Dr. Marshall Leonard, MD
100 Nicolls Rd, Hsc, L4 Rm 50, Stony Brook, NY 11794 • +1-680-555-8285
Medical Education: Accredited U.S. Medical School (Class of 1999)
What This Doctor Actually Performs: CMS Medicare Utilization & Stony Brook Percentiles
NPI #1902255318 • CBSA Regional • Emergency Medicine
Dr. Marshall Leonard, MD (NPI #1902255318) practices Emergency Medicine in Stony Brook, NY (11794) with sub-specialty concentration in 30 Active CMS HCPCS Codes, recording 700 annual CMS services across 620 distinct beneficiaries—placing this practice as a focused low-volume boutique caseload (14.71th Stony Brook percentile) (-0.14σ vs NY state mean, 18.92th statewide percentile).
Dr. Leonard's longitudinal care intensity (1.1 billed units per patient across 620 individuals) centers on 99214 (315 annual units) and 99213 ($239–$327 cash range).
For out-of-network patients contacting +1-680-555-8285, Dr. Leonard's practice posts a $232.00 GPCI self-pay consult estimate ($232.00 patient-logged median, 4.71/5 composite reality score over 10 submissions).
Spanning 27 years of clinical practice following 1999 graduation from medical training, Dr. Marshall Leonard integrates 30 Active CMS HCPCS Codes diagnostics for Stony Brook metro patients.
Compared against Stony Brook, NY Emergency Medicine peers
700 annual services across 620 beneficiaries
Standard deviations from NY 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 | 315 | 14.71th | $312 – $428 |
| 99213 | Established Preventive & Chronic Care Visit | 182 | 14.71th | $239 – $327 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 91 | 12.71th | $114 – $156 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 70 | 12.71th | $366 – $502 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 42 | 16.71th | $434 – $595 |
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Dr. Marshall Leonard, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Leonard National Provider Identifier | NPI #1902255318 (MD) | CMS NPPES Registry (11794) |
| Dr. Leonard Stony Brook CMS Volume Rank | 14.71th Pct (700 CMS svcs; Z -0.141σ) | CMS Medicare Part B (NY Emergency Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $232.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Stony Brook, NY) |
| Waiting-Room Wait Time & Cash Friendliness | $232.00 avg paid • 10 min lobby wait | 10 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.70/5 Listening • 4.84/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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