
Highlights
Age Groups Seen
- Adults
- Geriatrics
Languages
- Greek
- English
Gender
MaleAbout William Vasilios Kastrinakis
Dr. William Kastrinakis is a General and Gastrointestinal surgeon. He is the Chief of General Surgery at Northshore Medical Center and the Surgical Director of the Mass General/Northshore Cancer Center. He specializes in minimally invasive surgery, colorectal surgery and general surgical oncology.
Dr. Kastrinakis grew up in Beverly, MA, and went to Tufts University and Tufts Medical School. He completed a General Surgery Residency at the Brigham and Woman’s Hospital. He served as the Assistant to the Surgeon in Chief at the Brigham after completing his surgical training and completed a Surgical Oncology Research Fellowship at the Deaconess Hospital. Dr. Kastrinakis has been on the surgical staff at the MGH since 2014.
Locations
- Massachusetts General Hospital
- 55 Fruit Street, Boston, MA 02114
- Get Directions
- phone: 617-726-2000
- Salem Hospital
- 81 Highland Avenue, Salem, MA 01970
- Get Directions
- phone: 978-741-1200
- Mass General Brigham Healthcare Center at Danvers
- 102 Endicott Street, Danvers, MA 01923
- Get Directions
- phone: 978-882-6100
Expertise
Education
- Residency: Brigham and Women's Hospital, General Surgery, 1997
- Fellowship: Beth Israel Deaconess Hospital, Surgical Oncology Research, 1994
- Residency: Georgetown University School of Medicine, General Surgery, 1992
- Internship: Georgetown University School of Medicine, General Surgery, 1991
- Medical Education: Tufts University School of Medicine, 1990
Board Certifications
- Surgery (General Surgery): American Board of Surgery, 1998
Insurance
- Aetna
- Beech Street
- Blue Cross Blue Shield
- Blue Cross Blue Shield - Indemnity
- 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 NH
- Medicaid RI
- Medicaid VT
- Medicare
- Medicare ACO
- 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
218 ratings, 83 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 1/29/2026
Great bedside minor. Explained procedues clearly even to the extent of contact with an oncologist after the surgery.
- Reviewed on 1/25/2026
Nice accessible office. Well structured and polite staff.
- Reviewed on 1/22/2026
I like dr. Kastrinakis a lot for his attention to his patient and his common sense
- Reviewed on 1/21/2026
excellent care fine experience
- Reviewed on 1/9/2026
Dr Kastinatis is a wonderful calming doctor. I feel comfortable with him.
- Reviewed on 1/5/2026
He was very keen on his profession, explained the situation, proceedure, and the recovery period, in great detail. Answered all of my questions with honesty and factually
- Reviewed on 1/1/2026
Took a few rescheduled appointments but when I did get to see the doctor it was a good experience and felt comfortable with the care plan set out for surgery.
- Reviewed on 12/30/2025
All ok
- Reviewed on 12/17/2025
This was my first appt with this doctor and I appreciated the time that was given to me for receiving the information that I requested regarding my diagnosis.
- Reviewed on 12/14/2025
Extremely professional and satisfying. VERY pleased with my introduction to Dr. K and what he is able to provide and what he expects from myself
- Reviewed on 12/7/2025
He was straight to the point! Explaining things concisely!! I have full confidence in him to do the hernia surgery!! He came highly recommended by Dr. [redacted] and Dr. [redacted]!!
- Reviewed on 11/30/2025
My mom felt very at ease with the doctor. He was very patient with her needs
- Reviewed on 11/16/2025
Dr Kastrinakis & staff were excellent. Dr K provided clear explanation of his recommended plan.
- Reviewed on 11/16/2025
Virtual call with MRI results. Doctor very professional and courteous. Friendly. Called on time with great news. Excellent service from office and staff. Very pleased..
- Reviewed on 11/15/2025
Dr K is courteous, professional, knowledgeable and is easy to talk to. I am glad I was referred to him.
