A.O.P.S. LogoAdvance Orthotic & Prosthetic Services, Inc.

Appointments & Billing:
Certified Orthotist/Prosthetist on call 24 hours a day.


Better Business Bureau Online - Accredited Member


David A. Johnson, C.O.

David has been in the Orthotic and Prosthetic industry since 1982. He attended the University of Maine and Northwestern University in Chicago, Illinois. He continued his education to become ABC (American Board for Certification in Orthotics and Prosthetics) certified in 1991. In 1994, he founded Advance Orthotic and Prosthetic Services, Inc. David and his company are members of the American Association of Orthotics and Prosthetics, American Orthotic and Prosthetic Association, Better Business Bureau, and locally the Chamber of Commerce,the Auburn Business Association, and participate in fund raising for the Maine Handicap Skiing. David has had training in many specialties and has a reputation of working well with children.


Sandra J. Marino, C.O., C.Ped.

Sandra is a Portland native who graduated from Westbrook College with an Associates Degree as a Medical Assistant. She continued this field for six years and then spurred on to orthopedic applications. She was Certified as a Pedorthist in 1990 assisting patients of all ages to proper footwear and Orthotic devices to alleviate pain with dynamic alignment principles. In 2003, she furthered her career as a Certified Orthotist. Sandy’s soft, caring personality and the ability to be a good listener is greatly appreciated by her patients. Educating and assisting patients with their diagnosis and helpful suggestions for their speedy recovery is something she prides herself in. She enjoys skiing, golfing, playing pool, and entertaining with friends.


Randall Shaw, BOCO, CFo, R.T., R

Randy has worked in the healthcare field for over 30 years. He graduated from Central Maine Medical Center School of Radiologic Technology in 1978. While working in the field of orthopedics he became certified as an Orthopedic Technologist in 1987. Randy has written many published articles for various orthopedic journals both nationally and internationally. Randy's special interests include caring for individuals with diabetic foot problems, and sports related injuries. His knowledge, patient communication skills, and easy going demeanor make him a very valuable asset to the AOPS staff.

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