Dr. Mark Demus, MD
1555 Barrington Rd, Hoffman Estates, IL 60169 • +1-492-555-4849
Medical Education: Accredited U.S. Medical School (Class of 1997)
What This Doctor Actually Performs: CMS Medicare Utilization & Hoffman Estates Percentiles
NPI #1477571479 • CBSA Regional • Internal Medicine
CMS Medicare Part B utilization records credit Dr. Mark Demus (MD, NPI 1477571479) at 1555 Barrington Rd in Hoffman Estates with 734 annual clinical services (639 beneficiaries), corresponding to a -0.22σ regional deviation and focused low-volume boutique caseload (6.67th Hoffman Estates percentile) with sub-specialty concentration in 29 Active CMS HCPCS Codes.
Procedural volume for Dr. Demus is led by HCPCS 99214 (Moderate-to-High Complexity Internal Medicine Follow-Up — 330 annual services, $245–$336 GPCI cash estimate), followed by CPT 99213 (Established Preventive & Chronic Care Visit, 191/yr) and CPT 93000 (In-Office 12-Lead Resting Electrocardiogram, 95/yr).
Self-pay new patient consultations with Dr. Demus (CPT 99204 GPCI-adjusted benchmark) estimate around $218.00 (community reported average: $218.00) with hybrid in-clinic and telehealth video consults, 10-minute average reception wait, and a 4.88/5 modern protocol openness score across 8 patient logs.
From 1555 Barrington Rd in Hoffman Estates (+1-492-555-4849), Dr. Demus, MD (29-year clinical track record) delivers 29 Active CMS HCPCS Codes care.
Compared against Hoffman Estates, IL Internal Medicine peers
734 annual services across 639 beneficiaries
Standard deviations from IL Internal Medicine mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Moderate-to-High Complexity Internal Medicine Follow-Up | 330 | 12th | $245 – $336 |
| 99213 | Established Preventive & Chronic Care Visit | 191 | 12th | $187 – $257 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 95 | 12th | $89 – $123 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 73 | 12th | $287 – $394 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 44 | 12th | $341 – $467 |
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Dr. Mark Demus, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Demus National Provider Identifier | NPI #1477571479 (MD) | CMS NPPES Registry (60169) |
| Dr. Demus Hoffman Estates CMS Volume Rank | 6.67th Pct (734 CMS svcs; Z -0.223σ) | CMS Medicare Part B (IL Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $218.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Hoffman Estates, IL) |
| Waiting-Room Wait Time & Cash Friendliness | $218.00 avg paid • 10 min lobby wait | 8 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.79/5 Listening • 4.88/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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