Sunstone Partners has announced it has invested in RSource Healthcare.

RSource, based in Boca Raton, Fla., is a provider of revenue cycle management services to hospitals and health systems.

Sunstone Partners, based in San Mateo, Calif., pursues majority and minority investments in technology-enabled services and software businesses in healthcare and other sectors. Founded in 2015, the firm has wide flexibility on investment size, seeking companies generating between $10 million and $50 million in revenue.

Terms of the investment were not disclosed.