Quality Systems can't help doctors' with the legibility of their signatures, but it knows how to insure the integrity of their digital records. The company develops data management software for medical and dental practices, and a variety of other health care businesses. Its NextGen subsidiary (75% of sales) makes electronic records and practice management software tailored for patient data, scheduling, billing, and claims handling. Its practice management unit focuses on electronic claims submission, remittance, and payments services. The company's QSI Dental division makes practice management software for dentists. Its inpatient unit focuses on clinical and financial software for rural hospitals.