CheckTheWait Data Methodology & Telemetry Framework
A comprehensive, transparent audit of how emergency department and urgent care facility data is ingested, verified, and audited. Grounded in direct electronic health record (EHR) feeds, federal CMS quality measures, and clinical triage realities.
Critical Medical Emergency Notice — Call 911 Immediately
CheckTheWait is an informational directory and public utility designed to assist with non-emergent logistics, urgent care routing, and healthcare access. If you or someone you are with is experiencing a potential life- or limb-threatening medical emergency, call 911 immediately or go to the nearest emergency department.
Direct EHR Ingestion
We interface directly with hospital EHR systems via reverse-engineered HTTPS endpoints (e.g. Epic MyChart GetOnMyWayDepartmentData) with 0ms headless overhead.
Zero-Fabrication Mandate
If an emergency department does not publish an official EHR or live telemetry feed, we explicitly display “Not Reported”. We strictly refuse to invent synthetic or simulated wait estimates.
Acuity-Based Triage (ESI)
Emergency medicine does not operate on first-come, first-served queues. We educate patients on the 5-tier Emergency Severity Index (ESI) and EMTALA federal non-discrimination statutes.
Direct Electronic Health Record (EHR) Telemetry: Epic MyChart
Real-time machine-to-machine queue ingestion without browser overhead
Unlike commercial directories that rely on manual user polls or third-party web scraping farms, CheckTheWait utilizes a proprietary direct HTTP ingestion client engineered for major healthcare electronic health records (EHR).
For participating health networks—including UnityPoint Health across Iowa, Illinois, and Wisconsin, and Genesis Health System / MercyOne in the Quad Cities corridor—our backend interacts directly with authenticated Epic MyChart patient-scheduling endpoints:
What Is Ingested
- Exact waiting room queue delay in whole minutes
- Number of current “On My Way” patient slots available
- Facility open/closed operational status in real-time
- Department-specific address, specialty, and provider tier
Zero-Latency Architecture
- 0ms headless Chromium/browser launch latency
- Direct Node.js native fetch streaming
- Synchronized every 5 minutes during operating clinic hours
- Strict rate limits adhering to hospital server health
Direct Verification: Hospital-Published Triage Lines
Telephone verification protocols for clinical emergency departments
While urgent care centers frequently operate digital check-in lines and EHR-connected queues, full-scale hospital emergency departments (Level I through Level IV trauma centers) operate under strict emergency triage protocols where public digital queues are deliberately omitted to avoid endangering patients.
To maintain accuracy for hospital emergency rooms, CheckTheWait pairs automated directory data with direct telephone verification of published triage desks:
We maintain direct telephone routing to the hospital's published emergency triage intake rather than generic PBX switchboards, allowing caregivers and EMS coordinators to verify bed availability or pediatric capabilities.
Trauma center levels (Level I, Level II, Level III, and Pediatric Level I/II) are verified against official state Department of Public Health registries and the American College of Surgeons (ACS) Committee on Trauma verification database.
Federal CMS Telemetry: Medicare Hospital Compare & OP-18b
Standardized historical throughput benchmarks for clinical baseline context
To provide objective long-term context beyond temporary minute-by-minute fluctuations, CheckTheWait incorporates official federal performance data from the Centers for Medicare & Medicaid Services (CMS) Hospital Outpatient Quality Reporting (OQR) program.
CMS Measure OP-18b Definition
OP-18b: “Median time (in minutes) from emergency department arrival to emergency department departure for discharged emergency department patients.”
This metric captures the comprehensive throughput efficiency of an emergency facility—measuring door-to-registration, triage evaluation, physician diagnostic workup, laboratory/imaging turnaround, and final discharge.
How CheckTheWait Implements CMS Data
- Clear Separation of Live vs. Historical Telemetry: CMS OP-18b is never presented as a live waiting room minute count. It is clearly labeled as federal annual benchmark data reflecting overall departmental throughput.
- Comparative Regional Context: Users can evaluate whether a facility typically operates above or below state and national median ED throughput times.
- Anti-Deception Standard: We deliberately do not average historical CMS times into live urgent care feeds to avoid skewing short-term triage decisions.
