Lohja Hospital has Lohja Tynninharju located HUS Underground Hospital, whose area includes the Karkkila , Lohja , Siuntio and Vihti . The hospital has a 24-hour emergency service.

Polyclinics 

Lohja Hospital has the following outpatient clinics:

• Diabetes outpatient clinic
• Endocrinology Outpatient Clinic and Obesity Outpatient Clinic
• Gastroenterology Outpatient Clinic
• Outpatient Clinic of Dermatology and Allergology
• Cardiology Outpatient Clinic
• Outpatient Clinic of Lung Diseases
• Surgery outpatient clinic
• Ear, Nose and Throat Outpatient Clinic
• Child Psychiatry Outpatient Clinic
• Pediatric Outpatient Clinic
• Outpatient Clinic for Kidney Diseases
• Gynecology Outpatient Clinic
• Outpatient Clinic of Neurology
• Orthopedic Outpatient Clinic
• Outpatient Clinic of Plastic Surgery
• Rheumatic Outpatient Clinic
• Ophthalmology outpatient clinic
• Internal Medicine Outpatient Clinic
• Urology Outpatient Clinic
• Vascular Surgery Outpatient Clinic
• Outpatient Clinic of General Hospital Psychiatry
• Maternity Outpatient Clinic