ProAssurance Corporation is a holding company for property and casualty insurance companies. For the year ended December 31, 2018, our net premiums written totaled $835 million, and at December 31, 2018 we had total assets of $4.6 billion and $1.5 billion of shareholders' equity.
We will be the best in the world at understanding and providing solutions for the risks our customers encounter as healers, innovators, employers and professionals. Through an integrated family of specialty companies, products and services, we will be a trusted partner enabling those we serve to focus on their vital work. As the employer of choice, we embrace every day as a singular opportunity to reach for extraordinary outcomes, build and deepen superior relationships, and accomplish our mission with infectious enthusiasm and unbending integrity.
Our wholly owned insurance subsidiaries provide professional liability insurance for healthcare professionals and facilities, professional liability insurance for attorneys, liability insurance for medical technology and life sciences risks and workers' compensation insurance. We are also the majority capital provider for Syndicate 1729 which writes a range of property and casualty insurance and reinsurance lines. In addition, we are the sole (100%) capital provider of a SPA, Syndicate 6131, which began writing business effective January 1, 2018 and focuses on contingency and specialty property business.