
Highlights
Age Groups Seen
- Adults
- Geriatrics
Languages
- English
Gender
MaleLocations
- Brigham and Women's Allergy and Immunology Clinic
- 850 Boylston Street, Suite 540, Chestnut Hill, MA 02467
- Get Directions
- phone: 617-732-9850
- fax: 617-731-2748
- Brigham and Women's Allergy and Immunology Clinic
- 22 Patriot Place, Foxborough, MA 02035
- Get Directions
- phone: 508-718-4010
- fax: 508-718-4011
Expertise
Education
- Fellowship: Brigham and Women's Hospital, Allergy and Immunology, 2011
- Residency: Brigham and Women's Hospital, Internal Medicine, 2008
- Medical Education: University of Pennsylvania, 2005
Board Certifications
- Allergy and Immunology: American Board of Allergy and Immunology, 2010
Insurance
- Aetna
- Beech Street
- Blue Cross Blue Shield
- Blue Cross Blue Shield Medicare
- Cigna
- Commonwealth Care Alliance
- Coventry
- Fallon Health
- Harvard Pilgrim Health Care
- Humana
- Mass General Brigham Health Plan
- MassHealth
- Medicaid ME
- Medicaid NH
- Medicare
- Medicare ACO
- Multiplan
- Senior Whole Health
- TriCare
- Tufts Health Plan
- Tufts Medicare Preferred
- United Health Care
- Wellpoint
- WellSense
Ratings & Reviews
4.8 out of 5
128 ratings, 71 reviewsThe Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
- Reviewed on 2/8/2026
Dr. Brennan listened and heard me. He clearly explained my options and his recommendations. I felt he truly cared about me and my issue. He reviewed each aspect of the consent document. He was personable and kind. Excellent provider!
- Reviewed on 2/4/2026
Listened and explained things very well
- Reviewed on 2/2/2026
He was exceptional!
- Reviewed on 1/28/2026
Not that it was happening, but somebody should go out of their way to appreciate this guy. I had two other appointments in the past where they go for the most and make it a big deal. They didn't really get much out of it. This guy went above and beyond. I don't really know how he does it because he's getting into New York City and a bunch of good stuff. It was a very calmed out. So it's not the band raid, but it was excellent. It's what you would want from a doctor's appointment.
- Reviewed on 1/22/2026
Very kind and patient and explained things really well and I definitely want to go back.
- Reviewed on 1/19/2026
I have been suitably impressed with the professionalism, courtesy, and efficiency of all the folks I've interacted with here from my very first visit.
- Reviewed on 1/20/2026
It was great, and got answers to my questions.
- Reviewed on 1/12/2026
I was very impressed by how kind and professional everyone was at this office I was my first time being seen there so it was a great first impression.
- Reviewed on 1/12/2026
I was thoroughly impressed with the knowledge and respect of the doctor.
- Reviewed on 12/24/2025
Dr.Brennan is wonderful. He is very knowledgeable and caring and always listens to any concerns you may have .
- Reviewed on 12/24/2025
I was very impressed with the amount of time the doctor took with me.
- Reviewed on 12/21/2025
Absolutely love Dr Brennan ! He is very personable, caring and listens to you. He explains everything very thoroughly
- Reviewed on 12/16/2025
Excellent information and inquiry by the Doctor and team. Very respectful and informed about my concerns and history. Provided me with a solid plan for moving forward and follow up instructions.
- Reviewed on 12/15/2025
Seem to be very knowledgeable, thorough and a great bedside manner!
- Reviewed on 12/14/2025
Virtual appointments are very convenient and thorough for follow up appointments. Especially true for senior patients who might otherwise cancel.
- Reviewed on 12/14/2025
I thought he was terrific. He listened carefully and genuinely tried to help me solve my problem and answered a ton of questions.
- Reviewed on 12/11/2025
During my visit with Dr. Brennan he recommended a different eye drop than I was using which has been markedly better. I do not have as much tearing as I had experienced previously.
- Reviewed on 12/11/2025
Dr. Brennan was extremely thorough, had read the file, knew the history, and was able to give accurate and helpful recommendations about care going forward.
