Ryvin Wallace Group 775 E Blithedale Ave, Mill Valley, CA94941 Ryvin Wallace Group is a consulting and law firm with offices in Mill Valley and Washington, D.C. The firm is headed by…More Michael Ryvin and Christy Wallace. Ryvin Wallace Group focuses exclusively on U.S. immigration law, providing clients with business immigration strategies, consulting and policy services. The firm's clients are located all over the United States as well as internationally. The firm focuses on a variety of areas of immigration law, specializing in temporary visas, family-based options and green cards, investor visas, employment-based green cards and immigration program management. For further inquiries or to schedule a consultation, phone Ryvin Wallace Group's California office.