
Augustus Daniel Mazzocca, MD
Shoulder Orthopedic SurgeryShoulder and Elbow Orthopedic SurgeryOrthopedic Sports MedicineOrthopedic Surgery
Highlights
Age Groups Seen
- Adults
- Geriatrics
Languages
- English
Gender
MaleAbout Augustus Daniel Mazzocca
Dr. Augustus "Gus" Mazzocca is the newly appointed medical director of Mass General Brigham Sports Medicine and is also the chief of Mass General's Sports Medicine Service and the director of the Bioskills, Biomechanics and Cell Biology Laboratories within the Department of Orthopaedic Surgery at Massachusetts General Hospital. Alongside these posts, Dr. Mazzocca serves on the faculty of orthopaedic surgery at Harvard Medical School.
Dr. Mazzocca earned his Bachelor of Science degree in biology from Denison University, a Master of Science in applied physiology from Springfield College and his medical degree from the University of Connecticut School of Medicine. He completed an internship and residency with the Department of Orthopaedic Surgery at the University of Connecticut School of Medicine, as well as a fellowship in Sports, Shoulder and Elbow Surgery at Rush University in Chicago.
Dr. Mazzocca is an internationally renowned shoulder and elbow clinician specializing in complex joint injuries and conditions. Dr. Mazzocca comes to Mass General from the University of Connecticut Health Center, where he was director of the UCONN Health Musculoskeletal Institute and professor of orthopaedic surgery. As a professor, he was the Orthopaedic Teacher of the Year in 2013 and 2021. Dr. Mazzocca played an active mentor role in UCONN's Orthopaedic Residency program since 2002, serving at times as director and assistant director of the program. He has served on numerous masters and PhD committees and has mentored hundreds of fellows, residents and other graduate students over his long career. In his UCONN role, he also served as team physician for UCONN Athletics and orthopaedic director for the state of Connecticut's Department of Corrections.
Dr. Mazzocca has dedicated his non-clinical life to education, research and his family, which is most important to him. He is a member of the prestigious American Orthopaedic Society for Sports Medicine (AOSSM), American Shoulder and Elbow Surgeons Society (ASES), The International Society of Arthroscopy, Knee Surgery and Orthopedic Sports medicine (ISAKOS), as well as being a member of the European Society for Surgery of the Shoulder and Elbow (ESSSE). He and colleague Jon J.P. Warner, MD, co-founded the New England Shoulder and Elbow Society (NESES), which is a regional society dedicated to educating and researching problems related to the shoulder and elbow. He is the founder and was the director of the University of Connecticut Human Soft Tissue Research Laboratory, and he has published over 250 peer-reviewed journal articles.
Video
Locations
- Massachusetts General Orthopaedic Surgery Sports Medicine Service
- 52 Second Avenue, Blue Building, Suite 3300, Waltham, MA 02451
- Get Directions
- phone: 781-487-6064
- fax: 781-487-6826
- Massachusetts General Orthopaedic Surgery Clinic
- 20 Patriot Place, Foxborough, MA 02035
- Get Directions
- phone: 617-726-2784
- fax: 508-718-4036
Expertise
Education
- Fellowship: Rush University Medical Center, Sports Medicine, 2002
- Residency: University of Conn. Health Ctr., Orthopedic surgery, 2001
- Medical Education: University of Conn. Health Ctr., 1996
Board Certifications
- Orthopaedic Surgery: American Board of Orthopaedic Surgery, 2004
- Orthopaedic Sports Medicine: American Board of Orthopaedic Surgery, 2004
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 CT
- Medicaid NH
- Medicaid RI
- Medicare
- Medicare ACO
- Multiplan
- Senior Whole Health
- TriCare
- Tufts Health Plan
- Tufts Medicare Preferred
- United Health Care
- Wellpoint
- WellSense
Ratings & Reviews
4.9 out of 5
277 ratings, 126 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 2/7/2026
excellent
- Reviewed on 2/7/2026
Very efficient listen to my concerns and explained everything
- Reviewed on 2/6/2026
Dr Mazzocca is one of the best doctors I have seen in the past 20 years. He listened to my issues, explained what he saw on the X-rays, and carefully mapped out what he thought was the best plan for me. He quickly made referrals where he thought it was important. I would highly recommend Dr Mazzocca.
