Cliff is the Founder of Professional Insurers Agency, LLC. He holds the designation of CPIA (Certified Professional Insurance Agents). Cliff's experience in the industry includes Certified Insurance Counselors Seminars (Property, Casualty, and Agency Management), Continental Insurance Company Agency School. In a career in the insurance industry, spanning over 40 years, he has served as a direct writer and national marketing director for a large broker and branch manager of an independent agency.

Cliff sold professional Insurers to his son Kelly Miller In 2018 and got his real estate license to start a new career in real estate with 40 years of experience in the insurance field and the past 20 as in investor and owner of commercial properties. His goal is to continue developing and investing in commercial real estate using his background in insurance to aid in his success.

Cliff attended Oklahoma State University and obtained a B.S. Degree with a major in Business Administration from Emporia State University (Emporia, Kansas) in 1966.