Dr. Darren Brenner, MD
675 N Saint Clair St, Suite 17-250, Chicago, IL 60611 • +1-630-555-5901
Medical Education: Accredited U.S. Medical School (Class of 1993)
What This Doctor Actually Performs: CMS Medicare Utilization & Chicago Percentiles
NPI #1003997875 • CBSA 16980 • Gastroenterology
Statistical peer benchmarking across IL Gastroenterology providers positions Dr. Darren Brenner, MD in Chicago at -0.27σ (39.39th city percentile / 26.63th state percentile, 469 Medicare beneficiaries), with clinical focus spanning 33 Active CMS HCPCS Codes.
Granular CPT/HCPCS billing distribution at 675 N Saint Clair St, Suite 17-250 shows Dr. Darren Brenner's primary concentration in Established Gastroenterology, GERD & IBD Evaluation (code 99214: 332x/yr, 39.39th local percentile) alongside Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy (45380: 224x/yr, $419–$574).
Uninsured and high-deductible cash patients visiting Dr. Darren Brenner in Chicago (60611) face an estimated $222.00 initial evaluation fee at 675 N Saint Clair St, Suite 17-250 (hybrid in-clinic and telehealth video consults; 18-minute average reception wait; bedside manner 4.96/5 from 22 verified reports).
Clinical background for Dr. Brenner (MD, NPI #1003997875) includes accredited doctoral training (1993, 33 yrs in practice) and virtual + in-office availability across IL.
Compared against Chicago, IL Gastroenterology peers
896 annual services across 469 beneficiaries
Standard deviations from IL Gastroenterology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Established Gastroenterology, GERD & IBD Evaluation | 332 | 39.39th | $174 – $238 |
| 45380 | Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy | 224 | 44.39th | $419 – $574 |
| 43239 | Upper GI Esophagogastroduodenoscopy (EGD) w/ Biopsy | 188 | 36.39th | $347 – $476 |
| 45385 | Colonoscopy w/ Snare Polypectomy Lesion Removal | 90 | 40.39th | $466 – $638 |
| 99204 | New Patient Digestive & Hepatology Consultation | 63 | 43.39th | $245 – $335 |
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Dr. Darren Brenner, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Brenner National Provider Identifier | NPI #1003997875 (MD) | CMS NPPES Registry (60611) |
| Dr. Brenner Chicago CMS Volume Rank | 39.39th Pct (896 CMS svcs; Z -0.267σ) | CMS Medicare Part B (IL Gastroenterology) |
| Fair Cash-Pay New-Patient Benchmark | $222.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Chicago, IL) |
| Waiting-Room Wait Time & Cash Friendliness | $222.00 avg paid • 18 min lobby wait | 22 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.96/5 Listening • 4.50/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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