Mary L. Johnston, APRN

Adult Health Nurse Practitioner

Ms. Mary L. Johnston is an Adult Health Nurse Practitioner in New Haven, CT with special training and skill in providing medical care to adults of all ages. As an Adult Health Nurse Practitioner, Mary L. Johnston, APRN performs diagnostic tests, and prevents and treats illnesses and injuries. Adult Nurse Practitioner is the diagnosis and treatment of acute and chronic medical conditions. Significant diseases and conditions treated by Adult Health Nurse Practitioners include wounds, sprains, fractures, infections, viruses, hypertension, hormone imbalance, thyroid dysfunction, and diabetes. Medical tests, procedures and therapies provided by Adult Health Nurse Practitioners include ordering diagnostic tests, interpreting lab results and X-rays, prescribing medications, referring patients to specialists, and acting as a primary health care provider.