Dr. Mazen Diab, MD
17495 LA Grange Rd, Tinley Park, IL 60487 • +1-929-555-7014
Medical Education: Accredited U.S. Medical School (Class of 1992)
What This Doctor Actually Performs: CMS Medicare Utilization & Tinley Park Percentiles
NPI #1134436819 • CBSA Regional • Internal Medicine
Operating out of Tinley Park, IL (17495 LA Grange Rd), Internal Medicine clinician Dr. Mazen Diab, MD (accredited MD/DO training, 1992) maintains a mid-cohort balanced caseload (36.36th Tinley Park percentile) (73.19th IL percentile; Z-score -0.07σ across 2,548 documented services) with sub-specialty concentration in 24 Active CMS HCPCS Codes.
Procedural volume for Dr. Diab is led by HCPCS 99214 (Moderate-to-High Complexity Internal Medicine Follow-Up — 1147 annual services, $222–$304 GPCI cash estimate), followed by CPT 99213 (Established Preventive & Chronic Care Visit, 662/yr) and CPT 93000 (In-Office 12-Lead Resting Electrocardiogram, 331/yr).
Cash-pay intake data for NPI 1134436819 (17495 LA Grange Rd, Tinley Park) indicates $218.00 typical out-of-pocket visit spend against a $218.00 locality benchmark, paired with 16-minute average reception wait and 4.40/5 biomarker openness.
Clinical background for Dr. Diab (MD, NPI #1134436819) includes accredited doctoral training (1992, 34 yrs in practice) and dedicated on-site consultations at 17495 LA Grange Rd.
Compared against Tinley Park, IL Internal Medicine peers
2,548 annual services across 335 beneficiaries
Standard deviations from IL 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 | 1,147 | 36.36th | $222 – $304 |
| 99213 | Established Preventive & Chronic Care Visit | 662 | 41.36th | $170 – $233 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 331 | 31.36th | $81 – $111 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 255 | 39.36th | $260 – $357 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 153 | 35.36th | $309 – $423 |
Are you Dr. Mazen Diab? Embed your Official DotMD Verification Badge (0-JS SVG)
Paste this lightweight SVG snippet onto your clinic bio page in Tinley Park, IL:
<a href="https://dotmd.com/doctors/mazen-diab-md-tinley-park-il-1134436819" title="Dr. Mazen Diab, MD - Verified CMS Utilization on DotMD"><img src="https://dotmd.com/badges/npi/1134436819.svg" alt="Dr. Mazen Diab Internal Medicine Badge" width="280" height="72" /></a>
Dr. Mazen Diab, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Diab National Provider Identifier | NPI #1134436819 (MD) | CMS NPPES Registry (60487) |
| Dr. Diab Tinley Park CMS Volume Rank | 36.36th Pct (2,548 CMS svcs; Z -0.066σ) | CMS Medicare Part B (IL Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $218.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Tinley Park, IL) |
| Waiting-Room Wait Time & Cash Friendliness | $218.00 avg paid • 16 min lobby wait | 6 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.73/5 Listening • 4.40/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
Ask our AI Specialists anything about Dr. Mazen Diab
Other High-Volume Internal Medicine Specialists in Tinley Park, IL
Ranked strictly by CMS Medicare volumeDr. Diab Waiting-Room Q&A & Patient Experience Logs
Anonymous patient-submitted wait times, cash visit fees, and bedside manner discussions in Tinley Park, IL.
Share your self-pay visit cost and lobby wait time—no account, email, or IP stored.
Filter Dr. Mazen Diab community threads and patient logs by age, biological sex, dosage, and treatment duration.