Map for J. Smith Lanier & Co., a Marsh & McLennan Agency, LLC. Map for J. Smith Lanier & Co., a Marsh & McLennan Agency, LLC. Search | Advanced Search | New Members | Coupons and Discounts | All Categories Finance & Insurance >> Insurance >> Insurance J. Smith Lanier & Co., a Marsh & McLennan Agency, LLC. 1500 Mahan Dr., Ste. 111Tallahassee, FL 32308 | directions Mr. Greg DeLoach (850) 877-8181 | fax: (850) 942-4928 Visit Site If your business isn't here, contact us today to get listed!