Sage and Associates:  Mary Jean Sage.  Healthcare business consulting, billing and coding, compliance issues.  HMO/PPO and Medicare opt-out analysis and strategies.   122 LePoint Street, Suite 201, Arroyo Grande, CA   93420;  phone 805-474-4064. Sinaiko Healthcare Consulting:  Richard Sinaiko.  Healthcare business consulting, coding, compliance, transactions, practice evaluation, litigation support.   1100 Glendon Ave., Suite 1800, Los Angeles, CA   90024; phone 310-826-4935. Practice Builders:  Steve Smith.  Medical marketing consultants to solo and group practices.  Onsite and workshop marketing services to increase patient volume.  1 Mac Arthur Place, Suite 200, South Coast Metro, CA 92707; phone 800-679-1200.