Original ArticlePublic Health Surveillance Approaches in Oregon's Medicaid PopulationMarshall, Lynn M. ScD; Howard, Richard N. BS; Sullivan, Amy PhD; Ngo, Duyen L. PhD; Woodward, Jennifer A. PhD; Kohn, Melvin A. MDAuthor Information Epidemiologist with the Oregon Health Division, Portland, Oregon. (Marshall) Senior Database Analyst, Office of Information Programs, Salem, Oregon. (Howard) Epidemiologist with the Oregon Health Division, Portland, Oregon. (Sullivan) Epidemiologist with the Oregon Health Division, Portland, Oregon. (Ngo) State Registrar with the Oregon Health Division, Portland, Oregon. (Woodward) State Epidemiologist, Oregon Health Division, Portland, Oregon. (Kohn) This manuscript was supported by Cooperative Agreement Number U82/CCU015024 from the Centers for Disease Control and Prevention. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the CDC. We thank Berhanu Anteneh and Thomas Brundage for their work on the design of the Medicaid survey, and Karen Southwick for her numerous contributions to the Public Health Medicaid Assessment Initiative. Journal of Public Health Management and Practice: July 2002 - Volume 8 - Issue 4 - p 63-69 Buy SDC Abstract The development of methods for public health surveillance in Medicaid populations is an important goal for public health practice. In Oregon, we developed approaches to case finding using claims and self-reported data obtained from the Medicaid beneficiary population. Disease rosters, derived from claims data, form the basis for analyses pertaining to particular health conditions. Self-reported information obtained through a telephone survey forms the basis for analyses pertaining to behavioral risk factors, disease history, and other information not available in claims data. We also describe some projects in which we plan to use combined claims and survey data. We describe our experiences with using these techniques and provide examples from projects in progress or planned. Our initial experiences suggest that these approaches enhance our ability to conduct public health surveillance in Oregon's Medicaid population. © Aspen Publishers, Inc.