- Reviewed on 1/30/2026
The doctor was experienced, he was knowledgeable, and gave me complete confidence in his ability to forecast the situation and tell me what the best thing to do was.
- Reviewed on 1/28/2026
Dr Mazzocca was very kind and took time to ensure both my son and I were informed and comfortable with the plan. He out my son at ease right away with his energy and engaging personality.
- Reviewed on 1/28/2026
Dr. Mazzocca listened carefully to my concerns, explained my treatment options clearly and respectfully, and allowed me to feel confident in my decision to enlist in his care.
- Reviewed on 1/21/2026
This was my first visit with this doctor. I was satisfied with the appointment and the experience with the doctor, the administrative people and X-ray techs. I'm glad I booked my appointment here.
- Reviewed on 1/21/2026
He spoke to me very rationally about my options and allowed me to ask what I needed to make an informed choice about next steps.
- Reviewed on 1/20/2026
He was very professional and very easy to talk to. He did not rush the appointment and listened carefully to everything I had to say. He explained what he thought was going on with my shoulder and what the next steps would be. I can't say enough about the Waltham facility. There is never and issue with appts, staff or care. I wish all Mass Gen facilities were as well run as Waltham.
- Reviewed on 1/19/2026
As always, Doctor Mazzocca gave me good advice about my shoulder, discussing its current state and plans for surgery in the Fall. He also ordered an MRI and I have a followup meeting scheduled.
- Reviewed on 1/14/2026
The very best
- Reviewed on 1/14/2026
After my previous experience with MGH ortho surgical PA I was pleasantly surprised with the care I received.
- Reviewed on 1/12/2026
Dr. Gus is one of the best providers I have ever had for anything in my life and I'm [redacted] years old. He treats me like I'm the only patient he's ever had.
- Reviewed on 12/29/2025
He was on time, he listened, asked questions and explained everything very well. I much appreciate his welcoming me. I feel he actually was very caring to my issue and pain.
- Reviewed on 12/26/2025
Excellent, personalized care and directed to my needs and concerns. Outstanding
- Reviewed on 1/4/2026
Dr. Augustis Mazzocca introduced himself as Dr. Gus Mazzocca in a very comforting way, which immediately relaxed the nervousness I had meeting a new health provider for my ongoing issue. He was attentive in listening to my concerns and after reviewing my x-ray explained to me in a detailed manner what he observed and what would be the next course of action. I felt not rushed and empathy in his words and will follow his actions going forward. It was comforting in my belief I had made the correct choice for my shoulder issues.
- Reviewed on 12/22/2025
Always very timely and professional
- Reviewed on 12/20/2025
Excellent job my kind of people
- Reviewed on 12/12/2025
Thank you MGH.
- Reviewed on 12/11/2025
Always a pleasure and I appreciated the understanding and insight of the provider.
- Reviewed on 12/11/2025
Very at ease throughout
- Reviewed on 12/9/2025
Dr Mazzocca is Fantastic! He explains everything clearly & in detail. Open communication w/ me & my PT. Always greets me with a warm & welcoming spirit!
- Reviewed on 12/11/2025
He was wonderful. He explained everything to me. I recommend him highly. Thank you.
- Reviewed on 12/9/2025
Very easy to speak with. Dr Mazzocca explained my situation and provided a care plan to follow and when and if needed to follow up sooner
- Reviewed on 12/7/2025
Dr Mazzocca was extremely kind and concerned about my injury and explained the process of the surgery and recovery. I liked him very much and feel very comfortable with him taking care of me.
- Reviewed on 11/23/2025
One of the best experiences in a medical office I've had. Professional, on time and highly experienced.
