This might shed a little insight...from a GD 2001 article:
He oversees a 32-person staff spread among this main office in Hendersonville and outlying offices in Palm Beach and Scottsdale, but he is not your typical chief executive. He doesn't do voice mail or e-mail, places his own phone calls, carries no business cards and has no promotional materials, offering in the way of PR only a list of courses he's done (numbering more than 125 after 36 years of designing). The office phone is unlisted, as is the company name in the building directory, to discourage walk-ins by golf nuts. "We're kind of undercover," says a staff member.