Investment in a chain of private medical practices as a silent partner

A young medical limited liability company (GmbH) with three practice locations specializing in aesthetics, wellbeing, and longevity is seeking a silent partner to support the expansion of two new locations. The business provides 100% self-pay services and has seen its annual revenue double on average over the past three years.
The company is reporting a profit. Because it is a “young” company, traditional banks are reluctant to provide financing, which is why an investor is now being sought.