- Reviewed on 11/22/2025
Very happy from beginning, great bedside manner, knew the operation well
- Reviewed on 11/20/2025
Dr Mazzocca is great
- Reviewed on 11/16/2025
I am so happy that I found Dr. Mazzocca. He listens carefully and is patient and kind. He is easy to talk to and I never feel rushed. He has helped me so much
- Reviewed on 11/15/2025
Great experience
- Reviewed on 11/12/2025
I am completely happy with my experience with Dr. Mazzocca. He listened carefully to all my concerns and took action on all of them.
- Reviewed on 11/12/2025
This was the first time that I met Dr. Mazzocca, he made me feel very comfortable right away. He listened to what I had to say, and I really felt I was in good hands with him.
- Reviewed on 11/12/2025
He was attentive and prepared for my appointment. This was a second opinion for a pending surgery. He was knowledgeable and spent ample time answering questions. Terrific!
- Reviewed on 11/10/2025
Initial visit, seems very knowledgeable and trustworthy.
- Reviewed on 11/6/2025
I throughly enjoyed my visit. Dr Mazzocca was kind, honest, knew my case before I entered and put forth a plan for my eventual surgery moving forward. I really appreciate the fact that he does not want to rush into surgery as my shoulder is still functioning at a high level.
- Reviewed on 11/5/2025
Doctor Mazzocca is always on time, thorough and explains things in an appropriate manner. I highly recommend him and have done so in the past.
- Reviewed on 11/5/2025
I wish all my past and present doctors were as wonderful as this Doctor. He made the visit easier even though I was in pain. His personality and knowledge made this the best experience in healthcare that I have had in a very long time.
- Reviewed on 10/30/2025
As always extreme professionalism and courtesy!!!
- Reviewed on 10/16/2025
Dr Mazzocca has an incredible bedside manner, which certainly makes a stressful situation less so. He listened carefully and took the time to fully understand my concerns. Provided a comprehensive game plan to address my medical issue.
- Reviewed on 10/14/2025
Dr. Mazzocca was very knowledgeable and knee exactly how to test my shoulder to determine the extent of my injury. He was very kind and explained everything as he did it.
- Reviewed on 10/17/2025
Dr. Mazzocca was very personable and knowledgeable.
- Reviewed on 10/17/2025
Best Dr's visit I've had in years.
- Reviewed on 10/14/2025
From the woman at the front desk to the doctor, everyone was delightful. I arrived early, and they were able to see me almost right away. This doctor was highly recommended to me and I can see why. I had to travel a bit to get to his location in Waltham, but it was well worth it.
- Reviewed on 10/11/2025
Dr Mazzocca was very professional and knowledgable.All information was given to me about the process of my care.Had a good comprehensive exam.
- Reviewed on 10/10/2025
I like the Dr. Matika very much, a very nice, very polite, very knowledgeable. My initial check-in, the girls were not very nice, but then the check-in on the side of the orthopedic side, those two girls were super nice and friendly. And the provider was excellent. And thank you. I wanted... Hi. Hi. Is that the green? Yeah. And I wanted to ask your manager, I wanted to ask if you have a.
- Reviewed on 10/9/2025
It was very clear from the beginning of the visit that Dr. Mazzocca listened to what I was saying, is very experienced in accurately diagnosing my injuries and in creating a plan to restore my shoulder/arm function as much as possible.
- Reviewed on 10/8/2025
Thank you
- Reviewed on 10/8/2025
Dr. Mazzocca is an excellent doctor and I highly recommend him to anyone needing orthopedic surgery!
- Reviewed on 10/6/2025
Dr. Mazzocca spent the necessary time with me to understand the location of my pain and explained what I should do to follow up.
- Reviewed on 10/6/2025
Wonderful
- Reviewed on 9/29/2025
Very comforting, friendly and an extremely competent physician!
- Reviewed on 9/25/2025
1 year ago I had a massive rotator cuff repair done by Dr. Mazzocca and his team. I was extremely satisfied with all my appointments leading up to this surgery and the surgery itself. Dr. Mazzocca is a talented surgeon and I have recommended him to many people already.
