All Services Administrative & Secretarial BPO Medical Billing, Administration $10/hr · Starting at $30 CMS regulations, Payment process, Denial process, Correspondence. PIA(Patient Inquiry Application, Mediare and Medicaid Billing process Administration work About $10/hr · Ongoing Download Resume CMS regulations, Payment process, Denial process, Correspondence. PIA(Patient Inquiry Application, Mediare and Medicaid Billing process Administration work Skills & Expertise Administrative AssistantBillingBPOCMSMedicalPatient EducationPayment Gateway IntegrationProcess Design 0 Reviews This Freelancer has not received any feedback. Browse Similar Freelance Experts Payment Gateway Integration ServicesPatient EducatorsBilling SpecialistsProcess Designers