Dr. Stephen Yoon, MD
101 E Valencia Mesa DR, Fullerton, CA 92835 • +1-407-555-4647
Medical Education: Accredited U.S. Medical School (Class of 1995)
What This Doctor Actually Performs: CMS Medicare Utilization & Fullerton Percentiles
NPI #1851327100 • CBSA Regional • Internal Medicine
CMS Medicare Part B utilization records credit Dr. Stephen Yoon (MD, NPI 1851327100) at 101 E Valencia Mesa DR in Fullerton with 675 annual clinical services (256 beneficiaries), corresponding to a -0.11σ regional deviation and focused low-volume boutique caseload (14.81th Fullerton percentile) with sub-specialty concentration in 11 Active CMS HCPCS Codes.
Medicare Part B line-item claims for Dr. Stephen Yoon (92835) place 99214 at the top of the practice ledger (304 yearly units, 14.81th metro rank), rounded out by 99213 and 93000.
Uninsured and high-deductible cash patients visiting Dr. Stephen Yoon in Fullerton (92835) face an estimated $239.00 initial evaluation fee at 101 E Valencia Mesa DR (in-person clinic visits only; 9-minute average reception wait; bedside manner 4.86/5 from 15 verified reports).
From 101 E Valencia Mesa DR in Fullerton (+1-407-555-4647), Dr. Yoon, MD (31-year clinical track record) delivers 11 Active CMS HCPCS Codes care.
Compared against Fullerton, CA Internal Medicine peers
675 annual services across 256 beneficiaries
Standard deviations from CA Internal Medicine 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 | 304 | 14.81th | $188 – $257 |
| 99213 | Established Preventive & Chronic Care Visit | 176 | 12th | $144 – $197 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 88 | 12th | $69 – $94 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 68 | 14.81th | $220 – $302 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 41 | 12th | $261 – $358 |
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Dr. Stephen Yoon, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Yoon National Provider Identifier | NPI #1851327100 (MD) | CMS NPPES Registry (92835) |
| Dr. Yoon Fullerton CMS Volume Rank | 14.81th Pct (675 CMS svcs; Z -0.109σ) | CMS Medicare Part B (CA Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Fullerton, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 9 min lobby wait | 15 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.86/5 Listening • 4.74/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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