Summary

Dr. John Johnkoski specializes in thoracic surgery and vascular surgery, bringing 38 years of experience to his practice. He earned his medical degree from the University of Michigan Medical School, establishing a strong foundation for his surgical expertise. Dr. Johnkoski is fluent in both English and Spanish, enabling him to serve a diverse patient population.

Dr. Johnkoski practices at Aspirus Wausau Hospital and sees patients in Wausau and Merrill, Wisconsin. His expertise includes treating serious heart conditions such as aortic valve stenosis and coronary artery disease, with particular focus on heart disease in women. He performs advanced procedures including mitral valve replacement surgery and provides comprehensive cardiac rehabilitation services. Patients have given him an average rating of 5.0, reflecting their confidence in his surgical care and expertise.

Overview based on verified provider data

Quick Facts

  • 5
  • 38 years of experience
  • speaks English, Spanish
  • University Of Michigan Medical School
  • 2 specialties
  • 3 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 3 office locations
  • Male

Office Locations

Dr. John Anthony Johnkoski has 3 locations

Aspirus Heart And Lung Surgery

425 Pine Ridge Blvd Ste 209Wausau, WI 54401
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Aspirus Wausau Hospital

333 Pine Ridge BlvdWausau, WI 54401

Aspirus Merrill Hospital

601 S Center AveMerrill, WI 54452

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Dr. John Anthony Johnkoski, MD
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Dr. John Anthony Johnkoski, MDDr. Daniel Aaron Brown, MDDr. Dennis James Costa, MDDr. Michelle Claire Ellis, MD
Thoracic SurgerySurgeryVascular SurgeryThoracic Surgery
Accepts New Patients Accepts New Patients
4.3 
38 Years of Experience 11 Years of Experience 25 Years of Experience 20 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks Spanish, English Speaks English
Wausau , WIWausau , WIWausau , WIAppleton , WI
Med School: University Of Michigan Medical School Med School: Ross University School Of Medicine Med School: Medical College Of Wisconsin Med School: University Of New Mexico School Of Medicine
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Insurance Plans Accepted by Dr. John Anthony Johnkoski

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. John Anthony Johnkoski has the following 2 specialties

Specialty Expertise

Dr. John Anthony Johnkoski has the following 3 areas of expertise

  • Atrial Fibrillation
  • Lung Cancer
  • Vascular Surgery

Certifications, License, & Education

38 Years Experience

Dr. John Anthony Johnkoski holds an expired medical license in the state of Wisconsin.

Medical License

Medical Doctor with an expired medical license in the state of Wisconsin that expired in 2025.

Education & Training

Medical School

Graduated from University Of Michigan Medical School in 1988.

NPI Number

Dr. Johnkoski's NPI number is 1992737035.

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Frequently Asked Questions

Is Dr. John Johnkoski accepting new patients?
Dr. John Johnkoski has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Does Dr. John Johnkoski accept my insurance?
You can see the insurance plans that Dr. John Johnkoski accepts on their Vitals profile.
Which hospitals is Dr. John Johnkoski affiliated with?
Dr. John Johnkoski is affiliated with Aspirus Wausau Hospital.
Where is Dr. John Johnkoski's office located?
Dr. John Johnkoski's office is located at 425 Pine Ridge Blvd Ste 209, Wausau, WI, 54401.
Does Dr. John Johnkoski accept virtual/telehealth appointments?
Dr. John Johnkoski has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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