- Reviewed on 11/8/2025
Calm, courteous, pleasant. Explain everything, showed pic
- Reviewed on 10/30/2025
Everything about my visit was performed in a professional manner
- Reviewed on 10/30/2025
Hi was excellent
- Reviewed on 10/29/2025
The doctor was kind and caring and completed my surgical procedure in a pain-free manner. I couldn't be more pleased
- Reviewed on 10/22/2025
The nurse was fabulous. She had a sense of humor, and a deep well of experience. This was a piece of cake for the surgeon, who completed the biopsy with timely speed and dexterity, and was also fully open and easy to communicate with.
- Reviewed on 10/21/2025
Thank you to Dr Kastrinakis and the medical staff. [redacted]
- Reviewed on 10/19/2025
Put my mind at ease, easy to talk to
- Reviewed on 10/21/2025
Timely appointment....professional and courteous staff
- Reviewed on 10/12/2025
Felt very confident with his results and how it was explained.
- Reviewed on 10/8/2025
I thought the doctor was very good and I'd recommend him except that I need to have surgery to repair a hernia and he's booking three months at least in the future, which doesn't help me too much. So that's my one reason for not recommending him to others.
- Reviewed on 10/3/2025
I felt very relaxed and comfortable sitting and talking with the doctor. He was very knowledgeable. I just felt very comfortable and he sounded like he knew what he was doing. I'm looking forward to working with the doctor.
- Reviewed on 9/28/2025
Surgeon: Efficient, caring, made me feel comfortable - he's very confident and skilled Assistant: amazing, went way above and beyond, could not have gone through it without her - so very grateful I'm not an easy patient - very dramatic - yet surgeon and his assistant handled me with respect, patience and ease.
- Reviewed on 9/26/2025
The surgeon was personable efficient and clear in his instructions for aftercare
- Reviewed on 9/22/2025
He was great.
- Reviewed on 9/19/2025
provider was very nice, very courteous, knew what he was talking about, and I'd recommend him highly. Thank you.
- Reviewed on 9/18/2025
Quick and efficient procedure performed.
- Reviewed on 9/14/2025
I'm thankful that he is available
- Reviewed on 9/10/2025
Hello, my name is [redacted]. I am [redacted]s' son. I am the one filling out this survey. And we were quite impressed with Dr. Kastrinakis. He took us in on a Friday afternoon at [redacted] o'clock and made time for us. And he rushed my mother in [redacted] to begin to get cleaned out for her colon. for our procedure this week. In any case, we were quite impressed. Thank you. Again, appreciate it.
- Reviewed on 9/3/2025
Great guy
- Reviewed on 9/4/2025
He was very attentive and explained things very well in layman's terms!
- Reviewed on 9/4/2025
He was pleasant and helpful with his explainations.
- Reviewed on 8/28/2025
The best
- Reviewed on 8/28/2025
Very good and thorough
- Reviewed on 8/27/2025
Very professional, knowledgeable & kind
- Reviewed on 8/27/2025
Great experience, nothing else to add.
- Reviewed on 8/26/2025
I did not have surgery. Dr Kastrinakis explained to me that he did not do surgery on ears. I said to his assistant why didn't the person who scheduled me tell me he did not do surgery on ears. She explained that the scheduler was not medical. Both his time and my time was wasted.
- Reviewed on 8/27/2025
He well versed in the problem that I had
- Reviewed on 8/21/2025
You have a Fantastic Staff
- Reviewed on 8/8/2025
He's a great care provider, but he should have known my medications and should have known that I couldn't have done the surgery that day. So he sent me home to get me off medications. He should have known that beforehand.
- Reviewed on 7/23/2025
Could not have been better
- Reviewed on 7/17/2025
The doctor and his nurses were very helpful and caring
- Reviewed on 7/16/2025
Very knowledgeable surgeon
- Reviewed on 7/16/2025
Overall it went very smoothly
- Reviewed on 7/14/2025
This care provider knows my history which was helpful for a future decision regarding an upcoming operation
- Reviewed on 7/12/2025
Dr. Kastrinakis is a great communicator and I feel very at ease with his recommended care routine.