- Reviewed on 9/25/2025
Dr. Mazzocca is a great doctor who is supported by a great staff. I would recommend Dr. Mazzocca to anyone needing orthopedic surgery. Regards, [redacted]
- Reviewed on 9/24/2025
Was very pleased with my appointment. The doctor explained everything to me in a timely and professional manner.
- Reviewed on 9/24/2025
Great and incredibly efficient service
- Reviewed on 9/19/2025
First of all, one of the questions about the nurse, I said, I hit one, which was never, and I meant to hit four. But as far as Dr. Mazzocca goes, he's a wonderful guy. He explains things, he takes time, he's wonderful, and I really like him.
- Reviewed on 9/19/2025
I'm so happy I got to see Dr. Mazzocca. He is absolutely amazing, I feel so grateful to have him as my Doctor!
- Reviewed on 9/11/2025
Very pleased w/ Dr. Took the time to explain results, options, allowed for my participation re: treatments options. Would highly recommend!
- Reviewed on 9/11/2025
When he did dictation I could tell he had listened to me as he repeated my concerns in his dictation. He was friendly and courteous while being very professional and knowledgeable.
- Reviewed on 9/10/2025
Dr. Mazzocca is great. Very kind, knowledgable, and a good listener.
- Reviewed on 9/8/2025
Professional and very helpful with my condition. Marvelous!
- Reviewed on 9/8/2025
Dr. Mazzocca was very thorough, explaining everything I needed to understand, recording my issues and physical status, advising on best approach going forward. I truly appreciate his advice.
- Reviewed on 9/8/2025
I liked how he showed me the imaging and explained where the problem is and detailed the solution would work. I felt confident I understood what was going on.
- Reviewed on 9/6/2025
Everything was excellent.
- Reviewed on 9/1/2025
As a doctor was very thorough and knowledgeable about my condition. I thought he was terrific.
- Reviewed on 8/31/2025
Made me feel quite comfortable from start to finish with him. Very good first impression and extremely knowledgeable and forthcoming about discussing treatment options.
- Reviewed on 8/25/2025
Best doctor I've ever had
- Reviewed on 8/25/2025
Knowledgeable and personable
- Reviewed on 8/24/2025
Dr. Mazzocca explained to me the nature and severity of my injury, did thorough testing on the condition of my injured arm and provided clear instructions of how to care for it, recommended and ordered treatment options, as well as follow-up plans.
- Reviewed on 8/22/2025
Top notch, DR. Mazzocca and staff were very kind and professional before and after my surgery, I would highly recommend DR. Mazzocca to friends and family. Plus and most important DR. Mazzocca fixed my shoulder .
- Reviewed on 8/20/2025
Very caring and respectful
- Reviewed on 8/30/2025
Excellent
- Reviewed on 8/20/2025
I really appreciated that this provider was so respectful and listened to my concerns and addressed them appropriately.
- Reviewed on 8/15/2025
This doctor was such a blessing. He was open, honest, very educated, listened intently, was respectful and kind-hearted. My case is complicated, yet he afforded me the time to hear about my complicated health history and made recommendations. He honored my asking him to help coordinate my complex post surgical problems. I am so proud and blessed to have had an appointment with him, and his staff, all whom were very attentive and respectful. I look forward to turning to him and his staff to help make my daily life better. And I appreciate tthe way I was treated and respected.
- Reviewed on 8/14/2025
Dr Mazzocca is a brilliant , caring, professional doctor. It is always a pleasure to see him. He is a very warm and friendly man
- Reviewed on 8/11/2025
Very professional and personable.
- Reviewed on 8/11/2025
He was professional, very knowledgeable and kind. Excellent communicator and encourage my questions and concerns.
- Reviewed on 8/10/2025
The doctor was FANTASTIC. He was respectful. He listened to my concerns and explained fully the results of my MRI and the impact it has on the trest of my body and abilty to function at my best.
- Reviewed on 8/6/2025
Mass General Hospital is a professional operation where caring is above all. One thing that really stands out is the support staff and how happy they are in their job . The surgeon explained the upcoming procedure in a manner that was very easy to understand
- Reviewed on 8/5/2025
He was very pleasant and friendly. He listened to my concerns and addressed them completely.
