Most of the metrics in the Trella Health Solutions are calculated from data connected to specific NPIs. So, for example, patient counts reflect all patients treated by the facility or physician identified in the row or table. This means that those patient counts, and any metric calculated from the same claims could reflect patients from different counties and even different states from the location of the facility or physician. For example, a hospice in Florida could have patients whose state of residence is Vermont. In a case like that, the patients counted for that hospice are from all over the country. Another example would be a cardiologist who examines scans for patients throughout the country.
In general, the choice between organizing by region or by NPI is based on the purpose of the table or metric.
There are two places where the metrics are compiled based on the patient's residence - the Market Share tables and Patient Classification data.
For the Market Share data the metrics are by state or county. Those tables include only patients who live in the chosen region, so they will not match counts in other tables. For example, in the images below you can see a contrast. The top image is the State Market Share table for the state of Pennsylvania. All counts are for patient stays and include only patients who reside in Pennsylvania. We have singled out the 2017-Q3 metrics for the Home Nursing Agency and Visiting Nurse Association. Note that the count of patient stays is 668, which represents 4.3% of the patient stays in PA for the reporting period. In the second image, we have included the Hospice Summary table for the same agency. The number in the rectangle is the total count of distinct patients treated by the agency during the listed quarter.
These number are presented differently to show different pictures through the metrics. On the one hand, Market Share tables reveal the part each agency has of the regional whole. Other tables that include distinct patient counts are directed to the flow of patients through the continuum of care, or the size of a patient population treated.
When looking at the Market Share: County metrics on agency detail pages, because the counts are based on location, you will often find counts that are far smaller than the patient counts in other tables. If the agency is located in one county, and most patients are from another county, the market share data will look smaller. (See Hospice Detail Page - Hospice Summary and Market Share: County - Why don't Patient Counts match?)
This section of data can be found on Physician Detail pages (both Solutions), Facility Detail Pages (both Solutions) and the Home Health Agency detail pages.
The data in the Patient Classification section includes a breakdown by ZIP code and County. These percentages, therefore, reflect the residence of the patients counted, not the location of the facility or physician on the page.