Daniel C. Mascarenhas, MD

– Surgical Coordinator: Nicole
Phone: (617) 586-1911
Message on our Patient Portal

– Medical Assistant: Keeley
Phone: (617) 586-1909
Message on our Patient Portal

Dr. Mascarenhas is a board-certified orthopedic surgeon specializing in adult reconstruction. His clinical interests include hip and knee pain. He has specialized training in primary hip and knee replacements, partial knee replacements, and revision hip and knee replacements, using conventional, computer-assisted, and robotic techniques. He is skilled in anterior and posterior hip approaches and customizes the approach for each patient to provide the best recovery. Dr. Mascarenhas is focused on rapid recovery, short-stay, and outpatient total joint arthroplasty.

While attending medical school at the University of Maryland, Dr. Mascarenhas received numerous awards and honors, culminating in the Dean’s Award for Excellence in Clinical and Applied Research for exceptional clinical research performance. After graduating, Dr. Mascarenhas then completed his orthopedic residency at Rutgers Robert Wood Johnson Medical School in New Jersey, where he was recognized as Resident of the Year by his peers and faculty during his chief year in 2023. He has since earned a prestigious fellowship in adult reconstruction from the University of Texas, one of the largest and most prolific health systems in the country.

Dr. Mascarenhas is originally from Moorestown, NJ, and started volunteering as an EMT while he was still in high school. He continued to serve his community in this role while attending Rutgers University. Passionate about community involvement and charitable work, Dr. Mascarenhas has served as a leader, mentor, missionary, and volunteer throughout his career. Dr. Mascarenhas supports and contributes to Faith in Practice, a non-profit Christian organization that provides medical, dental, and surgical care to Guatemala. Outside of work, he enjoys spending time with his fiancée, cooking, reading, hiking, fishing, and traveling.

– Hip Conditions, including anterior and posterior hip replacement and revision hip replacement.
– Knee Conditions, including partial knee replacement, total knee replacement, and revision knee replacement.

Licensure and Certification

Board Certified, American Board of Orthopedic Surgery

Physician License, Massachusetts Board of Registration in Medicine

Professional Societies

American Association of Hip and Knee Surgeons

American Association of Orthopaedic Surgeons

Education

2018 MD, University of Maryland School of Medicine, MD

2013 BS, Biotechnology and Nutritional Sciences, Rutgers University, NJ

Post Doctoral Training

2023-2024 Adult Reconstruction Fellow, University of Texas, Houston, TX

2018-2023 Orthopaedic Resident, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ

Brzezinski, A., Mascarenhas, D., Simon, M., Kayiaros, S. A unique complication of femoral broach fracture and incarceration during total hip arthroplasty. Arthroplast Today. 2021;11:49-53.

Green, A.H., Forlizzi, J.M., Boyle, J., Castillo, W.J., Mascarenhas, D., Yao, M., Kiss, G., Sagebien, C.A. Estimating the nosocomial transmission rate of COVID-19 in orthopaedic surgery patients during the peak of the pandemic. Orthop Res Rev. 2022;14:215-224.

Slobogean, G.P., Sprague, S., Bzovsky, S., Scott, T., Thabane, L., Heels-Ansdell, D., Viskontas, D., Zomar, M., Della Rocca, G.J., O’Hara, N.N., Bhandari, M., FAITH-2 Investigators. Fixation using Alternative Implants for the Treatment of Hip Fractures (FAITH-2): The Exploratory Health-Related Quality of Life and Patient-Reported Functional Outcomes of a Multi-Centre 2 × 2 Factorial Randomized Controlled Pilot Trial in Young Femoral Neck Fracture Patients. Injury. 2021 Feb 14;S0020-1383(21)0013-9.

O’Toole, R.V., Joshi, M., Carlini, A.R., Murray, C.K., Allen, L.E., Huang, Y., Scharfstein, D.O., O’Hara, N.N., Gary, J.L., Bosse, M.J., Castillo, R.C., METRC. Effect of Intrawound Vancomycin Powder in Operatively Treated High-risk Tibia Fractures: A Randomized Clinical Trial. JAMA Surgery. 2021 Mar 24;e207259.

Mascarenhas, D., Nasra, M., Tawfik, A., Ghazi, J., Ishmael, T., Therrien, P.J., Bowe, J.A., Tuason, D. Incisional negative pressure wound therapy does not affect deep surgical site infection rates in neuromuscular scoliosis surgery. Orthopedics. Published online April 3, 2023:1-6.

Mennona, S., Mascarenhas, D., Green, A., Monica, J.T., Ryan, J., Sagebien, C.A. Novel Method for Reduction of Distal Radius Fractures. Journal of Orthopaedic Trauma. 2021 Aug;35(Suppl 2):S20-S21.

Wise, B.T., Connelly, D., Rocca, M., Mascarenhas, D., Huang, Y., Maceroli, M.A., Joshi, M., Castillo, R.C., O’Toole, R.V. Does the recent Centers for Disease Control and Prevention definition of postoperative infection make sense for orthopaedic trauma? Submitted to Injury. 2021.

Forlizzi, J., Mascarenhas, D., Nasra, M.A., Sagebien, C.A. Novel Technique for Obtaining Neutral Entrance Angle During Suprapatellar Nailing of Tibial Shaft Fractures. Accepted to Journal of Surgical Orthopaedic Advances. 2021.

Gage, M.J., Mascarenhas, D., Marinos, D., Maceroli, M.A., Wise, B.T., Bhat, S.B., Potter, G.D., Slobogean, G.P., Sciadini, M.F., Lebrun, C.T., Nascone, J.W., Manson, T.T., O’Hara, N.N., O’Toole, R.V. Surgeons Cannot Predict Pilon Fracture Outcomes Based on Initial Radiographs. Orthopedics. 2020 Jan 1;43(1):e43-e46.

Stewart, C.C., O’Hara, N.N., Mascarenhas, D., Manson, T.T., Reahl, G.B., Connelly, D., Baker, M., Slobogean, G.P., O’Toole, R.V. Predictors of Symptomatic Implant Removal after Open Reduction and Internal Fixation of Tibial Plateau Fractures: A Retrospective Case-Control Study. 2020 Mar 19:1-7.

Dreizin, D., Liang, Y., Dent, J., Akhter, N., Mascarenhas, D., Scalea, T.M. Diagnostic Value of CT Contrast Extravasation for Major Arterial Injury After Pelvic Fracture: A Meta-Analysis of 3855 Patients. American Journal of Emergency Medicine. 2020 Nov;38(11):2335-2342.

Dr. Mascarenhas is currently available at:

– Cambridge

– Waltham