OUM is one of the leading professional services firms in California, with offices in San Francisco and San Diego (Carlsbad). Our specialty is providing audit, assurance, tax, and advisory services to public and private companies in the life sciences, technology, real estate, and private equity and investment fund industries. We also specialize in tax planning for high net worth individuals and family-owned businesses.

Our firm has over seventy professionals, many of whom are experienced managers and staff formerly with Big 4 firms. We stress active and ongoing partner involvement, candid and timely communication, and continuity of experienced professional staff.

We are an independent member of the BDO Seidman Alliance. BDO Seidman is a member firm of BDO International, the fifth largest accounting and consulting network in the world, with offices in 110 countries. Our affiliation with BDO Seidman affords us access to national and international offices; technical expertise; specialized resources; quality assurance; high-caliber training; and the latest technical and reporting developments.