4
2 Ratings with 1 written Review
Summary
Dr. Cornelius Oneill is a physician specializing in internal medicine and surgery with four decades of clinical experience. He earned his medical degree from the University of Mississippi School of Medicine and completed his residency training at LSU Health Sciences. His extensive background spans 44 years of patient care, providing him with deep expertise in managing complex medical conditions.
Dr. Oneill practices at the GV Sonny Montgomery Department of Veterans Affairs Medical Center in Jackson, Mississippi. He focuses on treating heart rhythm disorders, including atrial fibrillation and irregular heartbeats that can cause palpitations or chest discomfort. His surgical skills include performing diagnostic procedures such as heart rhythm monitoring with EKGs and colonoscopies to screen for digestive system problems. Patients have given him an average rating of 4.0 out of 5 stars.
Dr. Oneill practices at the GV Sonny Montgomery Department of Veterans Affairs Medical Center in Jackson, Mississippi. He focuses on treating heart rhythm disorders, including atrial fibrillation and irregular heartbeats that can cause palpitations or chest discomfort. His surgical skills include performing diagnostic procedures such as heart rhythm monitoring with EKGs and colonoscopies to screen for digestive system problems. Patients have given him an average rating of 4.0 out of 5 stars.
Overview based on verified provider data
Quick Facts
- 44 years of experience
- 4 insurance plans accepted
- Lsu Health Sciences
- 1 written review
- 2 specialties
- 7 areas of expertise
- 2 board certifications
- 1 hospital affiliation
- 1 office location
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Location
Compare with Similar Doctors
 | |  | |
| Dr. Cornelius John Oneill, MD | Dr. Shanna Pettie, MD | Dr. Muhammad K Nawaz | Dr. Emily Kristen Evans |
| Internal Medicine | Internal Medicine | Internal Medicine | Surgery |
| Accepts New Patients | |||
| 44 Years of Experience | 18 Years of Experience | 38 Years of Experience | 8 Years of Experience |
| No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | |||
| Jackson , MS | Jackson , MS | Jackson , MS | Ridgeland , MS |
| Med School: University Of Mississippi School Of Medicine | Med School: Wayne State University School Of Medicine | Med School: Rawalpindi Medical College | Med School: University Of Mississippi School Of Medicine |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Cornelius John Oneill
Medical Specialties
Dr. Cornelius John Oneill has the following 2 specialties
Specialty Expertise
Dr. Cornelius John Oneill has the following 7 areas of expertise
Certifications, License, & Education
44 Years Experience
Dr. Cornelius John Oneill holds an active medical license in the state of Mississippi.
Medical License
Medical Doctor with an active medical license in the state of Mississippi that expired in 2026.
Education & Training
Residency
Completed their residency at Lsu Health Sciences.
Medical School
Graduated from University Of Mississippi School Of Medicine in 1982.
NPI Number
Dr. Oneill's NPI number is 1962420257.
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Frequently Asked Questions
- Does Dr. Cornelius Oneill accept virtual/telehealth appointments?
- Dr. Cornelius Oneill has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Is Dr. Cornelius Oneill accepting new patients?
- Dr. Cornelius Oneill has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
- Does Dr. Cornelius Oneill accept my insurance?
- You can see the insurance plans that Dr. Cornelius Oneill accepts on their Vitals profile.
- How can I make an appointment with Dr. Cornelius Oneill?
- You can find contact information for Dr. Cornelius Oneill here on Vitals.
- Which hospitals is Dr. Cornelius Oneill affiliated with?
- Dr. Cornelius Oneill is affiliated with Gv Sonny Montgomery Department Of Veterans Affairs Medical Center.
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