Providing referrals and on-line referrals, namely, appointment scheduling services for medical services including physical, occupational, speech, aquatic and pre-surgery therapy, functional capacity evaluations, work hardening and conditioning, and chiropractic care all provided in connection with patient relationship management services; and business services provided to a network of healthcare providers, namely, the negotiation and execution of contracts with healthcare payers; all of the forgoing involving workers' compensation claims; all of the above, excluding services in the field of dentistry and orthodontics