Patient Portal Cont. pg 2 If you have reasons to believe that breach of HIPAA exists with the patient portal and Margolin, Keinarth & Alberda, M.D. has not satisfactorily remedied the situation, you may file a complaint to the Texas Medical Board at: Texas Medical Board ATTN: Investigations 333 Guadalupe, Tower 3, Suite 610 P.O. BOX 2018, MC-263.