Dr. Sara Lewin, MD
513 Parnassus Ave, Med Sci Room S357, San Francisco, CA 94143 • +1-894-555-5309
Medical Education: Accredited U.S. Medical School (Class of 2017)
What This Doctor Actually Performs: CMS Medicare Utilization & San Francisco Percentiles
NPI #1558627059 • CBSA 41860 • Gastroenterology
Dr. Sara Lewin, MD (NPI #1558627059) practices Gastroenterology in San Francisco, CA (94143) with sub-specialty concentration in 61 Active CMS HCPCS Codes, recording 3,859 annual CMS services across 299 distinct beneficiaries—placing this practice as a top-decile high-throughput specialist (96th percentile in San Francisco) (+0.47σ vs CA state mean, 92.65th statewide percentile).
Fee-schedule auditing of NPI 1558627059 highlights 1428 annual claims for 99214 (96th San Francisco percentile; $60–$82 self-pay corridor) plus 965 encounters under 45380 and 810 under 43239.
Uninsured and high-deductible cash patients visiting Dr. Sara Lewin in San Francisco (94143) face an estimated $250.00 initial evaluation fee at 513 Parnassus Ave, Med Sci Room S357 (hybrid in-clinic and telehealth video consults; 19-minute average reception wait; bedside manner 4.93/5 from 19 verified reports).
From 513 Parnassus Ave, Med Sci Room S357 in San Francisco (+1-894-555-5309), Dr. Lewin, MD (9-year clinical track record) delivers 61 Active CMS HCPCS Codes care.
Top 10% Gastroenterology volume leader in San Francisco, CA
3,859 annual services across 299 beneficiaries
Standard deviations from CA Gastroenterology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Established Gastroenterology, GERD & IBD Evaluation | 1,428 | 96th | $60 – $82 |
| 45380 | Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy | 965 | 95th | $144 – $197 |
| 43239 | Upper GI Esophagogastroduodenoscopy (EGD) w/ Biopsy | 810 | 93th | $119 – $163 |
| 45385 | Colonoscopy w/ Snare Polypectomy Lesion Removal | 386 | 98th | $160 – $219 |
| 99204 | New Patient Digestive & Hepatology Consultation | 270 | 99.5th | $84 – $115 |
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Dr. Sara Lewin, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Lewin National Provider Identifier | NPI #1558627059 (MD) | CMS NPPES Registry (94143) |
| Dr. Lewin San Francisco CMS Volume Rank | 96.00th Pct (3,859 CMS svcs; Z +0.475σ) | CMS Medicare Part B (CA Gastroenterology) |
| 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 • 19 min lobby wait | 19 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.93/5 Listening • 4.47/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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