Mandelbaum Barrett PC | 4,335 followers on LinkedIn. Full-Service Law Firm Delivering Client-First Solutions Across 30+ Practice Areas Since 1930. | Since 1930, Mandelbaum Barrett PC has proudly delivered sophisticated, relationship-driven legal services across 30 legal practice areas spanning countless industries for clients throughout the country. With a client-focused approach, we partner closely with businesses and individuals to proactively anticipate their legal needs and address complex legal challenges. Our attorneys are zealous advocates, treating each client’s concerns as if they were our own.