
Highlights
Age Groups Seen
- Adults
- Geriatrics
Languages
- Spanish
- English
Gender
MaleLocations
- Mass General Brigham Cancer Institute Gillette Center for Gynecology Oncology at Boston
- 32 Fruit Street, Yawkey Building, 9th Floor, Suite 9e, Boston, MA 02114
- Get Directions
- phone: 617-724-4800
- fax: 617-724-1949
Expertise
Education
- Fellowship: Dana Farber Cancer Institute*, Hematology & Oncology, 2011
- Residency: UC San Francisco, Internal Medicine, 2008
- Medical Education: UC San Francisco School of Medicine, 2005
Board Certifications
- Medical Oncology: American Board of Internal Medicine, 2012
Insurance
- Aetna
- AmeriHealth Caritas New Hampshire
- Beech Street
- Blue Cross Blue Shield
- Blue Cross Blue Shield - Federal
- Blue Cross Blue Shield - Indemnity
- Blue Cross Blue Shield ME
- Blue Cross Blue Shield Medicare
- Blue Cross Blue Shield NH
- Cigna
- Commonwealth Care Alliance
- Community Health Options
- CorVel Workers Comp
- Coventry
- Fallon Health
- Harvard Pilgrim Health Care
- Humana
- Maine Community Health Options
- Martin's Point
- Mass General Brigham Health Plan
- MassHealth
- Medicaid ME
- Medicaid NH
- Medicaid RI
- Medicaid VT
- Medical Network
- Medicare
- Medicare - NH
- Medicare ACO
- Multiplan
- Multiplan/PHCS
- NH Healthy Families
- Railroad Medicare
- Senior Whole Health
- TriCare
- Tricare/ HealthNet Federal Services
- Tufts Health Plan
- Tufts Medicare Preferred
- United Health Care
- Wellpoint
- WellSense
- WellSense NH
Ratings & Reviews
5 out of 5
45 ratings, 19 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 5/23/2026
Dr Castro is a caring well informed doctor. Without his involvement in my care I don't think I would be alive. His knowledge and compassion is without fault
- Reviewed on 5/20/2026
Hello, I am impressed by the promptness with which I am received; appointment times are respected and nursing care is administered immediately, just before the doctor arrives. This aspect of the care is reassuring for the patient because they know there is a team that is ensuring their pain is at least alleviated and that they recover their health. Thank you all and best of luck.
- Reviewed on 5/10/2026
Dr Castro always enters the room with a smile. He has such a positive energy about him. He explains my results from the blood work in a way that I can understand. He is kind, compassionate, and thorough.
- Reviewed on 3/23/2026
Dr. Castro displayed the utmost in courtesy And tact.
- Reviewed on 3/22/2026
He is a Wonderful Doctor. He takes plenty of time with me and he is a Wonderful Doctor as he has been my Doctor for at least ten years.
- Reviewed on 3/1/2026
Thank you, Dr. Castro.
- Reviewed on 2/24/2026
Dr. Castro was extremely thorough in review of my medical records prior to our meeting and provided critical information related to care options. Came away from our meeting learning new things about treatment and feeling very confident in my decisions on next steps.
- Reviewed on 2/8/2026
Wonderful doctor and very happy to with Everything at MGH. I am so happy to be in Dr Castro care.
- Reviewed on 1/12/2026
Dr. Cesar is compassionate, knowledgeable and to the point. i cannot believe how much time he spent with me answering all questions me, my son and his fiance asked. Thank you for your care.
- Reviewed on 1/1/2026
This was the first appointment for me and Dr. Castro was extremely knowledgeable and very helpful and explained everything in a way that had not been explained to me before and I'm grateful for that.
- Reviewed on 11/12/2025
As this was a second opinion appointment I thought the Dr Castro was informed. I thought the conversation was helpful.
- Reviewed on 10/29/2025
Very professional, wonderful, gave me great hope, which I haven't gotten from too many doctors lately. It was a great experience. Thank you.
- Reviewed on 10/4/2025
I have a great team of providers
- Reviewed on 9/21/2025
Excellent Experience
- Reviewed on 9/14/2025
Excelente
- Reviewed on 9/14/2025
Dr. Castro provided excellent care and feedback about my condition. I would recommend him highly.
- Reviewed on 9/9/2025
Always very professional and caring.
- Reviewed on 9/7/2025
Dr Castro made everything incredibly easy to digest, was passionate and compassionate, and I left feeling extremely uplifted. The work he is doing and the way he interacts with his patients is second to none. I feel incredibly fortunate to have gotten time with him.
- Reviewed on 8/25/2025
Wonderful