Dr. Justin Mao, MD
3825 Highland Ave Fl Tower24, Downers Grove, IL 60515 • +1-760-555-3924
Medical Education: Accredited U.S. Medical School (Class of 1998)
What This Doctor Actually Performs: CMS Medicare Utilization & Downers Grove Percentiles
NPI #1427052273 • CBSA Regional • Clinical Cardiac Electrophysiology
CMS Medicare Part B utilization records credit Dr. Justin Mao (MD, NPI 1427052273) at 3825 Highland Ave Fl Tower24 in Downers Grove with 3,277 annual clinical services (1,292 beneficiaries), corresponding to a -0.51σ regional deviation and focused low-volume boutique caseload (0th Downers Grove percentile) with sub-specialty concentration in 75 Active CMS HCPCS Codes.
Procedural volume for Dr. Mao is led by HCPCS 99214 (Moderate-to-High Complexity Internal Medicine Follow-Up — 1475 annual services, $154–$211 GPCI cash estimate), followed by CPT 99213 (Established Preventive & Chronic Care Visit, 852/yr) and CPT 93000 (In-Office 12-Lead Resting Electrocardiogram, 426/yr).
Direct cash-pay transparency modeling sets Dr. Mao's baseline new-consult rate near $218.00 in Downers Grove, IL (cash-pay accepted, in-person clinic visits only, 22-minute average reception wait).
Patients evaluating Dr. Justin Mao in ZIP 60515 note 28 years of post-doctoral tenure (null, 1998) alongside 2.5 annual CMS procedures per patient.
Compared against Downers Grove, IL Clinical Cardiac Electrophysiology peers
3,277 annual services across 1,292 beneficiaries
Standard deviations from IL Clinical Cardiac Electrophysiology 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 | 1,475 | 12th | $154 – $211 |
| 99213 | Established Preventive & Chronic Care Visit | 852 | 12th | $118 – $161 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 426 | 12th | $56 – $77 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 328 | 12th | $180 – $247 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 197 | 12th | $214 – $293 |
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Dr. Justin Mao, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Mao National Provider Identifier | NPI #1427052273 (MD) | CMS NPPES Registry (60515) |
| Dr. Mao Downers Grove CMS Volume Rank | 0.00th Pct (3,277 CMS svcs; Z -0.512σ) | CMS Medicare Part B (IL Clinical Cardiac Electrophysiology) |
| Fair Cash-Pay New-Patient Benchmark | $218.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Downers Grove, IL) |
| Waiting-Room Wait Time & Cash Friendliness | $218.00 avg paid • 22 min lobby wait | 18 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.68/5 Listening • 4.92/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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