Summary

Dr. Oneill graduated from the Royal College of Surgeons In Ireland School of Medicine in 1987. He works in Marshfield, WI and 1 other location and specializes in Anesthesiology and Other Specialty. Dr. Oneill is affiliated with Marshfield Medical Center.

Quick Facts

  • 5
  • 39 years of experience
  • speaks Russian, Chinese, English
  • Royal College Of Surgeons In Ireland School Of Medicine
  • 1 written review
  • 2 specialties
  • 2 areas of expertise
  • 1 hospital affiliation
  • 2 office locations
  • Male

Office Locations

Dr. Dermot Anthony Oneill has 2 locations

Marshfield Clinic Marshfield Center

1000 N Oak AveMarshfield, WI 54449
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

Ministry St Josephs Hospital

611 N Saint Joseph AveMarshfield, WI 54449
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

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Dr. Dermot Anthony Oneill, MDChristopher A JusticeDr. Charles Patrick Strachan, MDDr. Douglas John Raether, MD
AnesthesiologyNurse PractitionerAnesthesiologyAnesthesiology
Accepts New Patients Accepts New Patients
39 Years of Experience 42 Years of Experience 47 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks Russian, Chinese, English Speaks Russian, Chinese Speaks Chinese, Russian, English Speaks English
Marshfield , WIMarshfield , WIMarshfield , WIRice Lake , WI
Med School: Royal College Of Surgeons In Ireland School Of Medicine Med School: University Of Wisconsin School Of Medicine & Public Health Med School: Medical College Of Wisconsin
Current Profile
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Insurance Plans Accepted by Dr. Dermot Anthony Oneill

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

Medical Specialties

Dr. Dermot Anthony Oneill has the following 2 specialties

Specialty Expertise

Dr. Dermot Anthony Oneill has the following 2 areas of expertise

  • Anesthesia
  • Other

Certifications, License, & Education

39 Years Experience

MEDICAL LICENSE

Medical Doctor, Wisconsin, 2025, Expired

EDUCATION & TRAINING

Medical School

Royal College Of Surgeons In Ireland School Of MedicineGraduated in 1987

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Frequently Asked Questions

How can I make an appointment with Dr. Dermot Oneill?
You can find contact information for Dr. Dermot Oneill here on Vitals.
Is Dr. Dermot Oneill accepting new patients?
Dr. Dermot Oneill has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Does Dr. Dermot Oneill accept my insurance?
You can see the insurance plans that Dr. Dermot Oneill accepts on their Vitals profile.
Which hospitals is Dr. Dermot Oneill affiliated with?
Dr. Dermot Oneill is affiliated with Marshfield Medical Center.
Where is Dr. Dermot Oneill's office located?
Dr. Dermot Oneill's office is located at 1000 N Oak Ave, Marshfield, WI, 54449.

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