Dr. Marissa Lewis, MD
660 S Euclid Ave, Saint Louis, MO 63110 • +1-839-555-6133
Medical Education: Accredited U.S. Medical School (Class of 1999)
What This Doctor Actually Performs: CMS Medicare Utilization & Saint Louis Percentiles
NPI #1164874822 • CBSA Regional • Emergency Medicine
Operating out of Saint Louis, MO (660 S Euclid Ave), Emergency Medicine clinician Dr. Marissa Lewis, MD (accredited MD/DO training, 1999) maintains a top-decile high-throughput specialist (94.74th percentile in Saint Louis) (99.17th MO percentile; Z-score +5.79σ across 4,917 documented services) with sub-specialty concentration in 21 Active CMS HCPCS Codes.
Granular CPT/HCPCS billing distribution at 660 S Euclid Ave shows Dr. Marissa Lewis's primary concentration in Moderate-to-High Complexity Internal Medicine Follow-Up (code 99214: 2213x/yr, 94.74th local percentile) alongside Established Preventive & Chronic Care Visit (99213: 1278x/yr, $178–$243).
For out-of-network patients contacting +1-839-555-6133, Dr. Lewis's practice posts a $209.00 GPCI self-pay consult estimate ($209.00 patient-logged median, 4.82/5 composite reality score over 25 submissions).
Credentialed as an MD specialist with 27 years post-graduation experience since completing medical school at an LCME/COCA institution (1999), Dr. Lewis coordinates 21 Active CMS HCPCS Codes workups from 660 S Euclid Ave (+1-839-555-6133).
Top 10% Emergency Medicine volume leader in Saint Louis, MO
4,917 annual services across 385 beneficiaries
Standard deviations from MO Emergency 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 | 2,213 | 94.74th | $232 – $318 |
| 99213 | Established Preventive & Chronic Care Visit | 1,278 | 90.74th | $178 – $243 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 639 | 96.74th | $85 – $116 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 492 | 97.74th | $273 – $373 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 295 | 94.74th | $323 – $443 |
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Dr. Marissa Lewis, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Lewis National Provider Identifier | NPI #1164874822 (MD) | CMS NPPES Registry (63110) |
| Dr. Lewis Saint Louis CMS Volume Rank | 94.74th Pct (4,917 CMS svcs; Z +5.794σ) | CMS Medicare Part B (MO Emergency Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Saint Louis, MO) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 17 min lobby wait | 25 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.57/5 Listening • 4.41/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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