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, MD
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Dr. Dermot Anthony Oneill, MDDr. David L Johnson, MDDr. Warren L Miranda, MDDr. Gokul Thimmarayan
AnesthesiologyAnesthesiologyAnesthesiologyAnesthesiology
Accepts New Patients
39 Years of Experience 50 Years of Experience 61 Years of Experience 21 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks Russian, Chinese, English
Marshfield , WIMarshfield , WIMarshfield , WILittle Rock , AR
Med School: Royal College Of Surgeons In Ireland School Of Medicine Med School: Medical College Of Wisconsin Med School: University Of Santo Tomas Med School: Stanley Medical College
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

What languages does Dr. Dermot Oneill speak?
Dr. Dermot Oneill speaks Russian, Chinese, and English.
How can I make an appointment with Dr. Dermot Oneill?
You can find contact information for Dr. Dermot Oneill here on Vitals.
Does Dr. Dermot Oneill accept virtual/telehealth appointments?
Dr. Dermot Oneill has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. Dermot Oneill's office located?
Dr. Dermot Oneill's office is located at 1000 N Oak Ave, Marshfield, WI, 54449.
Which hospitals is Dr. Dermot Oneill affiliated with?
Dr. Dermot Oneill is affiliated with Marshfield Medical Center.

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