Dr. Lewis Leng, MD
1100 Van Ness Ave, San Francisco, CA 94109 • +1-352-555-7349
Medical Education: Accredited U.S. Medical School (Class of 2009)
What This Doctor Actually Performs: CMS Medicare Utilization & San Francisco Percentiles
NPI #1508018508 • CBSA 41860 • Neurosurgery
Statistical peer benchmarking across CA Neurosurgery providers positions Dr. Lewis Leng, MD in San Francisco at -0.56σ (18.18th city percentile / 12.3th state percentile, 363 Medicare beneficiaries), with clinical focus spanning 79 Active CMS HCPCS Codes.
Medicare Part B line-item claims for Dr. Lewis Leng (94109) place 99214 at the top of the practice ledger (308 yearly units, 18.18th metro rank), rounded out by 99213 and 93000.
Cash-pay intake data for NPI 1508018508 (1100 Van Ness Ave, San Francisco) indicates $250.00 typical out-of-pocket visit spend against a $250.00 locality benchmark, paired with 10-minute average reception wait and 4.40/5 biomarker openness.
Spanning 17 years of clinical practice following 2009 graduation from medical training, Dr. Lewis Leng integrates 79 Active CMS HCPCS Codes diagnostics for San Francisco metro patients.
Compared against San Francisco, CA Neurosurgery peers
685 annual services across 363 beneficiaries
Standard deviations from CA Neurosurgery 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 | 308 | 18.18th | $612 – $839 |
| 99213 | Established Preventive & Chronic Care Visit | 178 | 23.18th | $468 – $642 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 89 | 19.18th | $224 – $306 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 69 | 18.18th | $719 – $985 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 41 | 18.18th | $852 – $1167 |
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Dr. Lewis Leng, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Leng National Provider Identifier | NPI #1508018508 (MD) | CMS NPPES Registry (94109) |
| Dr. Leng San Francisco CMS Volume Rank | 18.18th Pct (685 CMS svcs; Z -0.565σ) | CMS Medicare Part B (CA Neurosurgery) |
| Fair Cash-Pay New-Patient Benchmark | $250.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (San Francisco, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $250.00 avg paid • 10 min lobby wait | 20 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.90/5 Listening • 4.40/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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