G Rees Cosgrove, MD

G Rees Cosgrove, MD

Not currently accepting new patients

4.889583 average rating from 192 patient reviews

Specialties

Affiliation

Mass General Brigham

Provider Locations

  • Boston, MA

Dr. Rees Cosgrove is an internationally acclaimed expert in stereotactic and functional neurosurgery with over 35 years of experience in the field. He specializes in the surgical treatment of epilepsy and has performed over 1400 operations for patients with intractable seizures. Dr Cosgrove also specializes in the surgical treatment of Parkinson’s disease, tremor, dystonia and other movement disorders. He has performed over 500 operations in patients with intractable movement disorders including thalamotomy, pallidotomy, deep brain stimulation and other neuromodulation procedures. Dr. Cosgrove was an early adopter of MRgFUS, and he has performed nearly 600 MRgFUS procedures and has been involved in many of the early clinical trials.He is a past President of the American Society of Functional and Stereotactic Neurosurgery and is an Executive member of the World Society of Functional and Stereotactic Neurosurgery. He is currently the Director ofFunctional Neurosurgery at the Brigham and the Neurosurgery Residency Program Director.

Education & Training

  • Residency: Montreal Neurological Institute, Mcgill University, Neurosurgery, 1986
  • Internship: Royal Victoria Hospital, Surgery, 1981
  • Medical Education: Queens University School of Medicine, 1980

Board Certifications

  • Neurological Surgery, American Board of Neurological Surgery

Languages Spoken

  • French
  • English

Age Group Treated

  • Adults

Patient Feedback

4.889583 average rating from 192 reviews

  • Very friendly and knowledgeable

    2026-07-07

  • He's very, very knowledgeable. He's an excellent surgeon and I wouldn't go to anybody else.

    2026-07-03

  • It was wonderful.

    2026-06-24

  • Dr. Cosgrove is an example of how all doctors should be. I could list each of his attributes but that would take too long. I have been to many doctors over the past 30+ years and he is, without a doubt, one of the top two. I had lost my trust in the medical profession and he is like a breath of fresh air. I would trust him to do my brain surgery. I was very leery of dealing with another neurosurgeon because usually their ego is so large it's hard to communicate with them. Dr. Cosgrove put me at ease within two minutes. When he told me that he couldn't help me I believe he was genuinely sorry. Above all, I appreciated his honesty and empathy. He even took the time to explain other options for my condition that were not in his purview. Thank heavens there are doctors like him.

    2026-06-23

  • The provider gave us information that we hadn't previously had. He was very straightforward. Asked questions was very personable and made me feel as if I could do this.

    2026-06-16

  • Dr Cosgrove's gave me the confidence and hope I needed to go on with my condition.

    2026-06-16

  • Dr. Cosgrove was wonderful! He explained the procedure that I was considering in terms that were completely clear, listened as I expressed my judgement about whether it was appropriate for me. He had reached the same conclusion but rather than tell me gave me the chance to get there myself. He- and his nurse [redacted]-were lovely, made me feel so comfortable in a situation that I had approached with a lot of apprehension.

    2026-06-16

  • He was very informative in the procedure which I was scheduled to have and easy to talk to,

    2026-06-15

  • Dr Cosgrove was familiar with my husbands case when we started the appointment. He explained the pros and cons of treatment and explained his recommendations. He allowed us to ask questions and gave us time to think about our decision. He provided an excellent professional consultation.

    2026-06-15

  • He is excellent and one of best skilled surgeons and has changed my life forever!

    2026-06-11

  • Super, super, super excellent. The Gotol is very good, very good.

    2026-06-03

  • everything was very professional and helpful

    2026-05-28

  • Yes, I have to say with Dr. Cosgrove and his secretary there, they're just absolutely phenomenal. She was so great and everything. And with him, from when I first met him and then got to know him, his personality, for what I went through, it was absolutely life-changing for me. I mean, I was going through years and years. There's just so much I couldn't do anymore in life. It was like ending, it was miserable. And with him, with how he went through it and talking with him, that's just as beautiful because he's right from the heart. And him being able to do it makes him as happy as I was receiving it. So it was so great to get to know him as a person. And know ?

    2026-05-28

  • Dr. Cosgrove and his team are the most professional and knowledgeable people in their field and I received the best care possible.

    2026-05-25

  • Dr. cosgrove was very informative and explained everything.

    2026-05-20

  • Excellent with information, knowledge on the subject and performance. The doctor is great.

    2026-05-20

  • It was pleasant and informative.;

    2026-05-19

  • I feel confident that my upcoming treatment will be handled professionally and with great care

    2026-05-18

  • Dr. Cosgrove has a very good bedside manner and makes you feel at ease when discussing complicated topics.

