Esther Chang Weese focuses her practice on health care transactions and regulatory matters. Esther represents large health systems, hospitals, ambulatory surgery centers, cancer treatment facilities and other health care providers on mergers and acquisitions and joint ventures. In addition to her transactional experience, Esther advises clients on health care regulatory issues, including fraud and abuse, self-referral, corporate practice of medicine, the Health Insurance Portability and Accountability Act (HIPAA) and California medical information privacy laws. She has extensive experience drafting contracts, including professional services agreements, medical director agreements, management agreements and affiliation agreements. Esther has also counseled hospital clients on general counsel-type matters, including informed consent, California-mandated reporting laws and California health facility licensing requirements.