Ginsberg Joe Ginsberg, senior advisor for the commercial real estate brokerage firm SperryVan Ness / Rambo &Ginsberg in Fort Myers was recently awarded the Certified Commercial Investment Member designation by the CCIM Institute, a leading professional commercial real estate association. A CCIM represents today's most knowledgeable, experienced, and successful commercial real estate brokerage specialists. Ginsberg specializes in the sale of income producing properties including shopping centers, office buildings and hotels in Southwest Florida. Only 6 percent of the estimated 125,000 commercial real estate practitioners nationwide hold the CCIM designation.