Mark D. Niehaus, M.D.

Note: Providers found in the Sentara Find a Provider search are active medical staff at Sentara hospitals or medical group practices. For all providers listed, Sentara Healthcare credentialing and medical staff offices verify specialty, education and board certification. Other information, such as contact information and address, is not regularly maintained by Sentara and is the responsibility of the provider to update. To verify that your health insurance is accepted by this provider, please contact the provider’s office directly to confirm.