physicians
Mathias Masem, M.D.
Dr. Mathias Masem is an orthopedic surgeon with more than 20 years of experience in surgery of the hand and upper extremity.
Masem earned his medical degree at the University of Minnesota. He completed general surgery training and a residency in orthopedic surgery at UCSF, then completed a hand surgery fellowship under esteemed hand surgeon Dr. Jack Tupper in Oakland. He spent the following two years as an orthopedic research physician in Switzerland at the University of Bern and the Laboratory for Experimental Surgery. He furthered his training in hand and upper extremity surgery and microsurgery as a clinical and research fellow at Massachusetts General Hospital and Harvard Medical School.
In addition to his private practice in Oakland he is an Assistant Clinical Professor of Orthopedic Surgery at the University of California, San Francisco. He works at the UCSF Orthopedic Institute training and teaching Orthopedic residents and fellows in techniques of upper extremity surgery, diagnosis and treatment. Dr. Masem is also a consultant in hand and upper extremity injuries for the University of California, Berkeley athletic teams and health services. Dr. Masem is past Chairman of the Department of Orthopedic Surgery at Alta Bates Summit Medical Center and past Chief of the Division of Hand Surgery at Alta Bates Summit Medical Center in Oakland, California.
Dr. Masem has authored numerous articles and given many lectures on upper extremity orthopedic surgery.
Gopal Lalchandani, MD
Dr. Gopal Lalchandani is an Assistant Professor in the Hand, Elbow and Upper Extremity Division of the UCSF Department of Orthopaedic Surgery.
Dr. Lalchandani treats both pediatric and adult patients. His clinical expertise includes acute upper limb trauma and post-traumatic reconstruction of complex injuries of the hand, wrist, forearm, and elbow. He also cares for a variety of upper extremity conditions including sports-related injuries, arthritis, carpal tunnel, tendon lacerations, and ligament injuries. His unique clinical interests also include pediatric congenital hand and complex injuries of the elbow.
Dr. Lalchandani completed his bachelor’s degree at the University of California, Berkeley, and earned his medical degree from Washington University School of Medicine in St. Louis. He then completed his internship and residency at the UCSF Department of Orthopaedic Surgery, at which he served as a chief resident during his final year. Most recently, Dr. Lalchandani completed the Harvard Hand and Upper Extremity Fellowship at the Brigham & Women’s, Boston Children’s, and Massachusetts General Hospitals.
An avid researcher, Dr. Lalchandani’s clinical research interests include wide-awake hand surgery, management of distal radius fractures, and the post-operative outcomes after upper extremity surgery – from flexor tendon repair to radial head arthroplasty. His work has been presented both nationally and internationally, and he has published multiple peer-reviewed manuscripts.
Fluent in conversational Spanish, Dr. Lalchandani grew up in Sacramento, CA. He enjoys spending time with his family, traveling, and skiing.
Dr. Lalchandani sees patients at the UCSF Orthopaedic Institute on the Mission Bay campus in San Francisco, UCSF Benioff Children’s Hospital in Oakland, and UCSF Benioff Children's Hospital Walnut Creek.
Kelly Maris-Weissburg, R.N., N.P.
Kelly Maris-Weissburg, R.N., N.P., is a highly skilled and compassionate healthcare professional dedicated to providing exceptional care and support to her patients. With a diverse background in nursing and advanced practice, Kelly has garnered extensive knowledge and expertise in the field of healthcare.
Kelly's journey in healthcare began with her pursuit of a Bachelor of Science in Nursing degree, which she obtained from the University of San Francisco. Motivated by her passion for patient care, she went on to acquire a Master of Science in Nursing with a specialization in Occupational Health Nurse Practitioner studies.
As a Registered Nurse, Kelly gained invaluable experience working in various clinical settings, including hospitals, clinics. Her dedication and commitment to patient well-being led her to pursue further specialization as a Nurse Practitioner. With her additional qualifications, she now holds the ability to diagnose and treat a wide range of illnesses, as well as provide comprehensive primary care services. She is also a Board Certified Nurse Practitioner and holds an additional Certified Occupational Health Nurse certification.
Kelly's approach to healthcare revolves around building strong relationships with her patients, listening attentively to their concerns, and developing personalized treatment plans tailored to their specific needs. She believes in a holistic approach to healthcare that encompasses both physical and emotional well-being.
Throughout her career, Kelly has demonstrated exceptional clinical skills, a deep understanding of evidence-based practice, and a genuine empathy for her patients. Her commitment to ongoing education and staying abreast of the latest advancements in healthcare ensures that her patients receive the highest quality of care.
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