Dr. Warren Chang, MD
1011 W 2nd St, Bloomington, IN 47403 • +1-306-555-6028
Medical Education: Accredited U.S. Medical School (Class of 2005)
What This Doctor Actually Performs: CMS Medicare Utilization & Bloomington Percentiles
NPI #1902888662 • CBSA Regional • Ophthalmology
Dr. Warren Chang, MD (NPI #1902888662) practices Ophthalmology in Bloomington, IN (47403) with sub-specialty concentration in 64 Active CMS HCPCS Codes, recording 15,693 annual CMS services across 1,217 distinct beneficiaries—placing this practice as a upper-quartile active clinical volume (75th Bloomington percentile) (+0.17σ vs IN state mean, 81.59th statewide percentile).
Dr. Chang's longitudinal care intensity (12.9 billed units per patient across 1217 individuals) centers on 92014 (1722 annual units) and 92134 ($130–$179 cash range).
Uninsured and high-deductible cash patients visiting Dr. Warren Chang in Bloomington (47403) face an estimated $209.00 initial evaluation fee at 1011 W 2nd St (hybrid in-clinic and telehealth video consults; 12-minute average reception wait; bedside manner 4.79/5 from 10 verified reports).
Credentialed as an MD specialist with 21 years post-graduation experience since completing medical school at an LCME/COCA institution (2005), Dr. Chang coordinates 64 Active CMS HCPCS Codes workups from 1011 W 2nd St (+1-306-555-6028).
Compared against Bloomington, IN Ophthalmology peers
15,693 annual services across 1,217 beneficiaries
Standard deviations from IN Ophthalmology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 92014 | Comprehensive Ophthalmologic Slit-Lamp & Dilated Retinal Exam | 1,722 | 75th | $237 – $324 |
| 92134 | Scanning Computerized Ophthalmic Retinal OCT Imaging | 1,210 | 72th | $130 – $179 |
| 92083 | Extended Threshold Visual Field Glaucoma Perimetry | 791 | 72th | $156 – $214 |
| 92004 | New Patient Complete Medical Eye & IOP Evaluation | 559 | 72th | $285 – $390 |
| 66984 | Extracapsular Cataract Removal w/ Intraocular Lens Implant | 372 | 71th | $1042 – $1428 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (64 HCPCS billing breadth) | 11,038 | 75th | $208 – $302 |
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Dr. Warren Chang, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Chang National Provider Identifier | NPI #1902888662 (MD) | CMS NPPES Registry (47403) |
| Dr. Chang Bloomington CMS Volume Rank | 75.00th Pct (15,693 CMS svcs; Z +0.172σ) | CMS Medicare Part B (IN Ophthalmology) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Bloomington, IN) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 12 min lobby wait | 10 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.79/5 Listening • 4.56/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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