Areas of expertise for Dr. Houlihan include bioidentical hormone replacement therapy (BHRT), colposcopy, and menopause. Dr. Houlihan is affiliated with ThedaCare. Before performing his residency at Fox Valley Family Medicine Residency Program, Dr. Houlihan attended Medical College of Wisconsin for medical school. He is an in-network provider for Humana HMO, Humana Bronze, and Humana Catastrophic, in addition to other insurance carriers.