Case Study

12-Month Impact of a HHB Microclinic™ at a Self-Insured Employer

Find out how a Hamilton Health Box microclinic helped a self-insured employer reduce healthcare spend, create a culture of care in the workspace, and make primary care accessible and convenient.


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12-Month Impact of a HHB Microclinic at a Self-insured Employer


This Hamilton Health Box (HHB) microclinic was set up at an employer’s worksite in early 2019. The employer is self-insured and was facing highly variable healthcare spending every year.

The employer had little insight or control into where the money was going, and an ever-increasing bill to pay for insurance premiums. Additionally, the employer faced other challenges including high turnover, and required on-site drug testing facilities to be set up for both preemployment, random, and Department of Transport drug testing.

The CEO and CFO had been looking for ways to get healthcare-related spending under control, and had found worksite clinics to be an ideal solution for them. With only approximately 320 employees on-site, however, they realized that the company was too small for the standard worksite clinic solutions that they could find, and reached out to HHB to set up a microclinic.

To measure the impact of the clinic, historical claims data was pulled for the same period in 2018 and 2019. Between 2018 and 2020, the plan had approximately 330 members, of which around 235 employees, with average age of 38-39 and around 40% female members.

Microclinic Setup and Services

The microclinic was set up at the employer worksite in one of the corporate offices, with easily accessible restrooms and separate access.

The following services were offered during the 4 month pilot at this site:

  • Primary care
  • Urgent & emergent care
  • 24/7 access
  • Telemedicine technology
  • Claims management
  • Referral management
  • Chronic care management
  • Pharmacy oversight
  • On-site drug screening
  • Labs
  • Vaccines
  • Preventative physicals
  • Occupational medicine

Summary of Results


PMPM savings
compared to prior
2 year average


Drop in ER
and Urgent Care


Increase in primary care
visits compared to prior
2 year average

Total Medical Expenses

Total medical expenses decreased by over $492,388 from the trailing 2 year average.

Total Medical Expenses


Total Short Term Savings

Over $141,000 was saved, resulting in a 1.8x ROI.

Total Short Term Savings 1.8x ROI
  • 48% Avoided Emergency Room
  • 17% Visits
  • 17% Reduction in stop loss premium
  • 9% Stopped insurance programs
  • 3% Avoided Urgent Care
  • 3% Drug tests
  • 2% Labs
  • 1% Procedures and imaging

Long Term Savings

30+ undiagnosed chronic conditions were identified:


14 undiagnosed diabetics
$4,250 avg. cost per year


18 undiagnosed hypertensives
$31,218 avg. cost per year


5 coronary artery disease
$53,384 avg. cost per event

All of these conditions are now managed through treatment, lifestyle coaching, and medication included in HHB’s chronic care management programs.

Total Visits

The number of primary care visits increased, while the number of high-cost ER and Urgent Care visits decreased.

Total Visits


Employee Savings on Copay

To drive engagement, Hamilton Health Box set copays to $0, saving employees $61,229 over the course of the year, averaging $260 per employee per year.


Office visits




Urgent Care visits


ER visits


Total employee savings

Key Takeaways

The results of the Hamilton Health Box microclinic above show the short and long-term potential in driving significant savings for the self-insured employer market.

The onsite microclinic generates value by increasing primary care utilization, impacting the double bottom line of finance and culture. Access and convenience are key factors in driving this impact. The employer benefits from creating a culture of care, demonstrating concern for employees’ health and well-being.

In this case, Hamilton Health Box made an impact by:

Employer reduced healthcare spend

Employer reduced
healthcare spend

Employee benefited from copay savings

Employee benefited from
copay savings

Creation of a culture of care in the workplace

Creation of a culture of care
in the workplace

Accessible and convenient primary care

Accessible and convenient
primary care