Dr. William Halligan, MD
1005 Grove Rd, Greenville, SC 29605 • +1-520-555-1760
Medical Education: Accredited U.S. Medical School (Class of 2013)
What This Doctor Actually Performs: CMS Medicare Utilization & Greenville Percentiles
NPI #1255698163 • CBSA Regional • Cardiology
Operating out of Greenville, SC (1005 Grove Rd), Cardiology clinician Dr. William Halligan, MD (accredited MD/DO training, 2013) maintains a focused low-volume boutique caseload (30.3th Greenville percentile) (29.44th SC percentile; Z-score -0.63σ across 2,748 documented services) with sub-specialty concentration in 34 Active CMS HCPCS Codes.
Medicare Part B line-item claims for Dr. William Halligan (29605) place 99214 at the top of the practice ledger (1044 yearly units, 30.3th metro rank), rounded out by 93000 and 93306.
Cash-pay intake data for NPI 1255698163 (1005 Grove Rd, Greenville) indicates $209.00 typical out-of-pocket visit spend against a $209.00 locality benchmark, paired with 20-minute average reception wait and 4.64/5 biomarker openness.
Credentialed as an MD specialist with 13 years post-graduation experience since completing medical school at an LCME/COCA institution (2013), Dr. Halligan coordinates 34 Active CMS HCPCS Codes workups from 1005 Grove Rd (+1-520-555-1760).
Compared against Greenville, SC Cardiology peers
2,748 annual services across 1,353 beneficiaries
Standard deviations from SC Cardiology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Established Cardiology Consultation & Hemodynamic Review | 1,044 | 30.3th | $97 – $132 |
| 93000 | 12-Lead Resting Electrocardiogram (ECG) w/ Interpretation | 769 | 28.3th | $38 – $53 |
| 93306 | Complete Transthoracic Echocardiography w/ Doppler & Color Flow | 495 | 30.3th | $181 – $247 |
| 93224 | 24-Hour Ambulatory ECG Rhythm Monitoring & Analysis | 275 | 31.3th | $113 – $155 |
| 99204 | Comprehensive New Patient Cardiovascular Risk Evaluation | 165 | 35.3th | $139 – $190 |
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Dr. William Halligan, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Halligan National Provider Identifier | NPI #1255698163 (MD) | CMS NPPES Registry (29605) |
| Dr. Halligan Greenville CMS Volume Rank | 30.30th Pct (2,748 CMS svcs; Z -0.625σ) | CMS Medicare Part B (SC Cardiology) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Greenville, SC) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 20 min lobby wait | 24 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.96/5 Listening • 4.64/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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