Dr. Diana Yao, MD
3833 Worsham Avenue, Suite 300, Long Beach, CA 90808 • +1-518-555-3550
Medical Education: Accredited U.S. Medical School (Class of 1995)
What This Doctor Actually Performs: CMS Medicare Utilization & Long Beach Percentiles
NPI #1588678833 • CBSA Regional • Gastroenterology
Anchored in Long Beach, CA 90808, Dr. Diana Yao, MD (NPI 1588678833) logged 757 annual procedures (focused low-volume boutique caseload (0th Long Beach percentile), 13.12th CA percentile, -0.34σ) with sub-specialty concentration in 20 Active CMS HCPCS Codes.
Granular CPT/HCPCS billing distribution at 3833 Worsham Avenue, Suite 300 shows Dr. Diana Yao's primary concentration in Established Gastroenterology, GERD & IBD Evaluation (code 99214: 280x/yr, 12th local percentile) alongside Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy (45380: 189x/yr, $578–$792).
Cash-pay intake data for NPI 1588678833 (3833 Worsham Avenue, Suite 300, Long Beach) indicates $239.00 typical out-of-pocket visit spend against a $239.00 locality benchmark, paired with 21-minute average reception wait and 4.44/5 biomarker openness.
Patients evaluating Dr. Diana Yao in ZIP 90808 note 31 years of post-doctoral tenure (null, 1995) alongside 1.6 annual CMS procedures per patient.
Compared against Long Beach, CA Gastroenterology peers
757 annual services across 479 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 | 280 | 12th | $240 – $329 |
| 45380 | Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy | 189 | 12th | $578 – $792 |
| 43239 | Upper GI Esophagogastroduodenoscopy (EGD) w/ Biopsy | 159 | 12th | $480 – $657 |
| 45385 | Colonoscopy w/ Snare Polypectomy Lesion Removal | 76 | 12th | $643 – $881 |
| 99204 | New Patient Digestive & Hepatology Consultation | 53 | 12th | $338 – $463 |
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Dr. Diana Yao, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Yao National Provider Identifier | NPI #1588678833 (MD) | CMS NPPES Registry (90808) |
| Dr. Yao Long Beach CMS Volume Rank | 0.00th Pct (757 CMS svcs; Z -0.335σ) | CMS Medicare Part B (CA Gastroenterology) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Long Beach, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 21 min lobby wait | 3 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.88/5 Listening • 4.44/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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