- Reviewed on 12/4/2025
I am glad to have met dr. Brennan, he is the type of professional we come to expect at Brigham. I am sure his work will be helpful to my other specialists and pcp. Got a lot of questions answered concerning my condition.
- Reviewed on 12/2/2025
Thanks for really listening to me and for explaining all of the details about the various meds I'm taking.
- Reviewed on 12/1/2025
He is very thorough and takes time to listen and discuss.
- Reviewed on 11/24/2025
B & W caregivers are professional, timely and helpful.
- Reviewed on 11/17/2025
He listened but also told me which allergy medication to take. Explained how to use nasal sprays etc. he was very knowledgeable
- Reviewed on 11/16/2025
I was thrilled! I feel great about the care I'm getting and am so happy the location is very convenient and easy to park.
- Reviewed on 11/10/2025
My first visit to see Dr. Brennan. Repetitive episodes of anaphylaxis with unknown trigger. Spectacular, thoughtful, caring doctor. Most importantly, there is a very good chance that the diagnosis is correct. One of those cases when the visit to the doctor's office is likely to improve dramatically the quality of life. Thank you.
- Reviewed on 11/3/2025
Dr. Brennan is very thorough, he's knowledgeable, and has always been able to help and figure out my needs, my medical needs, and adequate plan.
- Reviewed on 11/2/2025
Dr. Patrick Brennan is a great Doctor!
- Reviewed on 10/28/2025
He is the Best..
- Reviewed on 10/22/2025
The provider was personal, but professional. He took time to listen to my experiences regarding my allergies, and he explained his thoughts and recommendations in a way that I could easily understand.
- Reviewed on 10/16/2025
Dr. Brennan is highly professional, confident, he listens to his patients, and he is stars and garters ahead above his peers of specialists and doctors.
- Reviewed on 10/13/2025
Very knowledgeable and explained things well. Pleased with outcome.
- Reviewed on 10/13/2025
Dr. Brennan was very clear in what he thought may be going on with my current conditions and what he recommends going forward.
- Reviewed on 10/6/2025
Great provider. I was seen very quickly and he explained everything thoroughly. I felt respected and understood.
- Reviewed on 10/5/2025
I was so impressed with Dr Brennan's thoroughness,questions he asked me regarding my allergies that I never thought of. In addition, he was kind and friendly. Top notch.
- Reviewed on 10/15/2025
Dr Brennan was amazing! He was thoughtful and took to the time to listen to all my issues. Then he came up with a good course of action, including some med changes that seem to be helpful. He is by far the best allergist, and one of the best doctors, I have ever seen!
- Reviewed on 9/27/2025
Very knowledgeable, was familiar with my history, had options and ideas for treatment, and interested in my whole body health.
- Reviewed on 10/1/2025
Excellent first time visit with Dr. Brennan. Took the time to listen to me and he asked many questions to get the full picture.
- Reviewed on 9/17/2025
He listened to my concerns, answered my questions and gave me the time to take care of my issue.
- Reviewed on 9/15/2025
Dr Patrick Brennan was very professional and took the time to evaluate my issue and walk me through his perspective of what I was experiencing. Overall, a very positive experience.
- Reviewed on 9/14/2025
Thorough,honest,good sense of humor,did what I needed to do
- Reviewed on 9/7/2025
The provider always listens and knows upcoming studies. Is very current with what is happening in this disease. Willing to try things and offers to see/email if concerns.
- Reviewed on 9/1/2025
Everything was excellent all Dr Brennan was excellent
- Reviewed on 8/21/2025
Very friendly and knowledgeable in his field. Offers great feedback and advice.
- Reviewed on 8/19/2025
Went over and above my expectations.
- Reviewed on 8/11/2025
Dr Brennan was excellent. He demonstrated a professional and caring demeanor backed up with a remarkable amount of knowledge. A distinguished and kind dr that I highly recommend.
- Reviewed on 8/5/2025
It was my first time seeing an allergist. He was extremely helpful and gave me a better understanding about my allergies and how better to use my meds as well as introducing a new allergy spray. Also, now knowing what I'm actually allergic to and better ways protecting myself against these allergens. Overall very informative and helpful. Thank you Dr. Brennan!
