Greg graduated from the University of California, Santa Cruz, in 1979 with a Bachelor’s degree in Modern Society and Social Thought. After graduating, Greg worked for Richardson, Haynie & Co, Certified Public Accountants, in Walnut Creek and Oakland, California. He joined the firm in 1983, working in the Napa and St. Helena offices. Greg became partner in 1987. Greg and his wife, Susan live in Napa and have four children, including twins.

Professional memberships include the American Institute of Certified Public Accountants and the California Society of Certified Public Accountants. Greg is a director of the Bank of Napa, a member and past president of the Napa Sunrise Rotary Club, executive board member and treasurer of If Given A Chance Foundation and trustee for the Queen of the Valley Hospital Foundation. Greg is a past Board member and treasurer of the Napa Valley Unified Education Foundation, the Napa Valley Symphony Association, the Napa Youth Soccer League, the Napa Active 20-30 Club and Leadership Napa Valley.

Greg's professional emphasis is in estate, gift and trust taxation and planning, as well as accounting and taxation for the construction and real estate industries, legal and professional service firms, and other small businesses indigenous to the Napa Valley. Greg manages the Napa office.