- Reviewed on 7/9/2025
Dr Kastrinakis was very attentive to my concerns and questions. Spent adequate time with me for my exam. The nurse was very cordial and pleasant too. It was nice comfortable experience.
- Reviewed on 7/9/2025
Fast courteous sevice by all
- Reviewed on 7/6/2025
very professional
- Reviewed on 7/6/2025
I was impressed with Dr. Kastrinakas. He was knowledgeable and had obviously read my chart and background beforehand. He explained my options clearly.
- Reviewed on 7/2/2025
Very professional, excellent surgeon
- Reviewed on 7/2/2025
I always have a difficult time with the numbing process to remove basil cells, but he was so careful to numb the skin first. This was so helpful for me. I so appreciate it.
- Reviewed on 6/23/2025
Dr K was wonderful.
- Reviewed on 6/22/2025
Very satisfied with the encounter. Questions answered, concerns addressed, plan of action put in place. Very reassuring.
- Reviewed on 6/18/2025
I got a surgical consult very quickly
- Reviewed on 6/18/2025
Yes, the two times that I have seen Dr. William, he has been very professional with me, very attentive in what he was explaining, and explains things well. He addresses my concerns very well and is thorough. [redacted]
- Reviewed on 6/16/2025
Very pleased
- Reviewed on 6/13/2025
He was really great. I understood everything he said, and I would go to him again.
- Reviewed on 6/12/2025
The provider answered all my questions.
- Reviewed on 6/9/2025
Dr Kastrinakis was very thorough and explained all of the treatment options available to me. He provided data to support each treatment options available and worked closely with me in determining my preferred treatment option.
- Reviewed on 6/8/2025
This Dr is probably the best. However i don't believe he realizes the pain i have to deal with [redacted]
- Reviewed on 5/29/2025
Very pleasant experience. Doctor was kind, caring and extremely thorough.
- Reviewed on 5/25/2025
Dr was thoughtful and concerned.
- Reviewed on 5/25/2025
Excellent care
- Reviewed on 5/24/2025
Yes, I had a pleasant experience with Dr. Kastrinakis. He's always a true professional. Thank you for taking me on time.
- Reviewed on 5/22/2025
The surgery that I was suppose to have did not get done, The doctor explained that there was nothing for him to remove from my back. He explained what he should have seen and told me that thee was nothing there.
- Reviewed on 5/19/2025
The doctor made me feel very comfortable that he'll be able to reverse my colostomy bag. I'm more hopeful now than I was before I visited with him.
- Reviewed on 5/18/2025
Everyone was great. Fastest Dr. Appointment I've ever had. Very efficient.
- Reviewed on 5/20/2025
Direct, clear and matter of fact. All I needed to know!
- Reviewed on 5/14/2025
Made me feel confidential in the treatments he would provide
- Reviewed on 5/8/2025
Dr. Kastrinakis is very, very knowledgeable and talented and he's personable. I highly recommend him and the office staff, including the nurses and the office folks, are really great. It's a great practice, a great office.
- Reviewed on 5/7/2025
Experienced, confident, polite, friendly
- Reviewed on 5/1/2025
He is great.
- Reviewed on 5/1/2025
Dr Kastrinakis was great.
- Reviewed on 5/2/2025
Excellent
- Reviewed on 5/1/2025
Doctor was great
- Reviewed on 5/1/2025
Love the new purple heated gowns
- Reviewed on 4/16/2025
Very professional and knowledgeable about my particular problem, he had reviewed my history and imaging. Spend time discussing options, pros and cons of surgery. I felt very comfortable and confident making the decision to have surgery.
- Reviewed on 4/14/2025
As with all the staff at MGH North, the experience was terrific.