At Women's Health Institute, Dr. Larry Overcash and Erin Overcash WHNP help women in and around Peoria, Illinois and the surrounding areas maintain their overall health and wellness. Dr. Overcash and Erin Overcash are dedicated to providing highly professional and compassionate healthcare to women of all ages including important OB/GYN services such as well-woman exams, care for uterine and ...About Practice‧Testimonials‧Erin J. Overcash, W.H.N.P‧Contact Us.