Highlights
Age Groups Seen
- Adults
- Geriatrics
Languages
- French
- English
Gender
FemaleAbout Alyssa R Letourneau
Dr. Alyssa R. Letourneau earned a Bachelor of Science in neuroscience from Brown University and her M.D. from Yale University School of Medicine. She completed a combined residency in internal medicine and pediatrics at Massachusetts General Hospital, followed by a fellowship in infectious diseases at Massachusetts General Hospital and Brigham & Women's Hospital. During her training, she received the Edward Kass Award for Clinical Excellence from the Massachusetts Infectious Disease Society and earned a Master of Public Health from the Harvard School of Public Health. She then completed an additional year of advanced clinical training focused on the care of immunocompromised patients at Brigham & Women's Hospital and the Dana-Farber Cancer Institute.
Dr. Letourneau previously served for 10 years as Medical Director of the MGH Antimicrobial Stewardship Program and as co-chair of the Mass General Brigham Antimicrobial Stewardship and Infectious Diseases Quality Collaborative. She is currently a physician in the Division of Infectious Diseases at Massachusetts General Hospital and an Assistant Professor of Medicine at Harvard Medical School. She provides care to patients in both the inpatient and outpatient settings.
Her clinical interests include the care of immunocompromised patients, particularly those with leukemia or lymphoma, individuals who have undergone stem cell transplant or CAR-T therapy, and patients receiving immune-modulating therapies. She also has expertise in the management of multidrug-resistant organisms and mycobacterial infections.
In recognition of her commitment to education, Dr. Letourneau received the Mass General Brigham Infectious Disease Fellows Faculty Teaching Award in both 2021 and 2022. In 2023, she was elected a Fellow of the Infectious Diseases Society of America and was named a Top Doctor in Boston by Boston Magazine, an honor she has since received annually.
Locations
- Massachusetts General Infectious Disease Clinic
- 55 Fruit Street, Cox Building, 5t Floor, Suite 515, Boston, MA 02114
- Get Directions
- phone: 617-726-3906
- fax: 617-726-7653
Expertise
Education
- Fellowship: Brigham and Women's Hospital, Infectious Disease, 2014
- Fellowship: Massachusetts General Hospital, Infectious Disease, 2012
- Residency: Massachusetts General Hospital, Internal Medicine/Pediatrics, 2010
- Medical Education: Yale University School of Medicine, 2006
Board Certifications
- Internal Medicine: American Board of Internal Medicine, 2012
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
- Maine Community Health Options
- Mass General Brigham Health Plan
- MassHealth
- Medicaid ME
- Medicaid NH
- Medicaid RI
- Medicaid VT
- Medicare
- Multiplan
- Railroad Medicare
- Senior Whole Health
- TriCare
- Tufts Health Plan
- Tufts Medicare Preferred
- United Health Care
- Wellpoint
- WellSense
- WellSense NH
Ratings & Reviews
4.9 out of 5
46 ratings, 25 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 3/23/2026
Thoughtful and engaging discussion Cared about me
- Reviewed on 3/22/2026
Fantastic doctor
- Reviewed on 3/1/2026
Easy to talk too. Knows my medical history.
- Reviewed on 2/8/2026
This is my 3rd visit with Dr Letourneau. She is always well prepared, I feel heard, and feel like a partner in my health care, which is extremely important to me.
- Reviewed on 2/6/2026
Alyssa Letourneau is a fabulous doctor. I couldn't say enough about her.
- Reviewed on 1/25/2026
Always helpful
- Reviewed on 12/16/2025
Perfect
- Reviewed on 12/15/2025
The best of the best. Excellent Dr.!
- Reviewed on 12/14/2025
I see her as a consultant in addition to my regular pulmonologist, who is at Mt. Auburn Hospital. I greatly appreciate her insight and additional suggestions for my care. I put high value on her opinion.
- Reviewed on 11/2/2025
Very satisfied.
- Reviewed on 11/2/2025
This doctor is always accommodating , up my latest test results and able to answer all my questions . I feel fortunate to have her as part of my team
- Reviewed on 10/17/2025
Dr. Letourneau is thorough, professional, and most caring. I would recommend her to anyone who needed her expertise.
- Reviewed on 10/13/2025
My concerns were addressed during the appointment.
- Reviewed on 10/8/2025
Dr Letourneau is a wonderful provider - professional yet friendly. She speaks in a way that is easy to grasp what she is saying. And she is very knowledgeable and makes me feel known as an individual.
- Reviewed on 10/3/2025
Dr Letourneau is a very competent and compassionate doctor. I am very grateful to be her patient!
- Reviewed on 10/2/2025
Dr Letourneau is kind, caring and helpful. I'm grateful to be under her care.
- Reviewed on 9/6/2025
Dr. Letourneau is absolutely magnificent. It's been seeing her for two and a half years, almost three, and she's really done an amazing job for me. And I love going to see her.
- Reviewed on 8/8/2025
The doctor was very informative about my medical issues and spent sufficient time time listening to my concerns.
- Reviewed on 8/6/2025
All I can say, is that I am so lucky,having Her as my physician. As with all my MGH doctors and staff. My friends always say that drive to Boston is crazy, but every time I go, I return home ,I feel relieved.
- Reviewed on 8/4/2025
It is remarkable how well she built a rapport with me so quickly and how much information we were able to share during the appointment. It was like she made time dimensionally transcendental.
- Reviewed on 7/8/2025
Excellent visit! Provider was professional, efficient, considerate and Friendly
- Reviewed on 6/23/2025
Dr Letourneau has cared for me before several times. And on each occasion she has been very professional and thorough in her treatment and explanation of our situation.
- Reviewed on 6/11/2025
Dr. Letourneau is very, very attentive and very accommodating and very easy to understand. She's kind and compassionate. That's it.
- Reviewed on 6/8/2025
Dr. Letourneau is an exceptional doctor. She is thorough, professional, empathetic, and genuinely kind. Not only a great communicator, she listens, and remembers my concerns. I feel blessed to be in her care.
- Reviewed on 6/8/2025
Always feel more aware after visiting Dr Letourneau