Dr. Marian Demus, MD
- Medicare services, 2024
- 6,728
- Medicare patients, 2024
- 4,554
- MIPS score, 2024
- 75
- Hospital affiliations
- 5
- Industry payments
- $193
- Practice address
- 24 Joliet St, Dyer, IN 46311
- Practice phone
- Call (219) 865-2141
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Demus' professional email, personal email and mobile number
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Dr. Marian Demus is a diagnostic radiologist in Dyer, Indiana
Dr. Demus practices at Franciscan Health Dyer in Dyer, Indiana, part of Franciscan Alliance.
Dr. Demus' NPI, 1326146820, was assigned on September 20, 2006. Dr. Demus graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1984. Dr. Demus holds Illinois license 36072464.
- NPI
- 1326146820NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779551908
- NPI enumeration date
- September 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (219) 865-2141
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marian Demus practices at Franciscan Health Dyer in Dyer, Indiana
Dr. Demus' primary practice is Franciscan Health Dyer, at 24 Joliet St, Dyer, IN 46311 in Lake County. The practice phone is (219) 865-2141.
- Franciscan Health Dyer24 Joliet St, Dyer, IN 46311 · Lake CountyPhone(219) 865-2141
Source: Dmand AI Affiliation Data
Dr. Marian Demus is affiliated with 6 sites of care and 1 medical group
Dr. Demus' primary practice is Franciscan Health Dyer in Dyer, Indiana, part of Franciscan Alliance. Dr. Demus is also affiliated with Franciscan Health Crown Point. The medical group on file is Imaging Associates of Indiana. Dmand AI also links Dr. Demus to 3 more hospitals and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marian Demus' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Demus practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Franciscan Health Dyer | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marian Demus is one of 663 diagnostic radiologists in Indiana
Diagnostic radiology is Dr. Demus' primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Demus is licensed in Illinois.
Specialties and state licenses
- Diagnostic radiology, IllinoisPrimary
Diagnostic radiologists near Dr. Demus
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Marian Demus billed Medicare for 6,728 services in 2024
CMS data shows 6,728 Medicare services from Dr. Demus across 39 procedure codes in 2024, for 4,554 Medicare patients. Medicare paid $149,171 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Demus' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 6,1632024: 6,4094%
- Tests and treatments
- 2023: 962024: 307220%
- Surgery
- 2023: 02024: 12
Dr. Demus compared with the Indiana median for diagnostic radiologists, 2024
- Dr. Demus
- Indiana median
- Medicare services
- 6,728vs 2,3922.8 times
- Medicare patients
- 4,554vs 1,7112.7 times
Medians across 639 diagnostic radiologists in Indiana with Dmand AI profiles that report each measure.
Dr. Demus' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Demus and other diagnostic radiologists in Indiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marian Demus treated 4,554 Medicare patients in 2024, average age 76
CMS counts 4,554 Medicare patients who saw Dr. Demus in 2024. The largest group is 75 to 84, with 1,701 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.91, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Demus' median patient age at 68, with 59% women.
Dr. Demus' Medicare patients by age, 2024
Dr. Demus' Medicare patients by sex, 2024
- Women2,55856%
- Men1,99644%
Chronic conditions among Dr. Demus' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Ischemic heart disease46%
- Diabetes40%
- Mood disorders39%
- Chronic kidney disease38%
- Heart failure38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Demus' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marian Demus scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Demus for performance year 2024, reported individually. Dr. Demus accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Marian Demus received $193 in industry payments from 2019 to 2025
CMS Open Payments shows 3 general payments to Dr. Demus from 3 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $100.
General payments to Dr. Demus by program year, 2019 to 2025
Companies that paid Dr. Demus the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marian Demus graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Dr. Demus graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marian Demus's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Marian Demus
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Marian Demus' NPI number?
Dr. Marian Demus' NPI number is 1326146820. It was assigned on September 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marian Demus?
Dr. Marian Demus is a diagnostic radiologist in Dyer, Indiana. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Marian Demus practice?
Dr. Demus practices at 24 Joliet St, Dyer, IN 46311. Dr. Demus' primary practice is Franciscan Health Dyer in Dyer, Indiana, part of Franciscan Alliance. Dmand AI also links Dr. Demus to 3 hospitals and 1 group practice or clinic.
What is Dr. Marian Demus' office phone number?
The practice phone on file for Dr. Demus is (219) 865-2141.
What is Dr. Marian Demus' medical license number?
Dr. Demus holds Illinois license 36072464.
Which hospitals is Dr. Marian Demus affiliated with?
Dr. Demus practices at Franciscan Health Dyer in Dyer, Indiana. Dr. Demus is also affiliated with Franciscan Health Crown Point. Dmand AI links Dr. Demus to 3 more hospitals.
What medical group is Dr. Marian Demus part of?
Dr. Demus is linked to Imaging Associates of Indiana.
Does Dr. Marian Demus accept Medicare?
Yes. CMS data shows Dr. Demus billed Medicare for 6,728 services in 2024, and Dr. Demus accepts Medicare assignment.
What is Dr. Marian Demus' MIPS score?
Dr. Demus' MIPS final score for performance year 2024 is 75 out of 100, reported individually.
How many Medicare patients does Dr. Marian Demus see?
CMS counts 4,554 Medicare patients who saw Dr. Demus in 2024, with an average age of 76.
Show 4 more questionsShow fewer questions
What services does Dr. Marian Demus bill to Medicare?
In 2024, Dr. Demus' most billed Medicare services were diagnostic imaging (71045), diagnostic imaging (70450) and diagnostic imaging (71275).
Where did Dr. Marian Demus go to medical school?
Dr. Demus graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1984.
Has Dr. Marian Demus received payments from drug or device companies?
CMS Open Payments shows $193 in general payments to Dr. Demus from 3 companies from 2019 to 2025. The largest total came from Amgen Inc.
How long has Dr. Marian Demus been practicing?
Dr. Demus graduated from medical school in 1984, 42 years ago.
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