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Summary
Dr. John Oneill treats tobacco use disorder, COVID-19, and abdominal pain, and performs emergency care, electrocardiograms, and therapeutic hypothermia. He practices internal medicine and emergency medicine and has 24 years of experience. Dr. Oneill is affiliated with Medstar Georgetown University Hospital and Allegheny General Hospital. He earned his medical degree from SUNY Downstate Medical Center College of Medicine and sees patients in Washington, DC.
Overview based on verified provider data
Quick Facts
- 24 years of experience
- speaks English
- Suny Downstate Medical Center College Of Medicine
- 2 specialties
- 2 areas of expertise
- 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. Mandana Shafai, MD | Dr. Janan Gohari, MD | Dr. Michelle Zucherman, DO |
| Internal Medicine | Internal Medicine | Internal Medicine | Internal Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 24 Years of Experience | 34 Years of Experience | 17 Years of Experience | 5 Years of Experience |
| No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option | Virtual Visit Available |
| Speaks English | Speaks English, Spanish | Speaks English | |
| Washington , DC | Fairfax , VA | Gaithersburg , MD | Fairfax , VA |
| Med School: Suny Downstate Medical Center College Of Medicine | Med School: Wright State University Boonshoft School Of Medicine | Med School: Howard University College Of Medicine | Med School: Lake Erie College of Osteopathic 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
Dr. John Michael Oneill holds an expired medical license in the state of District Of Columbia.
Medical License
Medical Doctor with an expired medical license in the state of District Of Columbia that expired in 2026.
Education & Training
Medical School
Graduated from Suny Downstate Medical Center College Of Medicine in 2002.
NPI Number
Dr. Oneill's NPI number is 1215138730.
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Frequently Asked Questions
- What languages does Dr. John Oneill speak?
- Dr. John Oneill speaks English.
- Which hospitals is Dr. John Oneill affiliated with?
- Dr. John Oneill is affiliated with Medstar Georgetown University Hospital and ALLEGHENY GENERAL HOSPITAL.
- Where is Dr. John Oneill's office located?
- Dr. John Oneill's office is located at 3800 Reservoir Rd Nw, Washington, DC, 20007.
- How can I make an appointment with Dr. John Oneill?
- You can find contact information for Dr. John Oneill here on Vitals.
- Does Dr. John Oneill accept my insurance?
- You can see the insurance plans that Dr. John Oneill accepts on their Vitals profile.
Data Sources
This provider profile is built using data from:
- NPPES NPI Registry
- State medical licensing boards
- Healthcare system and provider network data
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