- What is healthcare access in terms of drive time?
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Healthcare access is measured by the drive time from a patient's residence to the
nearest healthcare facility. The federal standard designates any area where residents
must drive more than 30 minutes to a primary care provider as a Health Professional
Shortage Area (HPSA). For practical facility planning, 15 minutes is the widely
accepted threshold for primary care access, and 10 minutes or less is the target
for urgent care in competitive markets. Drive-time measurement is more accurate than
distance because it accounts for road network geometry, traffic, and geographic barriers.
- How far do patients drive to urgent care?
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Urgent care patients typically drive 5 to 15 minutes, with the median around
8–10 minutes in suburban markets. Urban markets see shorter accepted drive times
(5–8 minutes) due to higher facility density and traffic deterrence. Rural markets
see longer drive times (15–25 minutes) by necessity. The practical implication
for siting: a new urgent care center needs sufficient population within a 10-minute
drive to be viable — measured on real road networks, not as a radius.
- What is the standard service area for a hospital?
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Hospital primary service areas are typically defined by a 15- to 30-minute drive time,
capturing 60–70% of inpatient volume. Secondary service areas extend to 30–60 minutes.
For outpatient and ambulatory services, the primary service area contracts to 10–15
minutes. Emergency services draw from a tighter geographic area than elective specialty
services, which may attract patients from 60+ minutes away. Service area boundaries
should always be defined by drive-time polygons on real road networks, not radius
circles, to accurately reflect geographic access.
- How do I analyze healthcare market access?
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Healthcare market access analysis involves four steps: (1) Generate drive-time isochrones
from candidate facility locations at 5, 10, 15, and 30 minutes to define primary and
secondary service areas. (2) Measure the population within each polygon, segmented by
age group (particularly 65+) and income level. (3) Count existing competitor facilities
within each zone and calculate population-per-facility ratios. (4) Evaluate geographic
coverage gaps — areas with significant population but no facility within a clinically
appropriate drive time. DriveZone supports all four steps with real routing data and
Census demographic overlays.