Dr. Kathleen Mahan, MD
1801 S Highland Ave Ste 130, Lombard, IL 60148 • +1-931-555-6562
Medical Education: Accredited U.S. Medical School (Class of 2000)
What This Doctor Actually Performs: CMS Medicare Utilization & Lombard Percentiles
NPI #1639100464 • CBSA Regional • Internal Medicine
Dr. Kathleen Mahan, MD (NPI #1639100464) practices Internal Medicine in Lombard, IL (60148) with sub-specialty concentration in 82 Active CMS HCPCS Codes, recording 2,056 annual CMS services across 173 distinct beneficiaries—placing this practice as a mid-cohort balanced caseload (57.89th Lombard percentile) (-0.11σ vs IL state mean, 66.31th statewide percentile).
Granular CPT/HCPCS billing distribution at 1801 S Highland Ave Ste 130 shows Dr. Kathleen Mahan's primary concentration in Moderate-to-High Complexity Internal Medicine Follow-Up (code 99214: 682x/yr, 57.89th local percentile) alongside Established Preventive & Chronic Care Visit (99213: 394x/yr, $46–$64).
Uninsured and high-deductible cash patients visiting Dr. Kathleen Mahan in Lombard (60148) face an estimated $218.00 initial evaluation fee at 1801 S Highland Ave Ste 130 (hybrid in-clinic and telehealth video consults; 19-minute average reception wait; bedside manner 4.91/5 from 5 verified reports).
NPI registry verification (#1639100464) confirms Dr. Kathleen Mahan's MD standing serving CBSA 60148 with a 4.66/5 patient scorecard.
Compared against Lombard, IL Internal Medicine peers
2,056 annual services across 173 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 | 682 | 57.89th | $61 – $83 |
| 99213 | Established Preventive & Chronic Care Visit | 394 | 60.89th | $46 – $64 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 197 | 55.89th | $25 – $40 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 152 | 56.89th | $71 – $98 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 91 | 54.89th | $84 – $116 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (82 HCPCS billing breadth) | 540 | 57.89th | $55 – $80 |
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Dr. Kathleen Mahan, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Mahan National Provider Identifier | NPI #1639100464 (MD) | CMS NPPES Registry (60148) |
| Dr. Mahan Lombard CMS Volume Rank | 57.89th Pct (2,056 CMS svcs; Z -0.109σ) | CMS Medicare Part B (IL Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $218.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Lombard, IL) |
| Waiting-Room Wait Time & Cash Friendliness | $218.00 avg paid • 19 min lobby wait | 5 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.91/5 Listening • 4.42/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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