Contact Us

By Patient Portal

For HIPAA security, if you are an existing patient, please log in to our Patient Portal and select the Contact Us link from the Messages section. Send your message to your provider and we will review the message and distribute it to the appropriate department so it can be responded to.



Dallas Office: (214) 827-3610
Option 1: Doctor’s office or a hospital and it is an urgent matter
Option 2: Scheduling
Option 3: To leave a message for your providers clinical staff
      Option 1: For Dr. Herzog, Barrett Horton, Ashley Olsin, Paige Schafer, or Joy Osemiha
      Option 2: For Dr. Khoury
      Option 3: For Dr. Samuel
      Option 4: For Dr. El-Feky
      Option 5: For Dr. Jenevein
      Option 6: For Dr. Heitzman, Dr. Philip, or Dr. Martin
      Option 7: For Dr. Greenfield, or Dr. Tunell
      Option 8: For Dr. Nguyen
      Option 9: For Dr. Nagaraj
Option 4: MRI Center
Option 5: Infusion Clinic
Option 6: Medical Records
Option 7: Billing or Insurance
      Option 1: Questions regarding a bill you have received, or would like to make a payment on your account
      Option 2: To verify your insurance is covered or in network
Option 8: Botox authorization or insurance coverage

Neurotoxins: (214) 279-0311

Richardson Office: (214) 540-1400

Diagnostic Imaging Center: (214) 826-6700

Sleep Disorders Center:
(214) 443-5154

By Fax

  • Main HIPAA Fax: (214) 821-4017
    Note: We are currently experiencing issues with our Main HIPAA Fax line above, until this issue is resolved, please send faxes to our direct Medical Records fax number of (214) 827-1054.
  • Non-HIPAA Fax: (214) 827-1054

By Email

Listed below are key departments and email contacts in each area. Please provide us with your full name, telephone number, email and best time to reach you so we can respond to you as quickly as possible. If you are unsure what department or person to contact with your questions, please send them to our General Inquiries. We will do our best to respond to you the same day or within 24 hours.