Our firm is one of the few major Philadelphia locally owned and operated regional accounting firms. Based in Bala Cynwyd, Pen ... nsylvania, Isdaner & Company, LLC is an established dynamic firm of certified public accountants focused on providing clients with individual attention. As a Philadelphia CPA firm, we serve Philadelphia and the surrounding areas. We are more than just accountants. Our training is varied and includes the fields of law and finance. Some of our accountants are past entrepreneurs and chief financial officers. The industries we serve are: real estate including condominium and cooperative associations, long term care including nursing and personal care homes, independent living facilities, ambulatory care centers and continuing care retirement communities, professional service firms including law, engineering and architectural firms, medical and dental practices, family owned businesses, construction, manufacturing/distribution, retail and not for profit and government agencies. read more