He studied at the Tulane University, where he received his Doctor of Medicine degree. After he graduated from the school, he started to take up another course of study and graduated with an MBA. He has been practicing medicine with his father, and when he had free time, he is thinking about establishing his own business. The business was realized years later, and it was a real estate firm. The company, called the McKenna Venture Investments, has been experiencing steady growth since it was established. The company has been actively acquiring other smaller firms, including the Uptown Title Inc. and Universal Mortgage Lending. Dr. Mark McKenna would soon witness how his business would grow to accommodate around 50 employees, and he will be recognized as the owner of one of the fastest growing real estate businesses in the country.