- Reviewed on 8/6/2025
Fast and great
- Reviewed on 8/6/2025
This visit was two years post-op shoulder surgery, from which a very successful outcome. Cannot say enough positive feedback about Dr. Mazzocca and his team. The surgery result and subsequent PT were perfect solution to my pain and mobility restriction. Would recommend him in an instant to anyone in pain or unable to enjoy moderate exercise.
- Reviewed on 8/4/2025
Excellent.
- Reviewed on 8/4/2025
excellent care was provided
- Reviewed on 8/2/2025
I am extremely fortunate to have been seen by Dr. Mazzocca. He was very methodical and thorough in his medical assessment and diagnosis. He provided me with clear, concise, and easy to follow information on what he found and what treatment he was recommending. He is not only a leading expert in his field of medicine, he's also very down to earth and approachable. Also, Dr. Mazzocca has a great team supporting him. Everyone was professional, considerate, and efficient.
- Reviewed on 7/31/2025
There's nothing but greatness that I can say for Dr. Augustus Mazzocca. He was absolutely fabulous. He took me in immediately. He looked at my problem immediately. He resolved all the issues that I could do immediately. I had exams done, x-rays and MRIs almost instantaneously. He's a fabulous, fabulous surgeon. I recommend him highly to anyone. you as Mass General are lucky to have him as a physician.
- Reviewed on 7/28/2025
Dr Mazzocca was personable and incredibly thorough about my health issue. He gave me immediate feedback about the nature of my problem and its remedies. His explanations were easy to understand and complete. The visit was extremely productive.
- Reviewed on 7/26/2025
The doctor was extremely professional, knowledgeable, and took the time to discuss with me the condition of my shoulder as well as my options. I had a very positive experience.
- Reviewed on 7/26/2025
Wonderful experience with both the DR and RN :)
- Reviewed on 7/21/2025
I am a MGB patient, however, new to this practice. When I called for an appointment, I was in a great deal of pain, and the Admin I spoke with saw my need and made room on Dr. Mazzocca's busy schedule later the same day. Dr. Mazzocca made me feel comfortable and important, and listened to my symptoms in an empathetic manner. He was able to make a diagnosis and order an MRI and follow up in a couple of weeks. I feel very fortunate, once again, to receive incredible care at MGB.
- Reviewed on 7/21/2025
My name is [redacted]. I just wanted to say that having any health care is a blessing, but to have Dr. Gus, that is something immeasurable, period. He's a great surgeon, a great doctor. He listens to my concerns. And I would recommend him to the Lord Jesus Christ himself. Period.
- Reviewed on 7/20/2025
Great team, providing exceptional care, thanks for everything!
- Reviewed on 7/9/2025
Dr. Mazzocca showed care for my concerns and explained options and suggestions clearly. We made a decision together on the best treatment plan, along with a plan to check in later this year with possibilities for an mri or X-rays based on how I feel then. Would highly recommend!
- Reviewed on 7/7/2025
Good listener, informative, caring, receptive to my issue.
- Reviewed on 7/6/2025
Received excellent care
- Reviewed on 7/3/2025
He is professional yet takes a personal interest in my situation and care. I have shared his name and my experience with his care.
- Reviewed on 7/2/2025
I am grateful to Dr Mazzocca for an excellent visit. His years of excellence as an internationally renowned shoulder surgeon gave me assurance that my diagnosis and treatment was on the best course.
- Reviewed on 7/2/2025
Dr. Mazzocca is well versed in his specialty. A great bedside manner, and listens well.
- Reviewed on 7/2/2025
Absolutely loved this doctor. I hate to say it, because it will only be harder to get appointments. He was already in the room when they brought me to it, and he had already updated himself with my records. Very loving and caring man!!! Extremely knowledgeable. I wish all my doctors were just like Dr. Mazzocca. Definitely a 10.
- Reviewed on 6/30/2025
Dr Mazzocca is compassionate, listened to everything i said, answered all my questions, and was extremely efficient at the same time! I was lucky to get an appointment with him!
