Dr. Yi-Jen Chen, MD
1500 E Duarte Rd, Duarte, CA 91010 • +1-838-555-6974
Medical Education: Accredited U.S. Medical School (Class of 2003)
What This Doctor Actually Performs: CMS Medicare Utilization & Duarte Percentiles
NPI #1972698868 • CBSA Regional • Radiation Oncology
Dr. Yi-Jen Chen, MD (NPI #1972698868) practices Radiation Oncology in Duarte, CA (91010) with sub-specialty concentration in 36 Active CMS HCPCS Codes, recording 1,079 annual CMS services across 106 distinct beneficiaries—placing this practice as a focused low-volume boutique caseload (8.33th Duarte percentile) (-0.60σ vs CA state mean, 15.57th statewide percentile).
Medicare Part B line-item claims for Dr. Yi-Jen Chen (91010) place 99214 at the top of the practice ledger (486 yearly units, 12th metro rank), rounded out by 99213 and 93000.
Self-pay new patient consultations with Dr. Chen (CPT 99204 GPCI-adjusted benchmark) estimate around $239.00 (community reported average: $239.00) with hybrid in-clinic and telehealth video consults, 11-minute average reception wait, and a 4.45/5 modern protocol openness score across 23 patient logs.
Patients evaluating Dr. Yi-Jen Chen in ZIP 91010 note 23 years of post-doctoral tenure (null, 2003) alongside 10.2 annual CMS procedures per patient.
Compared against Duarte, CA Radiation Oncology peers
1,079 annual services across 106 beneficiaries
Standard deviations from CA Radiation Oncology 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 | 486 | 12th | $207 – $284 |
| 99213 | Established Preventive & Chronic Care Visit | 281 | 12th | $158 – $217 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 140 | 12th | $76 – $104 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 108 | 12th | $243 – $333 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 65 | 12th | $288 – $395 |
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Dr. Yi-Jen Chen, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Chen National Provider Identifier | NPI #1972698868 (MD) | CMS NPPES Registry (91010) |
| Dr. Chen Duarte CMS Volume Rank | 8.33th Pct (1,079 CMS svcs; Z -0.604σ) | CMS Medicare Part B (CA Radiation Oncology) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Duarte, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 11 min lobby wait | 23 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.60/5 Listening • 4.45/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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