Dr. Lenehan graduated from University of Vermont College of Medicine in 1969 and has been in practice for 49 years. He completed a residency at Passavant Pavillion. Dr. Lenehan also specializes in Surgery. He currently practices at South Shore Hospital and is affiliated with South Shore Hospital. Dr. Lenehan accepts multiple insurance plans including Harvard Pilgrim, Tufts Health Plan and Medicare. In addition to English, Dr. Lenehan's practice supports these languages: French and Spanish.