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Dr. Marian Demus, M.D.

Diagnostic Radiology Physician in Chicago, IL · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1326146820

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Registry record

Entity type Individual (Type 1)
Name Dr. Marian Demus
Credential M.D.
Sex Male
Practice address 1431 N Claremont Ave, Chicago, IL, 60622
Phone (312) 633-5850
Enumeration date Sep 20, 2006
Last updated in NPPES Apr 23, 2012

Taxonomy & licenses

2085B0100X Body Imaging Physician Allopathic & Osteopathic Physicians · License 36072464 (IL) Secondary
2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians · License 36072464 (IL) Secondary
2085N0904X Nuclear Radiology Physician Allopathic & Osteopathic Physicians · License 36072464 (IL) Secondary
2085P0229X Pediatric Radiology Physician Allopathic & Osteopathic Physicians · License 36072464 (IL) Secondary
2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 36072464 (IL) Primary
2085R0203X Therapeutic Radiology Physician Allopathic & Osteopathic Physicians · License 36072464 (IL) Secondary
2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License 36072464 (IL) Secondary
2085U0001X Diagnostic Ultrasound Physician Allopathic & Osteopathic Physicians · License 36072464 (IL) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Marian Demus's NPI record?
Cross-check NPI 1326146820 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1326146820 active?
Yes, as of the latest NPPES snapshot, NPI 1326146820 is active (record last updated 2012-04-23).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-23.