Dr. Sung Yoo, MD
1900 S Brea Canyon Rd Unit B, Diamond Bar, CA 91765 • +1-449-555-2077
Medical Education: Accredited U.S. Medical School (Class of 2005)
What This Doctor Actually Performs: CMS Medicare Utilization & Diamond Bar Percentiles
NPI #1437141587 • CBSA Regional • Gastroenterology
Anchored in Diamond Bar, CA 91765, Dr. Sung Yoo, MD (NPI 1437141587) logged 1,059 annual procedures (top-decile high-throughput specialist (99th percentile in Diamond Bar), 39.24th CA percentile, -0.26σ) with sub-specialty concentration in 12 Active CMS HCPCS Codes.
Procedural volume for Dr. Yoo is led by HCPCS 99214 (Established Gastroenterology, GERD & IBD Evaluation — 392 annual services, $222–$305 GPCI cash estimate), followed by CPT 45380 (Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy, 265/yr) and CPT 43239 (Upper GI Esophagogastroduodenoscopy (EGD) w/ Biopsy, 222/yr).
Self-pay new patient consultations with Dr. Yoo (CPT 99204 GPCI-adjusted benchmark) estimate around $239.00 (community reported average: $239.00) with hybrid in-clinic and telehealth video consults, 16-minute average reception wait, and a 4.69/5 modern protocol openness score across 10 patient logs.
Patients evaluating Dr. Sung Yoo in ZIP 91765 note 21 years of post-doctoral tenure (null, 2005) alongside 2.0 annual CMS procedures per patient.
Top 10% Gastroenterology volume leader in Diamond Bar, CA
1,059 annual services across 517 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 | 392 | 99th | $222 – $305 |
| 45380 | Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy | 265 | 98th | $536 – $734 |
| 43239 | Upper GI Esophagogastroduodenoscopy (EGD) w/ Biopsy | 222 | 99.5th | $445 – $609 |
| 45385 | Colonoscopy w/ Snare Polypectomy Lesion Removal | 106 | 99.5th | $596 – $817 |
| 99204 | New Patient Digestive & Hepatology Consultation | 74 | 98th | $313 – $429 |
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Dr. Sung Yoo, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Yoo National Provider Identifier | NPI #1437141587 (MD) | CMS NPPES Registry (91765) |
| Dr. Yoo Diamond Bar CMS Volume Rank | 99.00th Pct (1,059 CMS svcs; Z -0.257σ) | CMS Medicare Part B (CA Gastroenterology) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Diamond Bar, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 16 min lobby wait | 10 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.55/5 Listening • 4.69/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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