Wendy Margolin discusses the importance of social media marketing for private practices, emphasizing the need for a strategic approach to enhance visibility and community engagement. She highlights the significance of choosing the right platforms based on the target audience, with Instagram and Facebook being key for patient outreach. Margolin advises consistent content creation that reflects the physician's personality, along with the use of paid ads to boost visibility. Additionally, she stresses the importance of building an email list for direct communication and tracking engagement metrics to measure marketing success.