Dr. Chia-Wai Chang, MD
812 N Keene St, Columbia, MO 65201 • +1-944-555-5708
Medical Education: Accredited U.S. Medical School (Class of 1996)
What This Doctor Actually Performs: CMS Medicare Utilization & Columbia Percentiles
NPI #1013975986 • CBSA Regional • Otolaryngology
Anchored in Columbia, MO 65201, Dr. Chia-Wai Chang, MD (NPI 1013975986) logged 2,439 annual procedures (upper-quartile active clinical volume (66.67th Columbia percentile), 81.25th MO percentile, +0.20σ) with sub-specialty concentration in 72 Active CMS HCPCS Codes.
Dr. Chang's longitudinal care intensity (7.6 billed units per patient across 320 individuals) centers on 99213 (829 annual units) and 31231 ($91–$125 cash range).
Cash-pay intake data for NPI 1013975986 (812 N Keene St, Columbia) indicates $209.00 typical out-of-pocket visit spend against a $209.00 locality benchmark, paired with 16-minute average reception wait and 4.68/5 biomarker openness.
Spanning 30 years of clinical practice following 1996 graduation from medical training, Dr. Chia-Wai Chang integrates 72 Active CMS HCPCS Codes diagnostics for Columbia metro patients.
Compared against Columbia, MO Otolaryngology peers
2,439 annual services across 320 beneficiaries
Standard deviations from MO Otolaryngology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99213 | Focused Ear, Nose, Sinus & Throat Examination | 829 | 66.67th | $45 – $62 |
| 31231 | Diagnostic Rigid/Flexible Nasal & Sinus Endoscopy | 610 | 64.67th | $91 – $125 |
| 31575 | Flexible Fiberoptic Laryngoscopy Vocal Cord Inspection | 463 | 65.67th | $66 – $91 |
| 92557 | Comprehensive Pure-Tone Audiometry & Speech Recognition | 317 | 67.67th | $32 – $47 |
| 69210 | Instrumented Impacted Cerumen Removal Under Microscopy | 220 | 67.67th | $28 – $43 |
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Dr. Chia-Wai Chang, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Chang National Provider Identifier | NPI #1013975986 (MD) | CMS NPPES Registry (65201) |
| Dr. Chang Columbia CMS Volume Rank | 66.67th Pct (2,439 CMS svcs; Z +0.202σ) | CMS Medicare Part B (MO Otolaryngology) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Columbia, MO) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 16 min lobby wait | 22 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.66/5 Listening • 4.68/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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