Strict Zero-Fabrication & Anti-Hallucination Mandate
Why we refuse to estimate or guess emergency room wait times
Many consumer applications and digital directories generate synthetic “estimated wait times” using statistical regression models, historical day-of-week averages, or cellular foot-traffic proxies.
Emergency department volumes are non-linear, stochastically driven, and governed by critical acuity surges. An algorithm predicting an “18-minute wait” because it is Tuesday afternoon cannot foresee a 4-car highway collision that suddenly diverts all attending trauma surgeons and resuscitation bays. Misleading a patient into choosing a facility based on a synthetic guess can cause catastrophic delays in medical care.
Our Zero-Fabrication Operating Rules:
When a facility does not publish a live EHR feed or official public triage telemetry, CheckTheWait explicitly labels the wait time as “Not Reported” rather than populating a simulated estimate.
We strictly prohibit synthetic countdown timers, randomized jitter, or “typical wait” badges disguised as real-time waiting room statuses.
Crowdsourced patient reports must be geoverified within hospital boundary coordinates. User reports automatically decay exponentially with a strict 120-minute half-life, ensuring no outdated reports influence the platform.
Every data point is marked with its exact origin: Verified Epic EHR API, Direct Hospital Feed, CMS Federal Benchmark, or Geoverified Community Report.
Clinical Realities: EMTALA & Emergency Severity Index (ESI)
Why emergency departments prioritize patient acuity over arrival order
A fundamental tenet of medical education that every patient and caregiver must understand is that emergency rooms do NOT operate on a first-come, first-served (FIFO) basis.
The EMTALA Federal Mandate (42 U.S.C. § 1395dd)
Enacted by Congress in 1986, the Emergency Medical Treatment and Active Labor Act (EMTALA) mandates that any hospital participating in Medicare must provide a dedicated Medical Screening Examination (MSE) to any individual presenting to the emergency department, regardless of citizenship, legal status, or ability to pay. If an emergency medical condition exists, the hospital is legally required to stabilize the patient or execute an appropriate transfer.
The 5 Levels of the Emergency Severity Index (ESI)
Triage registered nurses categorize patients upon arrival into one of five acuity tiers defined by the Agency for Healthcare Research and Quality (AHRQ):
| Acuity Tier | Clinical Severity | Clinical Examples | Triage Protocol |
|---|---|---|---|
| ESI Level 1 | Resuscitation (Immediate) | Cardiac arrest, severe respiratory arrest, massive trauma, anaphylaxis | Immediate bed placement (0 min wait) |
| ESI Level 2 | Emergent (High Risk) | Active chest pain, acute stroke symptoms, severe pain, suicidal ideation | Seen within minutes; priority over lower tiers |
| ESI Level 3 | Urgent (2+ Resources) | Suspected appendicitis, kidney stones, complex fracture, moderate asthma | Evaluated after Level 1 & 2 patients are stabilized |
| ESI Level 4 | Less Urgent (1 Resource) | Simple laceration requiring sutures, uncomplicated urinary tract infection | May be routed to fast-track or urgent care annex |
| ESI Level 5 | Non-Urgent (0 Resources) | Medication refills, minor rash, suture removal, chronic mild symptoms | Lowest priority; best served by outpatient clinics |
Key Takeaway: If you arrive at an emergency department with an ESI Level 4 condition (e.g. minor sprain) and four ambulances arrive with ESI Level 1 and 2 patients, your personal wait time will extend regardless of the queue number you received when walking in. CheckTheWait educates patients to prevent dangerous misunderstandings of emergency care workflows.
Hospital Administrator Verification & Corrections Portal
Official pipeline for health systems, chief medical officers, and informatics leads
CheckTheWait maintains open communication channels with healthcare network administrators, emergency department directors, and clinical informaticists. We actively welcome direct partnerships to improve patient transparency and reduce inappropriate non-emergent ED crowding.
Feed Integration
Integrate your hospital's official Epic MyChart, Cerner, or internal API wait time feed for real-time patient routing.
Triage Line Updates
Update published clinical triage numbers, direct ambulance intake routes, or fast-track operational hours.
Trauma Verification
Submit updated ACS trauma verification certificates, pediatric readiness badges, or specialty stroke/STEMI centers.
Corrections and verified institutional feeds are audited and updated within 24–48 hours.