Dr. Theresa Thanh Nguyen, MD
15576 Brookhurst St Ste B, Westminster, CA 92683 • +1-519-555-9162
Medical Education: Accredited U.S. Medical School (Class of 2005)
What This Doctor Actually Performs: CMS Medicare Utilization & Westminster Percentiles
NPI #1003893801 • CBSA Regional • Internal Medicine
Statistical peer benchmarking across CA Internal Medicine providers positions Dr. Theresa Thanh Nguyen, MD in Westminster at -0.02σ (48.48th city percentile / 79.36th state percentile, 463 Medicare beneficiaries), with clinical focus spanning 20 Active CMS HCPCS Codes.
Medicare Part B line-item claims for Dr. Theresa Thanh Nguyen (92683) place 99214 at the top of the practice ledger (1545 yearly units, 48.48th metro rank), rounded out by 99213 and 93000.
For out-of-network patients contacting +1-519-555-9162, Dr. Nguyen's practice posts a $239.00 GPCI self-pay consult estimate ($239.00 patient-logged median, 4.88/5 composite reality score over 7 submissions).
NPI registry verification (#1003893801) confirms Dr. Theresa Thanh Nguyen's MD standing serving CBSA 92683 with a 4.88/5 patient scorecard.
Compared against Westminster, CA Internal Medicine peers
3,664 annual services across 463 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 | 1,545 | 48.48th | $126 – $173 |
| 99213 | Established Preventive & Chronic Care Visit | 893 | 48.48th | $97 – $132 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 446 | 52.48th | $46 – $63 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 343 | 45.48th | $148 – $203 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 206 | 47.48th | $176 – $241 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (20 HCPCS billing breadth) | 231 | 48.48th | $114 – $165 |
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Dr. Theresa Thanh Nguyen, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Nguyen National Provider Identifier | NPI #1003893801 (MD) | CMS NPPES Registry (92683) |
| Dr. Nguyen Westminster CMS Volume Rank | 48.48th Pct (3,664 CMS svcs; Z -0.021σ) | CMS Medicare Part B (CA Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Westminster, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 15 min lobby wait | 7 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.85/5 Listening • 4.46/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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