You can trust the OSMS medical professionals to give you the care you need with the respect and compassion you deserve. That’s because our doctors not only work at OSMS, they own it.
Abbey DeBruin, MD
Orthopedic Surgeon
Locations: Green Bay, Neenah
920-430-8113
Caring for patients of all ages, Dr. DeBruin sees and treats ACL tears, multi-ligament knee injuries, meniscus tears, patellofemoral instability, AC joint separations, shoulder instability, and more. Additionally, she has a special interest in treating sports-related injuries of the female athlete. Procedures Dr. DeBruin performs include tibial tubercle and femur/tibia osteotomies, rotator cuff repairs, arthroscopic labral repairs, partial and total knee replacements, anatomic and reverse shoulder replacements and the MISHA procedure, which is a joint sparing treatment option for mild to moderate knee arthritis.
Alejandro Garcia, MD
Non-Operative Orthopedic & Sports Medicine Physician
Locations: Neenah
920-430-8113
Dr. Garcia is board certified in sports medicine and treats the full spectrum of musculoskeletal pain including chronic conditions that affect our aging population such as arthritis, tendonitis, myalgia, neck and low back pain. He also treats acute injuries like sprains, strains, fractures and concussions.
Ben Zellner, MD
Orthopedic Hand to Shoulder Specialist
Locations: Green Bay, Marinette, Neenah
920-430-8113
Dr. Ben Zellner is a board-certified, fellowship-trained orthopedic hand-to-shoulder specialist. He treats most orthopedic conditions, although his expertise lies in hand, wrist, finger, elbow and shoulder care. Dr. Zellner treats carpal tunnel, trigger finger, finger fractures, tendon tears and elbow and shoulder injuries.
Brad Lyons, CRNA
Advanced Practice Practitioner
Locations: Green Bay
920-430-8113
As a Certified Registered Nurse Anesthetist, Brad finds it extremely satisfying to talk his patients through the anesthesia process to ease their minds.
Brandon J. Stradel, MD
Orthopedic Surgeon
Locations: Green Bay
920-430-8113
Dr. Stradel treats patients of all ages and specializes in a wide variety of conditions, with a focus on conditions affecting the shoulder and knee. This includes fracture care, rotator cuff tears, anatomic and reverse shoulder replacements, ACL injuries, meniscal surgery, cartilage restoration, robotic assisted knee replacements, and more.
Brian Law, MD
Foot & Ankle Specialist
Locations: Neenah, Oshkosh
920-430-8113
Dr. Law specializes in foot and ankle care to patients of all ages, treating conditions including, but not limited to, fractures, dislocations, arthritis, sports injuries, deformities such as bunions, hammertoes, flat foot, and cavus foot, tendon injuries, ligament injuries, tendinitis, Charcot neuroarthropathy, exertional compartment syndrome, and osteochondral lesions.
Bryan Royce, MD
Orthopedic Surgeon
Locations: Fond du Lac, Neenah, Oshkosh
920-430-8113
Dr. Bryan Royce is a board-certified orthopedic surgeon. Dr. Royce sees patients of all ages for orthopedic conditions or injuries related to the hip, knee, and shoulder, including those who have sports or work-related injuries. He also performs hip, knee, and shoulder joint replacement surgery and sees hand injuries as well.
Carissa Ranieri, APRN, PMGT-BC
Advanced Practice Practitioner
Locations: Neenah, Oshkosh
920-430-8113
As a Nurse Practitioner, Carissa enjoys helping patients achieve improved quality of life by helping to coordinate care. She wants her patients to feel heard and understood, leading them to feel at ease and comfortable to express their concerns.
Chris Robinson, CRNA
Advanced Practice Practitioner
Locations: Green Bay
920-430-8113
As a Certified Registered Nurse Anesthetist, Chris is dedicated to building trust with his patients so they may be at ease and know they are in good hands during their surgery. They can expect diligence and professionalism, while also counting on him to provide humor and fun.
Daniel Brunner, DO
Pain Management Physician
Locations: Neenah, Oshkosh
920-430-8113
Dr. Brunner is board-certified in both Pain Medicine and Anesthesiology. He treats chronic pain, neck and back pain, arthritis, post-laminectomy syndrome, neuropathic pain, and sciatica.





















