Wallin Harrison represents medical, dental, and other healthcare providers and organizations in a variety of matters including litigation, contracts, medical-malpractice defense, licensing, and credentialing. Wallin Harrison's practice includes the formation of, and counseling to, professional entities such as professional limited liability companies, corporations and partnerships. With confident counsel by Wallin Harrison, healthcare professionals are represented before the Board of Medicine and Board of Medical Examiners, Boards of Dental Examiners, and Offices of Attorney General.

Additionally, Wallin Harrison is active in mergers of medical practices, managed-care contracting, buy-sell agreements among practice members, employment contacting, including covenants not to compete, hospital contracts, and the purchase and sale of professional practices.