Guillermo J. Ballarino, MD
Critical Care MedicinePulmonology
Highlights
Age Groups Seen
- Adult 18-65
- Older Adult >65
Languages
- Spanish
- English
Gender
MaleHospital Affiliations
- Nuvance Health - New Milford Hospital
- Nuvance Health - Danbury Hospital
Expertise
Education
- Fellowship: George Washington University School of Medicine, Pulmonary and Critical Care Medicine, 2012
- Residency: George Washington University Hospital, Internal Medicine, 2009
- Medical School: Universidad Nacional de Cordoba, 2002
Board Certifications
- Critical Care Medicine: American Board of Internal Medicine
- Internal Medicine: American Board of Internal Medicine
- Pulmonary Disease: American Board of Internal Medicine
Locations
- Nuvance Health Medical Practice - Pulmonary and Sleep Medicine Danbury
- 33 Germantown Road, Suite 2, Danbury, CT 06810
- Get Directions
- phone: 203-739-8330
- fax: 203-739-8931
- Nuvance Health Medical Practice - Pulmonary and Sleep Medicine New Milford
- 21 Elm Street, Floor 3, New Milford, CT 06776
- Get Directions
- phone: 203-739-8330
- fax: 203-739-8931
Insurance
- Aetna
- Anthem BlueCross Blue Shield Connecticut
- Centivo
- Cigna
- ConnectiCare
- Consumer Health Network
- Coventry-Aetna
- Humana Military
- MagnaCare
- Medicaid Connecticut
- Medicare Connecticut
- Medicare Railroad
- Multiplan Inc
- Northwell Direct
- Oxford Health Plans
- Tricare Humana Military
- United Healthcare
- US Family Health Plan
- Wellcare
Ratings & Reviews
4.9 out of 5
133 ratings, 10 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 12/13/2025
He was clear in his explanations, and took the time to answer all of my questions and concerns.
- 5 out of 5 starsReviewed on 12/8/2025
He spent time with me and explained everything to me and answered all my questions. It was a pleasure to meet him for the first time a real gentleman
- 5 out of 5 starsReviewed on 7/22/2025
Dr. Ballarino Is a wonderful doctor and explained my CAT scan very well. The only thing that upset me was the fact that I had to wait over a month for A telehealth appointment to get the results of my CAT scan. I saw my primary care doctor, and she looked at the results and told me that there was nothing significant to worry about. Dr. Ballarino gave me a better explanation of all that he saw and recommended that I have another CAT scan scanned in one year. If there was no significant increase in size of the nodule, then we would not worry about it anymore. So yes, I have great confidence in Dr. ballarino and couldn’t ask for a better doctor.
- 5 out of 5 starsReviewed on 7/10/2025
It has been a long time since I have visited a physician and felt attended to so thoroughly and sincerely. I trust that my concerns have been heard and that a plan will be made to improve my health.
- 5 out of 5 starsReviewed on 6/27/2025
First visit. He was very thorough and explained my possible condition to my husband and I.
- 5 out of 5 starsReviewed on 6/14/2025
He always goes above and beyond to make sure you understand what he is explaining. I wish all doctors were like him.
- 5 out of 5 starsReviewed on 6/4/2025
Dr Ballarino has an exceptional ability to explain things and his background in education and research also appears to be outstanding. I would highly recommend him to anyone.
- 5 out of 5 starsReviewed on 3/31/2025
Very skilled and caring
- 5 out of 5 starsReviewed on 3/28/2025
He made time to see me and he is a very good listener. He helped me feel so much better.
- 5 out of 5 starsReviewed on 3/23/2025
Took extra time and showed concern about my emotional concerns about CT scan results.