    2026-05-14

  • My overall experience was a good one

    2026-05-04

  • I saw three people and all were excellent: [redacted], the PA? nurse? Rees, the surgeon [redacted], the experiment implementer

    2026-05-04

  • Dr. Cosgrove is a specialist and explained the procedure in words I could understand.

    2026-05-06

  • Very nice doctor. Explained possible treatment thoroughly.

    2026-04-29

  • The doctor was very nice and he explained everything to me and I was very happy with him and I would see him as many times as I have to. Thank you.

    2026-04-24

  • I felt cared for

    2026-04-24

  • The provider has considerable expertise and experience in the procedure that I was interested in and similar procedures.

    2026-04-23

  • Helpful,, positive, thoughtful

    2026-04-21

  • Excellent

    2026-04-19

  • Dr. Cosgrove listens. I did not feel ignored.

    2026-04-17

  • Excellent ! Thank you

    2026-04-13

  • Everyone was excellent!

    2026-04-12

  • It was the first time a doctor since my stroke in 2021 explained to me my issues & recovery.

    2026-04-08

  • Dr. Cosgrove is AMAZING. He made me feel comfortable right away, explained procedure options completely, answered our question and suggested the best treatment option for me. The NP that i saw before him was knowledgeable, asked me about my medical history and treated us with respect. She then conveyed the information to Dr Cosgrove when he came in. I am very happy to have him and his team providing my care!!

    2026-04-02

  • [redacted] I felt the exchange went very well and evaluated the situation in a way I could feel confident about. [redacted]

    2026-04-01

  • Everything went as expected.

    2026-03-30

  • My husband's experience could not have been better. From the nurse practitioner he saw in the morning to even beginning before that with the receptionist to the PA, [redacted], I think was her last name and the neurosurgeon, Dr. Cosgrove, was just so good at explaining things and warm and a great listener. Dr. [redacted] later on and Dr. [redacted] and the two residents he also met with in the neuropsy department were also just excellent and everybody gave him their undivided attention and it felt really thorough and it was a challenging day.

    2026-03-30

  • Dr Cosgrove is off the chart amazing and caring

    2026-03-26

  • Dr Cosgrove was very helpful and professional.

    2026-03-25

  • Dr Cosgrove is a caring, empathic physician. He offered me the gift of healing. He explained each step of the Guided Ultrasound Surgery that put me at ease throughout the entire process.

    2026-03-23

  • I was pleased with the amount of time spent explaining and answering questions. [redacted]

    2026-03-18

  • I was at ease as soon as he walked in! He has a very calming demeanor. Extremely fortunate to have him do my procedure.

    2026-03-16

  • Exceptional!

    2026-03-12

  • Keep up the good work and the great friendly approach to to clients

    2026-03-11

  • Very competent with a very helpful disposition.

    2026-03-10

  • The most phenomenal team that I have ever encountered.

    2026-03-05

  • The experience with Dr. Cosgrove was excellent. He explained everything that I needed to know. Well.

    2026-03-05

  • Dr. Cosgrove was very thorough. He was a good listener and he was great at informing me all about the procedure.

    2026-02-27

  • Very personable and easy to talk with. I felt "seen" and understood. Appreciated his professional, but thorough review of my history and current condition and will hopefully be qualified to continue toward the procedure we discussed.

    2026-02-25

  • He was on time with his he call and answered all questions.

    2026-02-25

  • Outstanding

    2026-02-23

  • I had a wonderful experience with Dr. Cosgrove. He's a fine physician and he understood my situation and helped me. Thank you very much.

    2026-02-19

  • He was knowledgeable, easy going. Laughed from time to time.

    2026-02-16

  • Respectful, knowledgeable, understanding

    2026-02-13

  • Excellent communicator for treatment discussion

    2026-02-11

  • He is very caring, Professional, and listened carefully and came up with a solution for me. He is an Awesome Surgeon.

    2026-02-03

  • He has always been open and honest about his opinion

    2026-01-27

  • Everybody was very professional and polite which I found very refreshing

    2026-01-27

  • I was very pleased with the nurse and doctor. They were very knowledgeable, confident, patient and made me feel comfortable.

    2026-01-26

  • Excellent demeanor.

    2026-01-26

  • I arrived 30 min. late for the appointment and was fitted in, graciously and seamlessly.

    2026-01-25

  • He is a very nice man that means well.

