Dr. Mark Diamond, DO
2100 Glenwood Ave, Joliet, IL 60435 • +1-446-555-4004
Medical Education: Accredited U.S. Medical School (Class of 1994)
What This Doctor Actually Performs: CMS Medicare Utilization & Joliet Percentiles
NPI #1265402804 • CBSA Regional • Internal Medicine
Dr. Mark Diamond, DO (NPI #1265402804) practices Internal Medicine in Joliet, IL (60435) with sub-specialty concentration in 12 Active CMS HCPCS Codes, recording 1,096 annual CMS services across 336 distinct beneficiaries—placing this practice as a focused low-volume boutique caseload (24.14th Joliet percentile) (-0.19σ vs IL state mean, 36.91th statewide percentile).
Among 5 tracked CMS fee-schedule codes for Dr. Diamond (averaging 3.3 services per beneficiary), 99214 (Moderate-to-High Complexity Internal Medicine Follow-Up) represents 45% of tracked volume (493 encounters), paired with 99213 (285x).
Self-pay new patient consultations with Dr. Diamond (CPT 99204 GPCI-adjusted benchmark) estimate around $218.00 (community reported average: $218.00) with hybrid in-clinic and telehealth video consults, 16-minute average reception wait, and a 4.77/5 modern protocol openness score across 20 patient logs.
From 2100 Glenwood Ave in Joliet (+1-446-555-4004), Dr. Diamond, DO (32-year clinical track record) delivers 12 Active CMS HCPCS Codes care.
Compared against Joliet, IL Internal Medicine peers
1,096 annual services across 336 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 | 493 | 24.14th | $202 – $277 |
| 99213 | Established Preventive & Chronic Care Visit | 285 | 19.14th | $155 – $212 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 142 | 21.14th | $74 – $101 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 110 | 24.14th | $237 – $325 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 66 | 27.14th | $281 – $385 |
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Dr. Mark Diamond, DO Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Diamond National Provider Identifier | NPI #1265402804 (DO) | CMS NPPES Registry (60435) |
| Dr. Diamond Joliet CMS Volume Rank | 24.14th Pct (1,096 CMS svcs; Z -0.192σ) | CMS Medicare Part B (IL Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $218.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Joliet, IL) |
| Waiting-Room Wait Time & Cash Friendliness | $218.00 avg paid • 16 min lobby wait | 20 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.75/5 Listening • 4.77/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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