5
1 Rating
Summary
Dr. Brian O'Sullivan is a pulmonologist with 46 years of experience treating lung and respiratory conditions. He earned his medical degree from Dartmouth Medical School in Hanover, New Hampshire, and completed his residency at St. Christopher's Hospital for Children in Philadelphia. Dr. O'Sullivan pursued specialized fellowship training at both St. Christopher's Hospital for Children and Harvard School of Public Health in Boston, developing expertise in pulmonary medicine. He communicates with patients in English.
Dr. O'Sullivan practices at Dartmouth Hitchcock Medical Center and sees patients at locations in Manchester and Lebanon, New Hampshire. He specializes in treating complex respiratory conditions including cystic fibrosis and respiratory failure in both adult and pediatric patients. His expertise includes performing comprehensive lung function assessments and specialized breathing tests to diagnose asthma and other respiratory disorders. Patients consistently rate Dr. …O'Sullivan highly, giving him an average rating of 5.0 out of 5 stars.
Read More Read less Dr. O'Sullivan practices at Dartmouth Hitchcock Medical Center and sees patients at locations in Manchester and Lebanon, New Hampshire. He specializes in treating complex respiratory conditions including cystic fibrosis and respiratory failure in both adult and pediatric patients. His expertise includes performing comprehensive lung function assessments and specialized breathing tests to diagnose asthma and other respiratory disorders. Patients consistently rate Dr. …O'Sullivan highly, giving him an average rating of 5.0 out of 5 stars.
Overview based on verified provider data
Quick Facts
- accepting new patients
- 46 years of experience
- 13 insurance plans accepted
- speaks English
- Harvard School of Public Health Boston MA
- 2 specialties
- 3 areas of expertise
- 2 board certifications
- 1 hospital affiliation
- 2 office locations
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Locations
Brian P. O'sullivan has 2 locationsCompare with Similar Doctors
 |  |  |  |
| Brian P. O'sullivan, MD | Dr. John Patrick Brennan, MD | Dr. Eduardo Velez Velez Calderon, MD | Dr. Patrick Joseph Tangney, MD |
| Pulmonology | Critical Care Medicine | Pulmonology | Hospital Medicine |
| Accepts New Patients | Accepts New Patients | ||
| 46 Years of Experience | 24 Years of Experience | 29 Years of Experience | 39 Years of Experience |
| No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | Speaks English | Speaks Spanish, English | Speaks English |
| Manchester , NH | Exeter , NH | Lawrence , MA | Nashua , NH |
| Med School: Dartmouth Medical School Hanover NH | Med School: Tufts University School Of Medicine | Med School: Pontificia Universidad Javeriana Bogota Facultad De Medicina | Med School: Boston University School Of Medicine |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Brian P. O'sullivan
Medical Specialties
Brian P. O'sullivan has the following 2 specialties
Specialty Expertise
Brian P. O'sullivan has the following 3 areas of expertise
Certifications, License, & Education
46 Years Experience
Brian P. O'sullivan holds an expired medical license in the state of New Hampshire.
Medical License
Medical Doctor with an expired medical license in the state of New Hampshire that expired in 2026.
Education & Training
Fellowship
Completed their fellowship at Harvard School of Public Health Boston MA in 2012 and St. Christophers Hospital for Children Philadelphia PA in 1990.
Residency
Completed their residency at St. Christophers Hospital for Children Philadelphia PA in 1984.
Medical School
Graduated from Dartmouth Medical School Hanover NH in 1980.
NPI Number
Brian P. O'sullivan's NPI number is 1306820014.
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Frequently Asked Questions
- Which hospitals is Brian O'sullivan affiliated with?
- Brian O'sullivan is affiliated with Dartmouth Hitchcock Medical Center.
- Does Brian O'sullivan accept my insurance?
- You can see the insurance plans that Brian O'sullivan accepts on their Vitals profile.
- Is Brian O'sullivan accepting new patients?
- Brian O'sullivan is accepting new patients on Vitals. View Brian O'sullivan's profile on Vitals to make an appointment.
- Where is Brian O'sullivan's office located?
- Brian O'sullivan's office is located at 100 Hitchcock Way, Manchester, NH, 03104.
- How can I make an appointment with Brian O'sullivan?
- You can find contact information for Brian O'sullivan here on Vitals.
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