Dr. Warren Ferris, MD
3305 North Leisure World Boulevard, Silver Spring, MD 20906 • +1-208-555-3097
Medical Education: Accredited U.S. Medical School (Class of 2018)
What This Doctor Actually Performs: CMS Medicare Utilization & Silver Spring Percentiles
NPI #1487744280 • CBSA Regional • Rheumatology
Operating out of Silver Spring, MD (3305 North Leisure World Boulevard), Rheumatology clinician Dr. Warren Ferris, MD (accredited MD/DO training, 2018) maintains a top-decile high-throughput specialist (99th percentile in Silver Spring) (13.98th MD percentile; Z-score -0.81σ across 2,864 documented services) with sub-specialty concentration in 15 Active CMS HCPCS Codes.
Medicare Part B line-item claims for Dr. Warren Ferris (20906) place 99214 at the top of the practice ledger (355 yearly units, 99th metro rank), rounded out by 20610 and 96413.
Self-pay new patient consultations with Dr. Ferris (CPT 99204 GPCI-adjusted benchmark) estimate around $209.00 (community reported average: $209.00) with hybrid in-clinic and telehealth video consults, 16-minute average reception wait, and a 4.65/5 modern protocol openness score across 14 patient logs.
Spanning 8 years of clinical practice following 2018 graduation from medical training, Dr. Warren Ferris integrates 15 Active CMS HCPCS Codes diagnostics for Silver Spring metro patients.
Top 10% Rheumatology volume leader in Silver Spring, MD
2,864 annual services across 264 beneficiaries
Standard deviations from MD Rheumatology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Autoimmune Arthritis & Biologic/DMARD Safety Evaluation | 355 | 99th | $51 – $70 |
| 20610 | Large Joint Synovial Arthrocentesis or Corticosteroid Injection | 162 | 96th | $41 – $56 |
| 96413 | Intravenous Biologic Infusion Therapy (First Hour) | 116 | 97th | $71 – $97 |
| 76881 | Complete Joint Synovitis High-Resolution Ultrasound | 77 | 99.5th | $54 – $73 |
| 99204 | New Patient Autoimmune & Rheumatology Diagnostic Workup | 62 | 99.5th | $71 – $97 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (15 HCPCS billing breadth) | 2,092 | 99th | $45 – $65 |
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Dr. Warren Ferris, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Ferris National Provider Identifier | NPI #1487744280 (MD) | CMS NPPES Registry (20906) |
| Dr. Ferris Silver Spring CMS Volume Rank | 99.00th Pct (2,864 CMS svcs; Z -0.815σ) | CMS Medicare Part B (MD Rheumatology) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Silver Spring, MD) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 16 min lobby wait | 14 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.59/5 Listening • 4.65/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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