About Walter O'Donnell, MD

Departments, Centers, & Programs:

Clinical Interests:

Treats:

Locations

Mass General Pulmonary & Critical Care
55 Fruit St.
Boston, MA 02114
Phone: 617-726-1721

Medical Education

  • MD, Weill Cornell Medical College
  • Residency, Brigham and Women's Hospital
  • Fellowship, Brigham and Women's Hospital

American Board Certifications

  • Internal Medicine, American Board of Internal Medicine

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.

Reviews: Comments and Ratings

4.9out of 5(189 Ratings, 98 Comments)

March 2025

Dr. O'donnell, his PA [redacted] and the whole team are great to work with. They are personable and caring and have improved my quality of life immensely.


March 2025

I was a new patient by referral for Dr. O'Donnell who was thorough, spent a lot of time with me and connected me to tests in a timely fashion. He made me comfortable and confident of next steps.


March 2025

superlative clinician and compassionate and listening provider


March 2025

Dr.O'Donnell and those in his office provide outstanding care.


March 2025

fine, as always


March 2025

Super knowledgable and sensitive doctor! And he has followed my case carefully for years. Please keep him happy so that he doesn't retire for a long, long time!


March 2025

Dr. O'donnell was, as always, courteous, professional and welcomed my comments.


February 2025

Everything was amazing. Everyone was amazing. Everything was done in a timely manner and I seriously don't have any complaints at all. I was actually very surprised on how smooth everything was and how straightforward and clear everything was explained to me. And all the nurses and my doctor at the time listened and explained to me everything that ... Read More


February 2025

Dr. O'Donnell, [redacted] & [redacted] are an excellent team. They can't be beat.


February 2025

I have been a patient of Dr. O'donnell's for numerous years. The man is always thorough, spends as much time that the patient needs, answers any questions, asks if there's anything more he can do, and I would recommend him to anyone. I'm very, very pleased with him, and I hope he never retires. Thank you.

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