Lingyi Zhang has taken legal action against a dental practice, alleging deceptive marketing and professional negligence. On January 6, 2026, Lingyi Zhang filed a complaint in the Superior Court of California for the County of Santa Clara against Yujia Yao DDS Stevens Creek, Inc., and Yujia Yao DDS Woodside, Inc., both operating under the name Captain Dental.
The case revolves around allegations that the defendants engaged in misleading marketing practices by offering dental service credits in exchange for positive online reviews. This scheme allegedly led to Zhang undergoing an unnecessary extraction of an asymptomatic wisdom tooth at their Redwood City location on December 14, 2024. The procedure was described as unusually prolonged and difficult, resulting in complications that eventually required further surgery by an outside oral surgeon on December 10, 2025. Zhang claims that the defendants failed to provide complete and accurate dental records and produced late-created entries inconsistent with her actual treatment history.
Zhang’s complaint includes multiple causes of action: unfair competition, false advertising, fraud/intentional misrepresentation and concealment, professional negligence (dental), and lack of informed consent/negligence or medical battery. She seeks restitution, compensatory damages, punitive damages for fraud-related claims, and other relief deemed appropriate by the court. The plaintiff argues that the defendants’ actions have caused her financial loss due to additional medical expenses incurred to address the harm done.
Zhang is representing herself in this case as indicated by her filing “in pro per.” The lawsuit highlights significant issues regarding consumer protection within healthcare services. The plaintiff accuses Captain Dental of failing to uphold professional standards by not obtaining informed consent before performing procedures and engaging in unethical marketing practices that misled patients about necessary treatments.
In conclusion, Lingyi Zhang is pursuing legal recourse to hold Captain Dental accountable for alleged misconduct that resulted in physical harm and financial burden. She demands a jury trial to seek justice for what she perceives as violations of trust between patient and provider.
The attorneys involved are not specified beyond Lingyi Zhang representing herself “in pro per.” No specific judge is mentioned in the document provided. The case ID is noted as Case No.: 8 Z 3.
Source: 26CV483823_Lingyi_Zhang_v_Yujia_Yoa_Complaint_County_of_Santa_Clara_California.pdf
