Dr. Steven Marshak, MD
9900 Belward Campus Drive, Suite 325, Rockville, MD 20850 • +1-457-555-1781
Medical Education: Accredited U.S. Medical School (Class of 1998)
What This Doctor Actually Performs: CMS Medicare Utilization & Rockville Percentiles
NPI #1730110305 • CBSA Regional • Internal Medicine
Anchored in Rockville, MD 20850, Dr. Steven Marshak, MD (NPI 1730110305) logged 1,592 annual procedures (mid-cohort balanced caseload (39.19th Rockville percentile), 50.57th MD percentile, -0.11σ) with sub-specialty concentration in 28 Active CMS HCPCS Codes.
Medicare Part B line-item claims for Dr. Steven Marshak (20850) place 99214 at the top of the practice ledger (683 yearly units, 39.19th metro rank), rounded out by 99213 and 93000.
Self-pay new patient consultations with Dr. Marshak (CPT 99204 GPCI-adjusted benchmark) estimate around $209.00 (community reported average: $209.00) with in-person clinic visits only, 14-minute average reception wait, and a 4.73/5 modern protocol openness score across 24 patient logs.
Patients evaluating Dr. Steven Marshak in ZIP 20850 note 28 years of post-doctoral tenure (null, 1998) alongside 3.6 annual CMS procedures per patient.
Compared against Rockville, MD Internal Medicine peers
1,592 annual services across 438 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 | 683 | 39.19th | $150 – $206 |
| 99213 | Established Preventive & Chronic Care Visit | 394 | 37.19th | $115 – $157 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 197 | 39.19th | $55 – $75 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 152 | 36.19th | $176 – $241 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 91 | 40.19th | $209 – $286 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (28 HCPCS billing breadth) | 75 | 39.19th | $135 – $196 |
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Dr. Steven Marshak, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Marshak National Provider Identifier | NPI #1730110305 (MD) | CMS NPPES Registry (20850) |
| Dr. Marshak Rockville CMS Volume Rank | 39.19th Pct (1,592 CMS svcs; Z -0.110σ) | CMS Medicare Part B (MD Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Rockville, MD) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 14 min lobby wait | 24 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.90/5 Listening • 4.73/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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