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Summary
Dr. John Oneill is an internal medicine physician who also specializes in emergency medicine. He earned his medical degree from SUNY Downstate Medical Center College of Medicine and brings 24 years of clinical experience to his practice. Dr. Oneill speaks English and provides comprehensive care across both inpatient and emergency settings.
Dr. Oneill is affiliated with MedStar Georgetown University Hospital and Allegheny General Hospital, practicing in Washington, DC. He treats patients with complex conditions including head injuries, strokes, and neck strains. His expertise extends to diagnostic imaging procedures such as CT scans and chest X-rays. John Oneill combines his dual specialty training to deliver thorough medical care for both routine internal medicine needs and urgent health situations.
Dr. Oneill is affiliated with MedStar Georgetown University Hospital and Allegheny General Hospital, practicing in Washington, DC. He treats patients with complex conditions including head injuries, strokes, and neck strains. His expertise extends to diagnostic imaging procedures such as CT scans and chest X-rays. John Oneill combines his dual specialty training to deliver thorough medical care for both routine internal medicine needs and urgent health situations.
AI-generated from data on this provider profile.
Quick Facts
- 24 years of experience
- speaks English
- Suny Downstate Medical Center College Of Medicine
- 2 specialties
- 2 areas of expertise
- 2 board certifications
- 2 hospital affiliations
- 2 office locations
- Male
Office Locations
Dr. John Michael Oneill has 2 locationsCompare with Similar Doctors
 |  |  |  |
| Dr. John Michael Oneill, MD | Dr. Michelle Zucherman, DO | Dr. Meera Ramakrishnan, MD | Dr. Paul Andrew Silver, MD |
| Internal Medicine | Internal Medicine | Internal Medicine | Internal Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 24 Years of Experience | 18 Years of Experience | 47 Years of Experience | |
| No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | Speaks English | Speaks Spanish, English | Speaks English |
| Washington , DC | Fairfax , VA | Gaithersburg , MD | Washington , DC |
| Med School: Suny Downstate Medical Center College Of Medicine | Med School: Lake Erie College of Osteopathic Medicine | Med School: Albert Einstein College of Medicine | Med School: Hahnemann University School Of Medicine |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. John Michael Oneill
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. John Michael Oneill has the following 2 specialties
Specialty Expertise
Dr. John Michael Oneill has the following 2 areas of expertise
Certifications, License, & Education
24 Years Experience
MEDICAL LICENSE
Medical Doctor, District Of Columbia, 2026, Active
EDUCATION & TRAINING
Medical School
Suny Downstate Medical Center College Of MedicineGraduated in 2002
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Frequently Asked Questions
- What languages does Dr. John Oneill speak?
- Dr. John Oneill speaks English.
- Does Dr. John Oneill accept my insurance?
- You can see the insurance plans that Dr. John Oneill accepts on their Vitals profile.
- Which hospitals is Dr. John Oneill affiliated with?
- Dr. John Oneill is affiliated with Medstar Georgetown University Hospital and ALLEGHENY GENERAL HOSPITAL.
- Does Dr. John Oneill accept virtual/telehealth appointments?
- Dr. John Oneill has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Where is Dr. John Oneill's office located?
- Dr. John Oneill's office is located at 3800 Reservoir Rd Nw, Washington, DC, 20007.
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