Dr. Marion Kowalewski, MD
7602 Belair Rd, Baltimore, MD 21236 • +1-229-555-4237
Medical Education: Accredited U.S. Medical School (Class of 1994)
What This Doctor Actually Performs: CMS Medicare Utilization & Baltimore Percentiles
NPI #1538126461 • CBSA Regional • Internal Medicine
Dr. Marion Kowalewski, MD (NPI #1538126461) practices Internal Medicine in Baltimore, MD (21236) with sub-specialty concentration in 34 Active CMS HCPCS Codes, recording 5,338 annual CMS services across 926 distinct beneficiaries—placing this practice as a top-decile high-throughput specialist (96.45th percentile in Baltimore) (+0.11σ vs MD state mean, 91.15th statewide percentile).
Granular CPT/HCPCS billing distribution at 7602 Belair Rd shows Dr. Marion Kowalewski's primary concentration in Moderate-to-High Complexity Internal Medicine Follow-Up (code 99214: 2251x/yr, 96.45th local percentile) alongside Established Preventive & Chronic Care Visit (99213: 1301x/yr, $79–$108).
Self-pay new patient consultations with Dr. Kowalewski (CPT 99204 GPCI-adjusted benchmark) estimate around $209.00 (community reported average: $209.00) with hybrid in-clinic and telehealth video consults, 18-minute average reception wait, and a 4.48/5 modern protocol openness score across 26 patient logs.
From 7602 Belair Rd in Baltimore (+1-229-555-4237), Dr. Kowalewski, MD (32-year clinical track record) delivers 34 Active CMS HCPCS Codes care.
Top 10% Internal Medicine volume leader in Baltimore, MD
5,338 annual services across 926 beneficiaries
Standard deviations from MD 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 | 2,251 | 96.45th | $103 – $142 |
| 99213 | Established Preventive & Chronic Care Visit | 1,301 | 92.45th | $79 – $108 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 650 | 98.45th | $38 – $53 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 500 | 94.45th | $121 – $166 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 300 | 94.45th | $144 – $197 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (34 HCPCS billing breadth) | 336 | 96.45th | $93 – $135 |
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Dr. Marion Kowalewski, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Kowalewski National Provider Identifier | NPI #1538126461 (MD) | CMS NPPES Registry (21236) |
| Dr. Kowalewski Baltimore CMS Volume Rank | 96.45th Pct (5,338 CMS svcs; Z +0.108σ) | CMS Medicare Part B (MD Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Baltimore, MD) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 18 min lobby wait | 26 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.57/5 Listening • 4.48/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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