Dr. Shannon O'mahar, MD
1200 John Q Hammons DR, Suite 400, Madison, WI 53717 • +1-318-555-5279
Medical Education: Accredited U.S. Medical School (Class of 1998)
What This Doctor Actually Performs: CMS Medicare Utilization & Madison Percentiles
NPI #1366569899 • CBSA Regional • Hematology-Oncology
Operating out of Madison, WI (1200 John Q Hammons DR, Suite 400), Hematology-Oncology clinician Dr. Shannon O'mahar, MD (accredited MD/DO training, 1998) maintains a upper-quartile active clinical volume (88.89th Madison percentile) (95.88th WI percentile; Z-score +1.79σ across 103,230 documented services) with sub-specialty concentration in 141 Active CMS HCPCS Codes.
Procedural volume for Dr. O'mahar is led by HCPCS 99214 (Moderate-to-High Complexity Internal Medicine Follow-Up — 1823 annual services, $47–$64 GPCI cash estimate), followed by CPT 99213 (Established Preventive & Chronic Care Visit, 1053/yr) and CPT 93000 (In-Office 12-Lead Resting Electrocardiogram, 527/yr).
For out-of-network patients contacting +1-318-555-5279, Dr. O'mahar's practice posts a $209.00 GPCI self-pay consult estimate ($209.00 patient-logged median, 4.79/5 composite reality score over 6 submissions).
From 1200 John Q Hammons DR, Suite 400 in Madison (+1-318-555-5279), Dr. O'mahar, MD (28-year clinical track record) delivers 141 Active CMS HCPCS Codes care.
Compared against Madison, WI Hematology-Oncology peers
103,230 annual services across 491 beneficiaries
Standard deviations from WI Hematology-Oncology 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 | 1,823 | 88.89th | $47 – $64 |
| 99213 | Established Preventive & Chronic Care Visit | 1,053 | 89.89th | $36 – $51 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 527 | 84.89th | $25 – $40 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 405 | 86.89th | $55 – $75 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 243 | 88.89th | $65 – $89 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (141 HCPCS billing breadth) | 99,179 | 88.89th | $45 – $65 |
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Dr. Shannon O'mahar, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. O'mahar National Provider Identifier | NPI #1366569899 (MD) | CMS NPPES Registry (53717) |
| Dr. O'mahar Madison CMS Volume Rank | 88.89th Pct (103,230 CMS svcs; Z +1.789σ) | CMS Medicare Part B (WI Hematology-Oncology) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Madison, WI) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 22 min lobby wait | 6 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.79/5 Listening • 4.80/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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