Supervisor respiratory therapy Methodist Hospitals Dallas, 1974-1976. Instructor respiratory technical program Tarrant County Junior College, 1976-1977. Technical director pulmonary rehabilitation, respiratory therapy services, biofeedback therapist.
Methodist Hospitals Dallas, 1977-1980. Instructor Texas Institute Respiratory Therapy, 1978-1980. Chief technician, physician's assistant Respiratory Care Center, Dallas, 1980-1981.
Researcher pulmonary research division Methodist Hospitals Dallas, 1981-1986. Instructor respiratory therapy Dallas County Community College, 1981-1983. Director education and rehabilitation pulmonary services Medical City Dallas Hospital, 1983-1986.
Consultant biofeedback program Dallas Rehabilitation Institute, 1985-1986. Research assistant to private practice physician Dallas, since 1986.
Board advisory El Centro College, Respiratory Therapy Program, 1983-1986. Member Applied Association Advancement Behavioral Therapy, Biofeedback Society Texas, Association Applied Psychophysiology, American Association Respiratory Care, Texas Society Respiratory Care, North Texas Region Respiratory Care, American Lung Association (Dallas area).