Quality Systems Inc.: The Tustin-based company reported...

Quality Systems Inc.: The Tustin-based company reported a loss of $289,100 for the fiscal 1990 third quarter ended Dec. 31. The company posted net earnings of $20,500 for the period in fiscal 1989. Revenue for the quarter rose 3% to $2.32 million, from $2.25 million. The company lost $225,900 for the nine-month period, contrasted with a net income of $80,100 for the period the previous year. Revenue rose 5% to $7.1 million, from $6.8 million. The company said it has incurred higher expenses because it has expanded its sales force and enhanced its products. Quality Systems sells computerized information processing systems to medical and dental group practices.