Dr. Winnie Nhan, DO
430 Pennsylvania Ave Ste 310, Glen Ellyn, IL 60137 • +1-951-555-2021
Medical Education: Accredited U.S. Medical School (Class of 1999)
What This Doctor Actually Performs: CMS Medicare Utilization & Glen Ellyn Percentiles
NPI #1245681709 • CBSA Regional • Endocrinology
Dr. Winnie Nhan, DO (NPI #1245681709) practices Endocrinology in Glen Ellyn, IL (60137) with sub-specialty concentration in 54 Active CMS HCPCS Codes, recording 12,395 annual CMS services across 376 distinct beneficiaries—placing this practice as a focused low-volume boutique caseload (0th Glen Ellyn percentile) (+1.24σ vs IL state mean, 90.38th statewide percentile).
Dr. Nhan's longitudinal care intensity (33.0 billed units per patient across 376 individuals) centers on 99214 (1341 annual units) and 95251 ($29–$44 cash range).
Direct cash-pay transparency modeling sets Dr. Nhan's baseline new-consult rate near $218.00 in Glen Ellyn, IL (cash-pay accepted, hybrid in-clinic and telehealth video consults, 12-minute average reception wait).
From 430 Pennsylvania Ave Ste 310 in Glen Ellyn (+1-951-555-2021), Dr. Nhan, DO (27-year clinical track record) delivers 54 Active CMS HCPCS Codes care.
Compared against Glen Ellyn, IL Endocrinology peers
12,395 annual services across 376 beneficiaries
Standard deviations from IL Endocrinology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Complex Endocrine, Thyroid & Metabolic Biomarker Management | 1,341 | 12th | $47 – $65 |
| 95251 | Ambulatory Continuous Glucose Monitoring (CGM) Data Analysis | 671 | 12th | $29 – $44 |
| 76536 | High-Resolution Thyroid & Parathyroid Neck Ultrasound | 488 | 12th | $57 – $78 |
| 99204 | Comprehensive New Patient Endocrine & Hormone Workup | 366 | 12th | $65 – $89 |
| 99215 | High-Complexity Multi-Hormone & Insulin Pump Titration | 183 | 12th | $73 – $100 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (54 HCPCS billing breadth) | 9,347 | 0th | $45 – $65 |
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Dr. Winnie Nhan, DO Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Nhan National Provider Identifier | NPI #1245681709 (DO) | CMS NPPES Registry (60137) |
| Dr. Nhan Glen Ellyn CMS Volume Rank | 0.00th Pct (12,395 CMS svcs; Z +1.243σ) | CMS Medicare Part B (IL Endocrinology) |
| Fair Cash-Pay New-Patient Benchmark | $218.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Glen Ellyn, IL) |
| Waiting-Room Wait Time & Cash Friendliness | $218.00 avg paid • 12 min lobby wait | 16 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.74/5 Listening • 4.46/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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