Dr. Guy Vin Chang, MD
110 Irving St Nw, Washington, DC 20010 • +1-975-555-2978
Medical Education: Accredited U.S. Medical School (Class of 2017)
What This Doctor Actually Performs: CMS Medicare Utilization & Washington Percentiles
NPI #1154718955 • CBSA Regional • Geriatric Medicine
Statistical peer benchmarking across DC Geriatric Medicine providers positions Dr. Guy Vin Chang, MD in Washington at -0.45σ (50th city percentile / 42.86th state percentile, 312 Medicare beneficiaries), with clinical focus spanning 33 Active CMS HCPCS Codes.
Fee-schedule auditing of NPI 1154718955 highlights 529 annual claims for 99214 (50th Washington percentile; $197–$270 self-pay corridor) plus 306 encounters under 99213 and 153 under 93000.
Uninsured and high-deductible cash patients visiting Dr. Guy Vin Chang in Washington (20010) face an estimated $209.00 initial evaluation fee at 110 Irving St Nw (hybrid in-clinic and telehealth video consults; 19-minute average reception wait; bedside manner 4.82/5 from 7 verified reports).
NPI registry verification (#1154718955) confirms Dr. Guy Vin Chang's MD standing serving CBSA 20010 with a 4.92/5 patient scorecard.
Compared against Washington, DC Geriatric Medicine peers
1,252 annual services across 312 beneficiaries
Standard deviations from DC Geriatric 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 | 529 | 50th | $197 – $270 |
| 99213 | Established Preventive & Chronic Care Visit | 306 | 49th | $151 – $206 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 153 | 49th | $72 – $99 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 118 | 51th | $231 – $317 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 71 | 47th | $274 – $375 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (33 HCPCS billing breadth) | 77 | 50th | $178 – $258 |
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Dr. Guy Vin Chang, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Chang National Provider Identifier | NPI #1154718955 (MD) | CMS NPPES Registry (20010) |
| Dr. Chang Washington CMS Volume Rank | 50.00th Pct (1,252 CMS svcs; Z -0.451σ) | CMS Medicare Part B (DC Geriatric Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Washington, DC) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 19 min lobby wait | 7 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.82/5 Listening • 4.61/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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