Geisinger

Geisinger Health System improves patient satisfaction and ROI

Geisinger Health System improves patient satisfaction through implementing an on-demand hospital meal logistics system with a 98% service level guarantee using SIMUL8 simulation software.

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Using SIMUL8 simulation software, Geisinger achieved:


Geisinger healthcare SIMUL8 results 1

Effective decision making - simulation results supported rapid decision making at each stage of the process

Geisinger healthcare SIMUL8 results 2

Improved service level - devised a model for on-demand food delivery, guaranteeing 98% of deliveries completed in under 45 minutes

Geisinger healthcare SIMUL8 results 3

Maximization of resources - identified a staffing schedule to achieve an optimal resource utilization rate of 88%

About the project

Serving more than 3 million patients each year across 44 counties, Geisinger Health System is one of America’s largest integrated health service organizations.

With the use of cutting edge technology and research at its core, Geisinger has gained global recognition for its outstanding levels of quality, patient service and innovation.

SIMUL8’s healthcare simulation software was utilized by Geisinger to explore the development and implementation of an on-demand hospital food service system to increase patient satisfaction and deliver return on investment.

In order to implement a new food delivery service across a complex network of 18 inpatient units, each containing multiple services with overlapping pathways, Geisinger required a tool capable of testing how system parameters would affect patient satisfaction levels and resource requirements. SIMUL8’s healthcare simulation software was chosen as a solution for rapid, risk-free testing of various combinations to uncover the most patient-centric, resource efficient food delivery system.

Lead Process Engineer Seth Hostetler and his process improvement team developed a two-phase simulation modeling approach to provide vital information and recommendations to help senior stakeholder decision making and successfully implement the system.


"We had three simple simulation objectives: create a representation of the new model; use this model to determine how the different parameters are going to affect the service levels as well as resource requirements; and finally, use this information to create initial recommendations for system changes."

- Seth Hostetler, Lead Process Engineer, Care Support Services Division at Geisinger Health System

Simulating the new system within the existing hallway network


Utilizing an existing simulation of Geisinger's hallway network from a previous process improvement project using SIMUL8, Seth and his team could easily add the proposed food delivery as a new component on this existing simulation. This also allowed the team to achieve a better understanding of how resources could be coordinated across departments and services.

Three key parameters were identified and tested using SIMUL8 to determine potential constraints on the system:

  • Service time expectation: how often patients received their meal within a designated time.

  • Resource utilization: how often delivery carts should be dispatched to maximize capacity, as well as the number of carts that would be needed.

  • Staff efficiency: the total number of trips made in a day and the staff resource which would be required.

Geisinger Health System internal logistics simulation model

Geisinger simulation



Usage profile for the 12-tray cart

Geisinger cart dispatch results

Experimenting with dispatch intervals (8, 10, 12 minutes) and cart capacity (12, 14 and 18-tray cart options), it was quickly uncovered that capacity was not a constraint. SIMUL8's simulation results showed that the highest possible utilization rate of 49% using a 12 minute dispatch time and a 12 tray cart.

From this analysis, it was revealed that as the dispatch time increased, resource utilization also improved – however, patient satisfaction levels would be compromised as a result of longer delivery times.

Using this valuable information, Seth and his team were able to make initial recommendations to senior stakeholders around the optimum balance between service level and utilization of hospital staff and resources.

Adding realistic constraints to the simulation



Building on the findings from the initial simulation, Seth and his team sought to introduce additional, realistic constraints in to the simulation; operational staff scheduling, food preparation time and cart return and clean up time.

With a 45 minute delivery turnaround time target set by management, the feasibility of this goal was dependant on identifying an optimal staffing schedule and the most efficient delivery and pickup methods.

Testing delivery and pick up scenarios

Three scenarios for delivery and pickup routes were tested; a standard original operation (3 zones, fixed route), a modified pick up schedule (rotational route) and an experimental six-zone facility layout route. It had initially been predicted that the rotational route would provide the most efficient means of delivery and pickup, however, simulation results uncovered that the six-zone layout provided the best results.

Verifying staff scheduling and utilization

Importing staff schedules into the simulation, it was quickly shown that the existing rota would be inadequate in order to achieve the objectives of the new proposed food system. As a result, a new hourly staffing schedule was developed, taking into consideration the additional tasks of food preparation and cart cleaning.


Six-Zone Operation Utilization-Service Trade-Off

Six-Zone Operation Utilization-Service Trade-Off

Using simulation results to implement the new system


Using the innovative six-zone layout identified in the simulation, 98% of meals were able to be delivered within the agreed service level of 45 minutes.

A new staff work schedule was also identified which provided a balanced, effective employee utilization of 88.4%.

Using SIMUL8’s healthcare simulation software, Geisinger were able to incorporate real-world data and devise a thoroughly tested implementation strategy for the on-demand food delivery service, allowing for the best balance between resource utilization and patient satisfaction levels.

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