SIMPSON THACHER & BARTLETT LLP is a Foreign Limited Liability Partnership registered in the state of DC. The business was filed on 03/11/2005 and is currently listed as Active - In Good Standing. The official file number for this entity is 220422. The registered agent on file is Rajib Chanda, located at 900 G Street, NW, Washington, DC, 20001. The principal office address is located at 425 Lexington Ave., New York, NY, 10017.