342
Verify Marian Demus 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 36072464Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 78.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Imaging Associates OF Indiana, PCCrown Point, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marian Demus among 1,874 diagnostic radiology physician records in Illinois
Marian Demus, M.D. is one of 1,874 diagnostic radiology physician records with a practice address in Illinois. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 54% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1984 · median 2004 among the 1,201 with a school on file
- Record last updated2012 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in Illinois
There are 1,874 diagnostic radiology physician records in Illinois.
All 1,874 in Illinois → Every provider in Chicago → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Rita Abejo, MDChicago, IL 606221477509537
- Todd Brack, D.O.Chicago, IL 606221669422630
- John Connolly, M.D.Chicago, IL 606221215987508
- Larry Goldstein, MDChicago, IL 606221215976808
- Bob Kao, MDChicago, IL 606221821009440
- Thomas Britt, MDChicago, IL 606191508903782
- Ellyn Feinzimer, M.D.Chicago, IL 606251932260742
- Aswin Krishnamoorthy, M.D.Chicago, IL 606251164753273
Common questions
What is Marian Demus, M.D.'s NPI number?
Marian Demus, M.D.'s National Provider Identifier (NPI) is 1326146820, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marian Demus, M.D. located?
The NPPES record lists a practice address at 1431 N Claremont Ave, Chicago, IL, 60622. Phone: (312) 633-5850. Providers update this record themselves, so call before visiting.
How can I verify Marian Demus, M.D.'s license?
NPPES lists Illinois license number 36072464, 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.
What is Marian Demus, M.D.'s MIPS final score?
The 2023 MIPS final score is 78.8 of 100, reported for the practice group. 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.