As you may be aware, there is increased recognition within the Pediatric community that early diagnosis and treatment of health, developmental and behavioral issues in children and adolescents is extremely beneficial in successfully dealing with them. Many organizations, including the American Academy of Pediatrics, now recommend using pre-visit screening tools to assist with early identification. Starting immediately, we will be using CHADIS, an Internet-based system through which you complete questionnaires prior to each visit, in order to track your child’s development as well as inform us of the topics you want to discuss.

Instructions to use CHADIS

To use CHADIS, please register online now at


Under the “For Families and Teens” tab, click on REGISTER in the CHADIS Login box.


Please enter the “Invitation Code” below, which is our office telephone number.


Invitation Code: 9564670733


Once you enter CHADIS, you will be asked to create a username and password. Your email address is the best username. Write your new username and password in a safe place. 


If you have an appointment within the next two weeks, please log back into CHADIS using the user name and password you just created. Doctor Argenal has assigned questionnaires for that visit based on the reason for the visit and age of your child. Otherwise, before each visit, please log onto CHADIS and complete the prescribed questionnaires. You will receive reminders from CHADIS to fill them out.


These questionnaires are recommended by the American Academy of Pediatrics and we are glad to be a leader in providing them to you. Please note that CHADIS is a secure website and that your information will never be made available to outside organizations.


As a partner in your child’s healthcare, your input is essential in helping us provide the best care possible. We are dedicated to this goal and we believe CHADIS is a great new tool for achieving this objective.



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4102 Crosspoint Blvd, Edinburg, TX 78539​

Tel: 956-467-0733    
Fax: 888-331-0537

516 N. Shary Rd., Ste G, Mission, TX 78572


Tel: 956-720-0705    Fax: 855-545-2312

© 2019 by Rodrigo Argenal MD. PA.   Last updated 08/2019