arrow
  • Emergency Medicine, Family Medicine
  • 48 years of experience
  • Mercyone North Iowa Family Medicine Residency 1010 4th St SW Ste 340, Mason, IA 50401
  • (641) 428-7766

Brief Intro

Dr. Johannesen graduated from the Loyola University of Chicago Stritch School of Medicine in 1977. He works in Mason City, IA and 1 other location and specializes in Family Medicine and Emergency Medicine. Dr. Johannesen is affiliated with Mercyone North Iowa Medical Center.

View More

Education Background

RESIDENCY

University Of Iowa Hospitals & Clinics

MEDICAL SCHOOL

Loyola University Of Chicago Stritch School Of Medicine - 1977

Languages Spoken

  • Spanish
  • English

Location & Hours

  • Mercy Family Clinics
  • 1010 4th St SW Ste 340, Mason, IA 50401
  • Mon:8:00 am - 5:00 pm
    Tue:8:00 am - 5:00 pm
    Wed:8:00 am - 5:00 pm
    Thu:8:00 am - 5:00 pm
    Fri:8:00 am - 5:00 pm
    Sat:Closed
    Sun:Closed

Specialties Treated

  • Family Medicine
  • Emergency Medicine

Conditions Addressed

  • Abnormal Vaginal Bleeding
  • Uterine Leiomyoma
  • Hair Loss
  • Irritable Bowel Syndrome (IBS)
  • Hyperthyroidism
  • Transient Cerebral Ischemia
  • Rheumatoid Arthritis
  • Atherosclerosis
  • Hemolytic Anemia
  • Diverticulosis
  • Epilepsy
  • Internal Derangement of Knee Cartilage
  • Cardiac Arrhythmia
  • Gastrointestinal Hemorrhage
  • Candidiasis
  • Schizophrenia
  • Esophagitis
  • Benign Prostatic Hypertrophy (BPH)
  • Hemorrhagic stroke
  • Urinary Tract Infection (UTI)
  • Chronic Sinusitis
  • Non-Toxic Goiter
  • Phlebitis and Thrombophlebitis
  • Gingival and Periodontal Diseases
  • Undescended and Retractile Testicle
  • Cirrhosis
  • Gastroesophageal Reflux Disease (GERD)
  • Osteoporosis
  • Insomnia
  • Acute Bronchitis
  • Genital HPV
  • Skin Rash
  • Chronic Renal Disease
  • Hearing Loss
  • Burns
  • Ventral Hernia
  • Ischemic Stroke
  • Plantar Warts
  • Premenstrual Syndrome (PMS)
  • Celiac Disease
  • Urinary Incontinence
  • Rotator cuff syndrome
  • Sunburn
  • Malignant Neoplasm of Female Breast
  • Venous Embolism and Thrombosis
  • Anxiety Dissociative and Somatoform Disorders
  • Chronic Bronchitis
  • Tinea Unguium
  • Aortic Valvular Disease
  • Sexually Transmitted Diseases (STDs)
  • Ankylosing Spondylitis (AS)
  • Internal Derangement of Knee
  • Plantar Fasciitis
  • Intestinal Obstruction
  • Dehydration
  • Spinal Stenosis
  • Infectious Liver Disease
  • Hypertension (HTN)
  • Tension Headache
  • Intracranial Injury
  • Pneumonia
  • Infectious Mononucleosis
  • Conduction Disorders
  • Disorders of Lipoid Metabolism
  • Acute Renal Failure
  • Anxiety Phobic Disorders
  • Obstructive Sleep Apnea
  • Croup
  • Sciatica
  • Depressive Disorders
  • Herpes Genitalis
  • Septicemia
  • Systemic Lupus Erythematosus
  • Calculus of the Urinary System
  • Psoriasis
  • Acute Pharyngitis
  • Candidiasis of Vulva and Vagina
  • Intervertebral Disc Degeneration
  • Angina Pectoris
  • Osteoarthritis
  • Bronchial Asthma
  • Alcohol Dependence
  • Lateral Epicondylitis
  • Inguinal Hernia
  • Atrial Fibrillation and Atrial Flutter
  • Anal or Rectal Abscess
  • Osteomyelitis
  • Breast Disorders
  • Acne
  • Otitis Media
  • Gastritis and Duodenitis
  • Restless Leg Syndrome
  • Benign Thyroid Diseases
  • Hemorrhoids
  • Emphysema
  • Parkinson's Disease
View More
  • Cancer 6
  • Cardiology, Heart & Vascular Surgery 8
  • Orthopedics 17
  • Neurology & Neurosurgery 13
  • Gastroenterology & GI Surgery 15
  • Pulmonology & Lung Surgery 15
  • Diabetes & Endocrinology 4
  • Children's Hospital 2
  • Urology 13
  • Psychiatry 15
  • Geriatrics 15
  • Rehabilitation 16
  • Obsterics & Gynecology 2
  • Ophthalmology 1
  • Ear, Nose & Throat 1
  • Rheumatology 1
  • Long Term Care 2
  • Maternity Care (Uncomplicated Pregnancy) 8