Founded in 1975, American Physicians Service Group, Inc. (APS) is the holding company for a key operating subsidiary, APS Ins ... urance Services, Inc. which provides medical professional liability insurance and related services for physicians and other healthcare providers. APS the second largest provider of medical professional liability insurance in Texas, where American Physicians Insurance Company (API), a subsidiary of APS Insurance Services, has been writing insurance for over 30 years. The Company insures over 6,500 medical professionals in Texas, Arkansas, Colorado and Oklahoma. Our long-term presence in the Texas medical professional liability insurance market provides us with name recognition and strong relationships with the physicians practicing in Texas, and the experience to grow into other states, such as Arkansas and Oklahoma, where we continue to gain policyholders. API is rated A- (Excellent) by A.M. Best Company. read more