- Reviewed on 8/4/2025
I was totally impressed by Dr. Brennan. He listened to me and really took his time to figure out how to best treat me. He also reached out to the Pulmonary department to try to get me an appointment sooner than the one I have, [redacted]. I would recommend him to everyone.
- Reviewed on 7/21/2025
1st meeting. Very thorough. Explained next steps.
- Reviewed on 7/16/2025
I as there only for allergy shots but had a reaction to them and needed Dr Brennan as well as [redacted] the nurse as they had to administer an EPI pen treatment. Couldn't be happier with the care and attention over 90 additional minutes I was there. 5 stars for both.
- Reviewed on 7/14/2025
He can't diagnose my problem, so is recommending me to a specialist who hopefully can.
- Reviewed on 7/14/2025
Dr. Brennan was kind, thorough, helpful, and knowledgeable about my various allergies. He made good suggestions about treatment. He is the best doctor I've ever seen in the area of allergies. A friend recommended him to me, because she felt the same way. He's a top tier doctor and I'm glad to have found him.
- Reviewed on 7/7/2025
He seemed to really analyze my situation and feels it could be something in addition to my asthma that is causing issues. He recommended several other doctors to address these issues
- Reviewed on 7/5/2025
Attentive.
- Reviewed on 6/29/2025
I have consistently been impressed with all the folks here: knowledgable, professional, and kind all around.
- Reviewed on 6/30/2025
This was my first appointment with this doctor. I felt very comfortable with him.
- Reviewed on 6/29/2025
Provider was excellent listening clarifying and explaining. Felt he vas very thorough.
- Reviewed on 6/14/2025
Very friendly helpful understanding
- Reviewed on 6/11/2025
Professional thoughtful problem solver I threw a lot at him and he had patience of a saint Thanks
- Reviewed on 6/7/2025
Dr. Brennan is kind, compassionate and always interested in what treatment is the best fit for me. I greatly appreciate his care.
- Reviewed on 6/4/2025
the provider took the time to listen and acknowledged all of my concerns. the provider provided helpful and thoughtful feedback.
- Reviewed on 5/11/2025
Dr. Brennan was very friendly and very knowledgeable and he really demonstrated how much he cared about me as a patient and how much he made me realize that he wasn't into doing unnecessary procedures or providing or unnecessary prescriptions. He was very clear in his comments to me, made sure that I understood and let me ask questions until I understood fully. Thank you.
- Reviewed on 5/7/2025
He is a wonderful Knowledgeable , patient and caring. I feel very taken xare of
- Reviewed on 4/21/2025
Very knowledgeable, clear communicator.
- Reviewed on 4/21/2025
Fantastic! The Dr took his time with me, asked questions about my history, paid attention, didn't rush, polite, respectful, eager to help. I felt like he cared about my well being and he answered all my questions in a way I'd understand. My experience was superb, I highly recommend.
- Reviewed on 4/21/2025
I was very happy with Dr. Brennan's care. He was very warm. He listened to what I had to say. He was very knowledgeable. He explained what was going on with me. We talked about medications. He enlightened me about this. I have been very satisfied. Everyone from nurses and receptionists and the doctor was right on with their job. Everybody did their job in a courteous, friendly way. I am very satisfied. Thank you.
- Reviewed on 4/16/2025
The doctor was, he was fine. I have no complaints about the doctor.
- Reviewed on 4/14/2025
I'm happy with the care provided
- Reviewed on 4/7/2025
Dr Brennan was kind and knowledgeable. He listened to what my goals were and was authentic in supporting my quality of health. He responded to my questions and explained thoroughly his thoughts and expertise. I felt at ease and comfortortable during the visit.
- Reviewed on 4/14/2025
Very personable and attentive to my concerns. Explained things very clearly and answered all my questions
- Reviewed on 4/4/2025
Dr. Brennan is an excellent listener and also extremely knowledgeable, keeping up with the research literature. Definitely one of the best doctors I've interacted with. Thanks!
- Reviewed on 4/1/2025
He listened, spent adequate time