Device-to-Device (D2D) multicast communication is emerging as a practical solution to alleviate severe capacity crunch in data-centric wireless networks and to encourage backhaul-free communication directly among devices with similar content requirement. Resource allocation in multicast networks is a critical issue that impacts both, the network throughput and spectrum efficiency. We devise an uplink resource reuse strategy for multiple multicast D2D groups and multiple cellular users (CUs), with the objective of maximizing the sum throughput, while guaranteeing a certain level of quality of service (QoS) to CUs and D2D users. We establish the efficacy of the proposed scheme for variable group sizes and geographical spread.