Dr. Frederick Stack, MD
801 5th St, Sioux City, IA 51101 • +1-317-555-9057
Medical Education: Accredited U.S. Medical School (Class of 2011)
What This Doctor Actually Performs: CMS Medicare Utilization & Sioux City Percentiles
NPI #1548256977 • CBSA Regional • Internal Medicine
Dr. Frederick Stack, MD (NPI #1548256977) practices Internal Medicine in Sioux City, IA (51101) with sub-specialty concentration in 14 Active CMS HCPCS Codes, recording 676 annual CMS services across 253 distinct beneficiaries—placing this practice as a focused low-volume boutique caseload (0th Sioux City percentile) (-0.20σ vs IA state mean, 4.07th statewide percentile).
Dr. Stack's longitudinal care intensity (2.7 billed units per patient across 253 individuals) centers on 99214 (304 annual units) and 99213 ($114–$156 cash range).
Self-pay new patient consultations with Dr. Stack (CPT 99204 GPCI-adjusted benchmark) estimate around $209.00 (community reported average: $209.00) with hybrid in-clinic and telehealth video consults, 18-minute average reception wait, and a 4.85/5 modern protocol openness score across 22 patient logs.
Clinical background for Dr. Stack (MD, NPI #1548256977) includes accredited doctoral training (2011, 15 yrs in practice) and virtual + in-office availability across IA.
Compared against Sioux City, IA Internal Medicine peers
676 annual services across 253 beneficiaries
Standard deviations from IA 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 | 304 | 12th | $149 – $204 |
| 99213 | Established Preventive & Chronic Care Visit | 176 | 12th | $114 – $156 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 88 | 12th | $54 – $74 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 68 | 12th | $174 – $239 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 41 | 12th | $207 – $283 |
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Dr. Frederick Stack, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Stack National Provider Identifier | NPI #1548256977 (MD) | CMS NPPES Registry (51101) |
| Dr. Stack Sioux City CMS Volume Rank | 0.00th Pct (676 CMS svcs; Z -0.200σ) | CMS Medicare Part B (IA Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Sioux City, IA) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 18 min lobby wait | 22 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.75/5 Listening • 4.85/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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