Dr. Stephen Chang, MD
675 N Saint Clair St, Galter 17-250, Chicago, IL 60611 • +1-630-555-5833
Medical Education: Accredited U.S. Medical School (Class of 2015)
What This Doctor Actually Performs: CMS Medicare Utilization & Chicago Percentiles
NPI #1770695793 • CBSA 16980 • Gastroenterology
CMS Medicare Part B utilization records credit Dr. Stephen Chang (MD, NPI 1770695793) at 675 N Saint Clair St, Galter 17-250 in Chicago with 827 annual clinical services (483 beneficiaries), corresponding to a -0.28σ regional deviation and focused low-volume boutique caseload (24.24th Chicago percentile) with sub-specialty concentration in 35 Active CMS HCPCS Codes.
Procedural volume for Dr. Chang is led by HCPCS 99214 (Established Gastroenterology, GERD & IBD Evaluation — 306 annual services, $202–$276 GPCI cash estimate), followed by CPT 45380 (Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy, 207/yr) and CPT 43239 (Upper GI Esophagogastroduodenoscopy (EGD) w/ Biopsy, 174/yr).
Uninsured and high-deductible cash patients visiting Dr. Stephen Chang in Chicago (60611) face an estimated $222.00 initial evaluation fee at 675 N Saint Clair St, Galter 17-250 (hybrid in-clinic and telehealth video consults; 10-minute average reception wait; bedside manner 4.79/5 from 8 verified reports).
From 675 N Saint Clair St, Galter 17-250 in Chicago (+1-630-555-5833), Dr. Chang, MD (11-year clinical track record) delivers 35 Active CMS HCPCS Codes care.
Compared against Chicago, IL Gastroenterology peers
827 annual services across 483 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 | 306 | 24.24th | $202 – $276 |
| 45380 | Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy | 207 | 23.24th | $486 – $665 |
| 43239 | Upper GI Esophagogastroduodenoscopy (EGD) w/ Biopsy | 174 | 28.24th | $403 – $552 |
| 45385 | Colonoscopy w/ Snare Polypectomy Lesion Removal | 83 | 24.24th | $541 – $741 |
| 99204 | New Patient Digestive & Hepatology Consultation | 58 | 26.24th | $284 – $389 |
Are you Dr. Stephen Chang? Embed your Official DotMD Verification Badge (0-JS SVG)
Paste this lightweight SVG snippet onto your clinic bio page in Chicago, IL:
<a href="https://dotmd.com/doctors/stephen-chang-md-chicago-il-1770695793" title="Dr. Stephen Chang, MD - Verified CMS Utilization on DotMD"><img src="https://dotmd.com/badges/npi/1770695793.svg" alt="Dr. Stephen Chang Gastroenterology Badge" width="280" height="72" /></a>
Dr. Stephen Chang, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Chang National Provider Identifier | NPI #1770695793 (MD) | CMS NPPES Registry (60611) |
| Dr. Chang Chicago CMS Volume Rank | 24.24th Pct (827 CMS svcs; Z -0.277σ) | 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 • 10 min lobby wait | 8 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.79/5 Listening • 4.52/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
Ask our AI Specialists anything about Dr. Stephen Chang
Other High-Volume Gastroenterology Specialists in Chicago, IL
Ranked strictly by CMS Medicare volumeDr. Chang Waiting-Room Q&A & Patient Experience Logs
Anonymous patient-submitted wait times, cash visit fees, and bedside manner discussions in Chicago, IL.
Share your self-pay visit cost and lobby wait time—no account, email, or IP stored.
Filter Dr. Stephen Chang community threads and patient logs by age, biological sex, dosage, and treatment duration.