Dr. Derek Serna, MD
N16w24131 Riverwood DR, Waukesha, WI 53188 • +1-313-555-4539
Medical Education: Accredited U.S. Medical School (Class of 2018)
What This Doctor Actually Performs: CMS Medicare Utilization & Waukesha Percentiles
NPI #1205044773 • CBSA Regional • Medical Oncology
Statistical peer benchmarking across WI Medical Oncology providers positions Dr. Derek Serna, MD in Waukesha at -0.38σ (75th city percentile / 42.86th state percentile, 367 Medicare beneficiaries), with clinical focus spanning 14 Active CMS HCPCS Codes.
Among 5 tracked CMS fee-schedule codes for Dr. Serna (averaging 2.4 services per beneficiary), 99214 (Moderate-to-High Complexity Internal Medicine Follow-Up) represents 45% of tracked volume (396 encounters), paired with 99213 (229x).
Direct cash-pay transparency modeling sets Dr. Serna's baseline new-consult rate near $209.00 in Waukesha, WI (cash-pay accepted, hybrid in-clinic and telehealth video consults, 11-minute average reception wait).
NPI registry verification (#1205044773) confirms Dr. Derek Serna's MD standing serving CBSA 53188 with a 4.74/5 patient scorecard.
Compared against Waukesha, WI Medical Oncology peers
880 annual services across 367 beneficiaries
Standard deviations from WI Medical Oncology 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 | 396 | 75th | $161 – $220 |
| 99213 | Established Preventive & Chronic Care Visit | 229 | 79th | $123 – $168 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 114 | 79th | $59 – $80 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 88 | 75th | $189 – $258 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 53 | 76th | $223 – $306 |
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Dr. Derek Serna, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Serna National Provider Identifier | NPI #1205044773 (MD) | CMS NPPES Registry (53188) |
| Dr. Serna Waukesha CMS Volume Rank | 75.00th Pct (880 CMS svcs; Z -0.382σ) | CMS Medicare Part B (WI Medical Oncology) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Waukesha, WI) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 11 min lobby wait | 5 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.55/5 Listening • 4.41/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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