Dr. Peyer graduated from Northwestern University Feinberg School of Medicine in 1976 and has been in practice for 42 years. He completed a residency at Northwestern Memorial Hospital. He currently practices at Community Memorial Hospital and is affiliated with HSHS St Clare Memorial Hospital. Dr. Peyer accepts multiple insurance plans including Aetna, Network Health Plan and Common Ground. Dr. Peyer also practices at Alfonso Li Tiu MD in Marinette, WI.