ARDMS Directory of Registrants

The result of a search of the ARDMS Directory of Registrants serves as a primary source verification of credentials by the ARDMS. It is the responsibility of an employer to confirm with sufficient identifiers that an individual, whose credentials are being reviewed, is the same person reported in the Directory.

The ARDMS Directory of Registrants provides information regarding status in the following categories:

Active Registrant: An individual who: (1) has successfully passed a physical principles and instrumentation examination and corresponding specialty examination, thereby earning a credential with official notification by ARDMS; and (2) is in compliance with continuing competency and/or annual renewal fee requirements.


  • RDMS – Registered Diagnostic Medical Sonographer
  • RDCS – Registered Diagnostic Cardiac Sonographer
  • RVT – Registered Vascular Technologist
  • RPVI – Registered Physician in Vascular Interpretation
  • RMSK - Registered in Musculoskeletal sonography


  • AB – Abdomen
  • AE – Adult Echocardiography
  • BR – Breast Specialty
  • FE – Fetal Echocardiography
  • NE – Neurosonology
  • OB – Obstetrics & Gynecology
  • PE – Pediatric Echocardiography
  • VT – Vascular Technology

Specialties No Longer Offered

  • BP – Ophthalmic Biometry
  • OD – Obstetrical Doppler
  • OP – Ophthalmology
  • PD – Prostate Doppler
  • PV – Peripheral Vascular