    2026-01-21

  • He was pleasant, easy to talk to and explained his recommendation for surgery in a manner that was understandable. Appeared relaxed and confident

    2026-01-20

  • Very thorough

    2026-01-19

  • Doctor Cosgrove explained things so that I was able to understand what he was talking about. He was very patient and very good at explaining the procedures to myself and my daughter. I felt very comfortable with him and very much appreciate him not speaking over my head. I definitely feel comfortable with Doctor Cosgrove performing this procedure.

    2026-01-15

  • just a great doc - explained everything!!!

    2026-01-14

  • Top professionalism

    2026-01-14

  • Dr Cosgrove explained everything clearly and I am extremely pleased with his skill and care.

    2025-12-18

  • The visit was done with professionalism, respect and caring people.

    2025-12-15

  • Dr Cosgrove was welcoming and listened to my concerns. He explained and showed me images taken several years ago and options for the future. I left there feeling very positive about my care.

    2025-12-11

  • Positive response to my needs.

    2025-12-11

  • Great, he told me everything I ecpected

    2025-12-11

  • Dr. Cosgrove was informative, extremely knowledgeable, succinct, had an amazing bedside manner, and was efficient.

    2025-12-11

  • Dr.Cosgrove was as easy to talk with as a lifetime friend, and was very quick to pick up on the severity of my symptoms.

    2025-11-29

  • My Care by everyone involved was exceptional

    2025-11-26

  • My experience is this: when you interact with people at the top of the scale, you get the best possible treatment. Even though Dr. Cosgrove is so much at the top, he spent careful, sensitive, intelligent time with me, and explained things about my brain that no one has before. I feel so fortunate to have seen him.

    2025-11-25

  • Dr cosgrove is smart, talented, and easy to talk to. I have recommended him to several relatives and friends who suffer from tremors.

    2025-11-22

  • OUTSTANDING !! Very educated and informative!

    2025-11-17

  • Dr Cosgrove is patient and caring. I feel confident I'm getting great care.

    2025-11-17

  • Impressed

    2025-11-12

  • Dr. Cosgrove is caring and empathetic. Fabulous communication skills! And, obviously, very talented and smart. I like him a lot.

    2025-10-23

  • He was very informative, and he gave me good advice about when I might be ready for neurosurgery and also about asking my regular neurosurgeon about trying another medication to help with essential tremor.

    2025-10-20

  • Courteous professional, explained everything very clearly.

    2025-10-19

  • This care provider is the most knowledgeable, caring, down to earth, and wonderful neurosurgeon a person could have.

    2025-10-19

  • I got all I could've expected and more from Dr Cosgrove at this consultation appointment.

    2025-10-14

  • This provider was very knowledgeable and thorough in the way he presented my situation and explained the procedure to be done.

    2025-09-18

  • Dr Cosgrove was professional and easy to talk to. Listens to my input.

    2025-09-17

  • He continues to be conservative in his approach, and an appreciated source of help and advice to me as I navigate through a complicated diagnosis.

    2025-09-16

  • Dr. Cosgrove was fantastic , caring and thorough , explaining very well how to proceed with my treatment

    2025-09-12

  • Dr Cosgrove was very compassionate and took the time to listen to my concerns and explained my condition in a way I could clearly understand.

    2025-09-13

  • Satisfied with service and answers to my questions.

    2025-09-09

  • Competent , caring, and kind....

    2025-09-08

  • Highly professional, but easy to talk to

    2025-09-05

  • They were very informative

    2025-09-04

  • He was very respectful, very informative, and explained everything thoroughly to me. I would highly recommend Dr. Cosgrove to any and all people who have my situation. How the hell do I stop this?

    2025-09-01

  • Dr Cosgrove is perfect. Warm, knowledgeable and very professional!!

    2025-08-28

  • He seemed very knowledgeable.

    2025-08-24

  • Both Doctors were very professional but easy to talk to.

    2025-08-20

  • He was very helpful in explaining the process needed to help me. Very pleased.

    2025-08-19

  • He is easy to talk and friendly

    2025-08-24

  • Good communicator - explained thoroughly. Put me at ease.

    2025-08-22

Accepted Insurance

  • Tufts Medicare Preferred
  • Medicaid VT
  • Wellpoint
  • Mass General Brigham Health Plan
  • Medicaid CT
  • Beech Street
  • Coventry
  • Senior Whole Health
  • Blue Cross Blue Shield
  • Cigna
  • WellSense
  • Railroad Medicare
  • TriCare
  • Medicaid NH
  • Aetna
  • Multiplan
  • Fallon Health
  • Medicaid RI
  • Medicare
  • Medicaid ME
  • Harvard Pilgrim Health Care
  • Blue Cross Blue Shield Medicare
  • Humana
  • Tufts Health Plan
  • MassHealth
  • United Health Care
  • Commonwealth Care Alliance