- Reviewed on 6/29/2025
Quick and easy. Great doc.
- Reviewed on 6/28/2025
He was very direct and did his best to answer all my questions. He is very knowledgeable in his field of expertise.
- Reviewed on 6/26/2025
I loved this office visit. From the first I walked in to everyone I met, everyone I talked with, they were very friendly. The doctor was very friendly and I would recommend him and all this office to everyone.
- Reviewed on 6/26/2025
Dr Mazzocca is extremely knowledgeable and personable. It is always a pleasure to meet with him.
- Reviewed on 6/23/2025
Excellent Doctor and I will recommend him to everyone!!
- Reviewed on 6/23/2025
Dr Mazzocca determined the best treatment plan so I could maintain my mobility and my passion
- Reviewed on 6/12/2025
This was my first visit with Dr.Mazzocca
- Reviewed on 6/11/2025
The process of dictation during my exam was a little off-putting. I understand the need for efficiency, but it was distracting.
- Reviewed on 6/11/2025
This was the first time that I had met with Dr. Mazzocca. I was impressed with his laser focus on the history of my issue, the areas of my concern and his thoughts about what additional information he will need to complete his diagnosis. Very personable and comforting. I am most impressed.
- Reviewed on 6/12/2025
I am having surgery and the Doctor explained everything to me which made me feel good.
- Reviewed on 6/11/2025
Great experience
- Reviewed on 6/11/2025
Dr Mazzocca is the greatest! At my age, my chance of having a successful rotator cuff surgery is relatively low when one looks at the statistics. But with Dr. Mazzocca, I had a perfect recovery and my shoulder is as good as new! Maybe better! Plus, he's easy to talk to and really listens.
- Reviewed on 6/6/2025
Dr. Mazzocca is probably one of the best providers I've ever had. You can tell he truly loves what he does and you can tell he truly cares about his patients. I've dealt with a lot of providers in the past and honestly, Dr. Mazzocca is probably the best one I've ever had. You know, very good bedside manner, just overall just an amazing person. .
- Reviewed on 5/29/2025
The provider was extremely attentive, thorough and thoughtful in their approach to my condition.
- Reviewed on 5/21/2025
The staff and doctors were very helpful. They knew my situation. The doctor was very insightful into my condition. Best shoulder doctor I've seen and I've seen four others.
- Reviewed on 5/21/2025
Very professional and extremely knowlegable.
- Reviewed on 5/21/2025
Dr. Mazzocca is very kind and respectful. He asked how my shoulder was feeling and listened to me as I told him what I had been doing for PT and how it was working.
- Reviewed on 5/14/2025
My experience with this provider has been exceptional. The staff at the front of house and back are very courteous and helpful. The nurse was very helpful in answering my questions as well as professional in all aspects of my visit. My provider has the best office manager at this facility and other locations. Very detailed in helping you schedule your appointment. My provider is the best of the best. He reviews in detail your medical record before your exam. He allows questions to help facilitate a positive plan for your well being and a plan to help you on your road to recovery so you can get back to a healthier you! I am so grateful to have him as my provider.
- Reviewed on 5/11/2025
knowledgeable, respectful, and caring.
- Reviewed on 5/7/2025
Dr M provided personalized and professional care and concerns during my visit. He had previewed my history and my X-rays and ER visit so was well aware of my problem. He included me in all aspects of my visit
- Reviewed on 5/3/2025
Doctor Mazzocca is so good, he listens to my concerns and helps me understand risks and benefits of shoulder treatments. I appreciate his informed advice as well as his personable approach to me as a patient.
- Reviewed on 4/24/2025
Dr Mazzocca is the best!
- Reviewed on 4/22/2025
Outstanding provider.
- Reviewed on 4/14/2025
Dr Mazzocca did a great job with surgery on my shoulder. Everything turned out perfectly. Thank you!
- Reviewed on 4/14/2025
Great Doctor... period
- Reviewed on 4/14/2025
We were very impressed with the doctor. He's obviously a brilliant physician, and he's highly recommended, and loved him.