Dr. Sergio Diaz, MD
301 Med Tech Pkwy Ste 240, Johnson City, TN 37604 • +1-943-555-2612
Medical Education: Accredited U.S. Medical School (Class of 2016)
What This Doctor Actually Performs: CMS Medicare Utilization & Johnson City Percentiles
NPI #1417138439 • CBSA Regional • Internal Medicine
Within the Johnson City, TN (CBSA local) Internal Medicine cohort, Dr. Sergio Diaz, MD with sub-specialty concentration in 14 Active CMS HCPCS Codes ranks at the 32.2th municipal percentile and 26.18th TN percentile (-0.37σ Z-score) based on 968 billed procedures for 305 patients.
Procedural volume for Dr. Diaz is led by HCPCS 99214 (Moderate-to-High Complexity Internal Medicine Follow-Up — 436 annual services, $161–$221 GPCI cash estimate), followed by CPT 99213 (Established Preventive & Chronic Care Visit, 252/yr) and CPT 93000 (In-Office 12-Lead Resting Electrocardiogram, 126/yr).
For out-of-network patients contacting +1-943-555-2612, Dr. Diaz's practice posts a $201.00 GPCI self-pay consult estimate ($201.00 patient-logged median, 4.55/5 composite reality score over 18 submissions).
NPI registry verification (#1417138439) confirms Dr. Sergio Diaz's MD standing serving CBSA 37604 with a 4.55/5 patient scorecard.
Compared against Johnson City, TN Internal Medicine peers
968 annual services across 305 beneficiaries
Standard deviations from TN Internal 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 | 436 | 32.2th | $161 – $221 |
| 99213 | Established Preventive & Chronic Care Visit | 252 | 37.2th | $123 – $169 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 126 | 33.2th | $59 – $81 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 97 | 32.2th | $189 – $259 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 58 | 36.2th | $224 – $307 |
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Dr. Sergio Diaz, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Diaz National Provider Identifier | NPI #1417138439 (MD) | CMS NPPES Registry (37604) |
| Dr. Diaz Johnson City CMS Volume Rank | 32.20th Pct (968 CMS svcs; Z -0.367σ) | CMS Medicare Part B (TN Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $201.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Johnson City, TN) |
| Waiting-Room Wait Time & Cash Friendliness | $201.00 avg paid • 12 min lobby wait | 18 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.65/5 Listening • 4.53/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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