Nationwide Health Tracking Act of 2002

Direct the Secretary and the Administrator of the Environmental Protection Agency to jointly establish the Commission on Nationwide Health Tracking.

Directs the Secretary, acting through the Director, to support State Health Tracking Networks through: (1) pilot programs; (2) awarding grants; and (3) providing technical assistance. Makes States, political subdivisions of States, territories, and Indian tribes eligible for participation, subject to an approved application.

Requires such Networks to: (1) conduct surveillance activities; (2) collect and analyze data; (3) establish an early warning system and response capacity; (4) recruit and train public health employees; and (5) expand and integrate existing systems and activities to the extent practicable.

Requires the Nationwide Health Tracking Network to coordinate State Networks and existing Federal public health and environmental surveillance systems and activities.

Authorizes the Secretary to provide for research and demonstration centers concerning chronic conditions and relevant environmental factors.

Directs the Secretary to: (1) expand the scope of biomonitoring data collection; (2) publish a Nationwide Network report; and (3) award John H. Chafee Public Health Scholarships for advanced training in chronic conditions and environmental epidemiology and health sciences.