About Us The San Marcos family law attorneys of Fischer & Van Thiel, LLP, are committed to providing high-quality, aggressive, and effective representation for our clients. Our law office is founded on the principle that every client receives the individual attention and experienced legal representation that he or she deserves. Your legal needs are as important to us as they are to you. We are proud of the reputation we have achieved in the San Diego County area for handling our clients’ cases with compassion, tenacity, and in a cost-efficient manner.