ISI Executive Management Team

Lawrence K. Doll
Chairman of the Board & Principal

Lawrence K. Doll is the sole proprietor of The Lawrence Doll Company, a real estate development firm located in Fairfax, Virginia. In February of 1995, he formed Lawrence Doll Homes, L.L.C., a home-building company; Mr. Doll is a former Marine who served in Vietnam where he received a Purple Heart and the Vietnamese Cross of Gallantry. After recuperating from combat wounds in Guam, he returned to the United States where he served in the prestigious United States Marine Corps Honor Guard in Washington, D.C. Upon being honorably discharged, he completed two years at Piedmont Community College in Charlottesville, Virginia, and majored in Business Administration. Mr. Doll entered the real estate industry, and in 1980, he started The Lawrence Doll Company, a real estate firm specializing in land development.  He also serves as Chairman of the Board of the United Bank and the George Mason University Foundation.

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Dan Marshall
Executive Director & Principal

Dan Marshall, President of the Real Estate Transaction Group, oversees the administrative side of the company and shares in the business development responsibilities by identifying and pursuing new business opportunities. Mr. Marshall has managed ISI’s Real Estate Transaction Group for the last twelve years, which requires him to supervise over 100 professionals supporting federal agencies with strategic planning, transaction services, construction management, IT, and relocation management.  For the past three years, he has interpreted and analyzed complicated federal requirements as the Government struggles to modernize its facilities while meeting new security requirements.  Mr. Marshall attended Randolph Macon College.

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John Friel
Senior Vice President

John Friel, Senior Vice President of the Real Estate Transaction Group, brings twenty-six years of transaction experience to the real estate team.  He was a contracting officer and project manager for the General Services Administration on many large leasing and renovation projects in the Boston area.  At the National Institutes of Health as head of the real estate office, he managed the largest expansion in the NIH history, acquiring over 3 million square feet of expansion space in five years including 700,000+ sf of the most specialized lab space ever built.  With ISI, he has guided numerous large-scale projects, such as the multiple laboratories at Twinbrook in Rockville MD, the lab at the Bayview campus of Johns Hopkins University and the recent ground lease at Picatinny Army Arsenal.  Mr. Friel attended Holy Cross College.
                                                                                    
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Morton Taubman
Corporate Counsel

Mort Taubman is ISI’s General Counsel and is in charge of all legal matters for the company.  He has authored numerous papers and articles concerning corporate accounting and has been an Adjunct Professor at Georgetown University, George Washington University, and American University, as well as a lecturer at New York University.  Mr. Taubman is a member of the Maryland Bar Association, District of Columbia Bar Association, and American Institute of Certified Public Accountants.

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