Daniel P. O'Brien, Jr, MD
Gastroenterology
Highlights
Age Groups Seen
- Adult 18-65
- Older Adult >65
Languages
- English
Gender
MaleHospital Affiliations
- Nuvance Health - Putnam Hospital
- Nuvance Health - Danbury Hospital
About Daniel P. O'Brien, Jr
Professional Statement
Get To Know Me
I believe in providing quality, individualized care for each of my patients in a friendly, caring and relaxed manner.
What is the most important thing your patients should expect from their professional relationship with you? What do you expect from them?
The most important aspect of the patient/physician relationship is mutual respect and trust.
How do you spend your personal time when you're not caring for patients?
I love spending quality time with my children. I also enjoy watching, participating in and coaching sports.
Why did you choose your specialty and what is its greatest reward?
I chose gastroenterology because of the mix of procedural aspects and personalized patient interactions, which provide an opportunity to have a positive impact on a patient’s health.
Expertise
Education
- Fellowship: SUNY Downstate Medical Center, Gastroenterology, 2014
- Residency: SUNY Downstate Medical Center, Internal Medicine, 2011
- Internship: SUNY Downstate Medical Center, Internal Medicine, 2009
- Medical School: State University of NY Brooklyn, 2008
Board Certifications
- Gastroenterology: American Board of Internal Medicine
Locations
- Nuvance Health Medical Practice - Gastroenterology Danbury
- 111 Osborne Street, 2nd Floor, Floor 2, Danbury, CT 06810
- Get Directions
- phone: 203-739-7038
- fax: 203-739-1961
- Nuvance Health Medical Practice - Gastroenterology Ridgefield
- 901 Ethan Allen Highway, Suite 110, Ridgefield, CT 06877
- Get Directions
- phone: 203-739-7038
- fax: 203-739-1961
Insurance
- Aetna
- Anthem BlueCross Blue Shield Connecticut
- Capital District Physicians' Health Plan
- Centivo
- Cigna
- ConnectiCare
- Consumer Health Network
- Coventry-Aetna
- Emblem Health
- EmblemHealth
- Empire BlueCross Blue Shield
- Empire Health Plan
- Empire Plan
- Fidelis Care
- Hamaspik
- MagnaCare
- Medicaid Connecticut
- Medicaid New York
- Medicare Connecticut
- Medicare New York
- Medicare Railroad
- Multiplan Inc
- MVP Health Care
- Northwell Direct
- Oxford Health Plans
- Tricare Humana Military
- United Healthcare
- US Family Health Plan
- Wellcare
Ratings & Reviews
4.9 out of 5
168 ratings, 12 reviewsProvider star ratings are calculated using patient responses to the provider care questions in our patient experience survey. Below you can see the provider’s star rating and the number of his or her patients who have provided feedback. Ratings depicted represent those clinicians that have at least 30 completed surveys on a rolling 12 month basis.
- 5 out of 5 starsReviewed on 12/29/2025
Dr O’Brien is knowledgeable, personable, easy to talk to and understand.
- 5 out of 5 starsReviewed on 12/8/2025
He always takes time to explain and discuss my concerns. I know I’m in good hands!
- 5 out of 5 starsReviewed on 12/8/2025
He understood the issues I was dealing with and reviewed options I had and his best solution to take care of things
- 5 out of 5 starsReviewed on 7/26/2025
Very professional and made feel very comfortable
- 5 out of 5 starsReviewed on 7/10/2025
Dr O’Brien and his staff were outstanding!
- 5 out of 5 starsReviewed on 7/4/2025
Dr. O’Brien is a personable competent physician. I knew I was in good hands.
- 5 out of 5 starsReviewed on 6/13/2025
Excellent communication with me and my family.
- 5 out of 5 starsReviewed on 6/12/2025
Dr O’Brien has provided fantastic medical oversight to me in for close to 10 years. He has performed procedures for me at both scheduled and unscheduled office visits as well as planned colonoscopies. He always makes me feel comfortable and answers questions in a kind and empathetic demeanor
- 5 out of 5 starsReviewed on 6/10/2025
Excellent doctor. Just long delay to get the first appointment.
- 5 out of 5 starsReviewed on 3/31/2025
Took time to explain my condition- thoroughly explained the options for remediation.
- 5 out of 5 starsReviewed on 3/6/2025
Dr. O’Brien always answers my questions and takes the time to explain something if I don’t understand. He is kind and compassionate
- 5 out of 5 starsReviewed on 3/3/2025
Spoke with me in clear language that I understood. Friendly and respectful.