| 1 Stop MD Office | | Assisting physicians with office location, staffing, credentialling and medical billing. |
| 51 Oakwood, Inc | | Electronic, HIPAA compliant, medical billing service for radiation therapy. |
| A and E Billing Solutions | | Medical billing and consulting services specializing in orthopedics, spine, and workmans compensation. |
| A-One Biz Solutions Pvt Ltd | | Offers practice management solutions to its healthcare clients of coding, data management, credentialing and enrollment, account receivables and payables. |
| ABC Billing Solutions | | Provide out-patient medical billing services, including claims processing and collection services in the Triangle and Piedmont areas of North Carolina. |
| Acc-Q-Data Inc | | Provides electronic medical billing claims processing for orthotics and prosthetics. |
| Accu-Bil | | Provides billing, collection and reporting services for health care providers. |
| Accu-Doc | | Provides medical transcription services. |
| Accu-Right | | Offers complete billing services for California chiropractors. |
| Accubill, Inc | | An electronic medical claims billing specializing in both private insurance claims and Medicare claims. |
| AccuClaims | | Electronic claims processing and billing for all medical specialties and transcription services available. |
| Accudata Service | | Medical billing service and software for insurance billing, electronic claim submission, accounts receivable tracking and practice management. | |
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