Dr. Louis Chang, MD
10215 Fernwood Rd, Bethesda, MD 20817 • +1-473-555-8335
Medical Education: Accredited U.S. Medical School (Class of 2003)
What This Doctor Actually Performs: CMS Medicare Utilization & Bethesda Percentiles
NPI #1235265364 • CBSA Regional • Neurosurgery
Operating out of Bethesda, MD (10215 Fernwood Rd), Neurosurgery clinician Dr. Louis Chang, MD (accredited MD/DO training, 2003) maintains a mid-cohort balanced caseload (50th Bethesda percentile) (25.81th MD percentile; Z-score -0.71σ across 785 documented services) with sub-specialty concentration in 56 Active CMS HCPCS Codes.
Procedural volume for Dr. Chang is led by HCPCS 99214 (Moderate-to-High Complexity Internal Medicine Follow-Up — 353 annual services, $426–$583 GPCI cash estimate), followed by CPT 99213 (Established Preventive & Chronic Care Visit, 204/yr) and CPT 93000 (In-Office 12-Lead Resting Electrocardiogram, 102/yr).
Cash-pay intake data for NPI 1235265364 (10215 Fernwood Rd, Bethesda) indicates $209.00 typical out-of-pocket visit spend against a $209.00 locality benchmark, paired with 11-minute average reception wait and 4.68/5 biomarker openness.
Credentialed as an MD specialist with 23 years post-graduation experience since completing medical school at an LCME/COCA institution (2003), Dr. Chang coordinates 56 Active CMS HCPCS Codes workups from 10215 Fernwood Rd (+1-473-555-8335).
Compared against Bethesda, MD Neurosurgery peers
785 annual services across 398 beneficiaries
Standard deviations from MD Neurosurgery 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 | 353 | 50th | $426 – $583 |
| 99213 | Established Preventive & Chronic Care Visit | 204 | 46th | $326 – $446 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 102 | 54th | $155 – $213 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 79 | 55th | $500 – $685 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 47 | 54th | $592 – $812 |
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Dr. Louis Chang, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Chang National Provider Identifier | NPI #1235265364 (MD) | CMS NPPES Registry (20817) |
| Dr. Chang Bethesda CMS Volume Rank | 50.00th Pct (785 CMS svcs; Z -0.713σ) | CMS Medicare Part B (MD Neurosurgery) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Bethesda, MD) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 11 min lobby wait | 23 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.60/5 Listening • 4.68/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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