Should fee-for-service group practices develop a prepaid component?

Many fee-for-service group practices are considering the advantages of developing activities using health maintenance organization concepts. In some cases, the decision to become involved with an HMO as an addition to current fee-for-service activities may become essential because of competition with other medical groups who are also considering an HMO alternative. There are a number of different ways or models for fee-for-service groups to become involved with an HMO.