Dr. Tonya An, MD
300 Pasteur DR, Stanford, CA 94305 • +1-710-555-6122
Medical Education: Accredited U.S. Medical School (Class of 2005)
What This Doctor Actually Performs: CMS Medicare Utilization & Stanford Percentiles
NPI #1699292045 • CBSA Regional • Orthopedic Surgery
Statistical peer benchmarking across CA Orthopedic Surgery providers positions Dr. Tonya An, MD in Stanford at -0.35σ (36th city percentile / 27.5th state percentile, 410 Medicare beneficiaries), with clinical focus spanning 87 Active CMS HCPCS Codes.
Procedural volume for Dr. An is led by HCPCS 99213 (Focused Orthopedic Joint & Spine Mobility Evaluation — 355 annual services, $207–$284 GPCI cash estimate), followed by CPT 20610 (Major Joint (Knee/Shoulder/Hip) Aspiration or Injection, 266/yr) and CPT 73562 (Radiologic Weight-Bearing 3-View Knee Examination, 187/yr).
Self-pay new patient consultations with Dr. An (CPT 99204 GPCI-adjusted benchmark) estimate around $239.00 (community reported average: $239.00) with hybrid in-clinic and telehealth video consults, 21-minute average reception wait, and a 4.64/5 modern protocol openness score across 13 patient logs.
Spanning 21 years of clinical practice following 2005 graduation from medical training, Dr. Tonya An integrates 87 Active CMS HCPCS Codes diagnostics for Stanford metro patients.
Compared against Stanford, CA Orthopedic Surgery peers
1,309 annual services across 410 beneficiaries
Standard deviations from CA Orthopedic Surgery mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99213 | Focused Orthopedic Joint & Spine Mobility Evaluation | 355 | 36th | $207 – $284 |
| 20610 | Major Joint (Knee/Shoulder/Hip) Aspiration or Injection | 266 | 33th | $220 – $302 |
| 73562 | Radiologic Weight-Bearing 3-View Knee Examination | 187 | 37th | $124 – $170 |
| 99203 | New Patient Musculoskeletal Injury & Surgical Triage | 108 | 33th | $297 – $407 |
| 27447 | Total Knee Arthroplasty Joint Reconstruction | 69 | 40th | $1912 – $2621 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (87 HCPCS billing breadth) | 324 | 36th | $233 – $338 |
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Dr. Tonya An, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. An National Provider Identifier | NPI #1699292045 (MD) | CMS NPPES Registry (94305) |
| Dr. An Stanford CMS Volume Rank | 36.00th Pct (1,309 CMS svcs; Z -0.346σ) | CMS Medicare Part B (CA Orthopedic Surgery) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Stanford, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 21 min lobby wait | 13 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.86/5 Listening • 4.64/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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