Dr. Shannon Mackay, DO
7700 S Broadway, Littleton, CO 80122 • +1-709-555-9254
Medical Education: Accredited U.S. Medical School (Class of 1992)
What This Doctor Actually Performs: CMS Medicare Utilization & Littleton Percentiles
NPI #1235585548 • CBSA Regional • Hospitalist
Within the Littleton, CO (CBSA local) Hospitalist cohort, Dr. Shannon Mackay, DO with sub-specialty concentration in 10 Active CMS HCPCS Codes ranks at the 99th municipal percentile and 44.62th CO percentile (-0.47σ Z-score) based on 704 billed procedures for 356 patients.
Among 5 tracked CMS fee-schedule codes for Dr. Mackay (averaging 2.0 services per beneficiary), 99214 (Moderate-to-High Complexity Internal Medicine Follow-Up) represents 45% of tracked volume (317 encounters), paired with 99213 (183x).
Cash-pay intake data for NPI 1235585548 (7700 S Broadway, Littleton) indicates $211.00 typical out-of-pocket visit spend against a $211.00 locality benchmark, paired with 18-minute average reception wait and 4.44/5 biomarker openness.
Credentialed as an DO specialist with 34 years post-graduation experience since completing medical school at an LCME/COCA institution (1992), Dr. Mackay coordinates 10 Active CMS HCPCS Codes workups from 7700 S Broadway (+1-709-555-9254).
Top 10% Hospitalist volume leader in Littleton, CO
704 annual services across 356 beneficiaries
Standard deviations from CO Hospitalist 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 | 317 | 99th | $192 – $264 |
| 99213 | Established Preventive & Chronic Care Visit | 183 | 99.5th | $147 – $202 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 92 | 99.5th | $70 – $96 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 70 | 94th | $226 – $309 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 42 | 94th | $268 – $367 |
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Dr. Shannon Mackay, DO Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Mackay National Provider Identifier | NPI #1235585548 (DO) | CMS NPPES Registry (80122) |
| Dr. Mackay Littleton CMS Volume Rank | 99.00th Pct (704 CMS svcs; Z -0.472σ) | CMS Medicare Part B (CO Hospitalist) |
| Fair Cash-Pay New-Patient Benchmark | $211.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Littleton, CO) |
| Waiting-Room Wait Time & Cash Friendliness | $211.00 avg paid • 18 min lobby wait | 12 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.77/5 Listening • 4.44/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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