Medical excellence and service for generations.
Choose the option that’s right for you.
Take the first step towards reducing orthopedic pain.
Living with joint and muscle pain can be difficult. Our team at the Orthopedic Institute at Mountainside Medical Center is committed to helping you live pain free, with orthopedic treatments that include:
- Comprehensive neck, back, and spine care
- Minimally invasive surgical treatments
- Orthopedic rehabilitation services delivered by a team of skilled physical therapists
- Other services like joint injection therapy, fracture care, and treatment for sports injuries
Bariatrics
At Mountainside Medical Center, we understand that weight loss surgery is a big decision that can change your life. That’s why our bariatric doctors are prepared to answer your questions and offer you support every step of the way on your weight loss journey. We offer weight loss seminars and a variety of surgical treatments, including gastric bypass and sleeve gastrectomy, for patients who are eligible for bariatric surgery.
Classes and Events
We offer a range of classes and events tailored to your health needs and interests. From General Wellness and Maternity Care to Behavioral Health, Children’s Care, and Community Events, there’s something for everyone. Our classes are designed to support and educate. Explore our Classes and Events and sign up today.
News & Events
The latest news and events from Mountainside Medical Center
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Hackensack Meridian Mountainside Medical Center Recognizes Julia Ilyin for Exceptional Leadership
Read more: Hackensack Meridian Mountainside Medical Center Recognizes Julia Ilyin for Exceptional LeadershipMONTCLAIR, New Jersey (May 11, 2026) – Mountainside Medical Center is proud to recognize Julia Ilyin, director of pharmacy, as our Leader of the Quarter for her exceptional leadership, clinical expertise, and meaningful impact on patient care and departmental excellence. For nearly a decade, Julia has played an instrumental role in shaping and advancing the…
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Women’s Health Month Spotlight: Compassionate, Preventive Care with Dr. Lina Kleyn
Read more: Women’s Health Month Spotlight: Compassionate, Preventive Care with Dr. Lina KleynWomen’s Health Month is an important reminder to prioritize wellness, prevention, and regular care at every stage of life. At Mountainside Medical Group, family medicine physician Lina Kleyn, D.O. is dedicated to helping women stay proactive about their health through comprehensive, compassionate care. Dr. Kleyn believes that strong relationships between patients and physicians are built…
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National Stroke Awareness Month: Know the Signs and Act FAST
Read more: National Stroke Awareness Month: Know the Signs and Act FASTMay is National Stroke Awareness Month, a time to raise awareness about stroke and the life‑saving importance of early action. At Hackensack Meridian Mountainside Medical Center, we want our community to recognize the warning signs and know when to act, because when it comes to stroke, every second counts. A stroke occurs when blood flow…
About Us
Patient focused, community oriented, conveniently located and equipped with technology that rivals the nation’s most prestigious healthcare systems, Mountainside Medical Center offers a comprehensive and growing array of services delivered by caring and highly skilled medical professionals. Mountainside Medical Center has been serving Montclair and its surrounding New Jersey communities since 1891. The physicians, nurses and volunteers who are a part of the Mountainside family are also your friends and neighbors. We’re your community, your hospital and your team, working hard on your behalf.
Join Our Team Today
At Mountainside Medical Center, exceptional associates provide exceptional care. It is not only our identity, it is also our expectation.